CAN COMMUNICATION SYSTEM

HOW TO INTERPRET COMMUNICATION DTCS (DTCS THAT START WITH U)

If a CAN communication error cannot be reproduced, determine the suspected malfunctioning part using the DTCs stored in ECUs that are connected to the CAN buses by following the procedure below.

Tech Tips

Communication DTCs (DTCs that start with U) indicate a communication error between the ECU that stores the DTC and the ECU that is indicated by the DTC.
1. If multiple ECUs store a communication DTC for a particular ECU, a communication stop of the ECU is suspected.
  
  *a Items to be Checked - -
  Note
  
  This DTC table is from another model, and is only used here to show an example of DTCs that are output when there is an open in a CAN branch line for the main body ECU. This table does not show DTCs applicable to this vehicle.
  
  Even though a DTC title may indicate a communication error with a specific ECU, the ECU name used in the DTC name on the GTS may differ depending on the ECU that stores the DTC. (Regarding output DTCs, refer to the DTC Table by ECU.)
  
  Click here
  Tech Tips
  
  As multiple ECUs indicate a communication stop with the main body ECU, the possibility of a communication stop of the main body ECU is high.
2. If almost all of the communication DTCs of an ECU are stored, a communication stop of the ECU is suspected.
  
  *a Items to be Checked - -
  
  Note
  
  This DTC table is from another model, and is only used here to show an example of DTCs that are output when there is an open in a CAN branch line for the main body ECU. This table does not show DTCs applicable to this vehicle.
  
  Tech Tips
  
  If almost all of the DTCs of the main body ECU are stored, the possibility of a communication stop of the main body ECU is high.
3. When a CAN communication error occurs, many DTCs are output. DTCs other than communication error DTCs (such as DTCs that start with C or B) and communication DTCs for the ABS system are important DTCs, however it may be easier to determine the malfunctioning part by examining the overall situation without considering these DTCs.

To help determine the part of the non-bus 2 that has a communication error, prioritize the communication stop DTCs stored in the gateway function equipped ECU.

*a	Items to be Checked	*b	ECM
*c	Gateway Function Equipped ECU	*d	Location of Malfunction
*e	Bus 2	*f	Non-bus 2

Note

This DTC table is from another model, and is only used here to show the ECUs connected to both a bus 2 and a non-bus 2. It shows DTCs output when there is an open in the main bus lines for the ECM on the non-bus 2. This table does not show DTCs applicable to this vehicle.

Tech Tips

As gateway function equipped ECUs (non-bus 2 monitor ECU) monitor signals from all ECUs that are connected to non-bus 2, gateway function equipped ECUs can detect ECUs with a communication stop more accurately.
When there is a communication stop for the gateway function equipped ECU (gateway), communication with ECUs connected to other buses such as the bus 2 stops. Therefore, communication DTCs for ECUs connected to other buses are also stored.

When any of the following malfunctions occurs, many DTCs are likely to be output from many ECUs. Because of this, it may be difficult to determine the probable malfunctioning part.
- Short between CAN lines (CANH and CANL)
- Short between a CAN line (CANH or CANL) and ground
- Short between a CAN line (CANH or CANL) and +B
- Open in a CAN branch line (CANH or CANL) of an ECU or sensor
- Open in a CAN main bus line (CANH or CANL) between 2 ECUs that have a terminating resistor

DTC COMBINATION TABLE (OPEN OR SHORT IN BUS 2, PAST COMMUNICATION ERROR) (for LHD)

If DTCs indicating a past communication error of an ECU or sensor connected to Bus 2 are output (but the bus is normal when performing the CAN bus check), the probable area that had a malfunction can be determined based on the following DTC combination table.

Tech Tips

Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.
If there is an open in a CAN branch line or a communication stop is currently occurring, the malfunctioning area can easily be determined by performing a CAN bus check using the GTS to determine which ECU or sensor that is connected to the branch line is not responding (the ECU or sensor has a background color of red).
If an open in a CAN main bus line, a short between the CAN bus lines (CANH and CANL) or a short to ground or +B in the CAN bus occurs, DTCs of almost all ECUs (or sensors) on the CAN bus may be output, or a message indicating a communication error may be displayed on the GTS screen. In this case, check the resistance of the CAN bus (steps 10 to 21) first.

Click here
If an open occurs in just one of the lines of a CAN bus line(s), DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
○: DTC is output.
-: DTC is not output.
If an open occurs in just one of the lines of a CAN bus line, DTCs which are not related to malfunctioning parts may be output.
*1: DTC U0073 may be stored when communication is lost.
*2: DTC U1000 may be stored when communication is lost.
*3: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-			Trouble Mode (Open in CAN branch line(s))
-			Bus 2
Output ECU		Output DTC	Center Airbag Sensor Communication Stop Mode Click here	Air Conditioning Amplifier Communication Stop Mode Click here	Main Body ECU Communication Stop Mode Click here	Central Gateway ECU Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	U0125	○	-	-	-
		U0126	○	-	-	-
		U0129	○	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	○	-	-
		U0131	-	○	-	-
		U0142	-	○	○	-
		U0151	○	○	-	-
		U0155	-	○	-	-
		U0163	-	○	-	○
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	○	-
		U0101	-	-	○	-
		U0120	-	-	○	-
		U0129	-	-	○	-
		U0151	○	-	○	-
		U0155	-	-	○	-
		U023A	-	-	○	○
		U0327	-	-	○	-
		U1117	-	-	○	○
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-	○
	ECM (for 2GR-FKS)	U012287	-	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-	-
		U110387	-	-	-	-
		U110487	-	-	-	○
	Engine Stop and Start ECU	U0100	-	-	-	-
		U0104	-	-	-	○
		U0121	-	-	-	-
		U0123	-	-	-	-
		U0126	-	-	-	-
		U0131	-	-	-	-
		U0132	-	-	-	○
		U0140	-	-	○	○
		U0151	○	-	-	-
		U0164	-	○	-	-
	Power Steering ECU Assembly	U0100	-	-	-	-
		U0129	-	-	-	-
		U0132	-	-	-	-
		U1103	-	-	-	-
Bus 2	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-	-
		U0142	-	-	○	-
		U0155	-	-	-	-
		U1103	-	-	-	-
		U1117	-	-	-	○
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-	-
		U0140	-	-	○	-
		U0155	-	-	-	-
		U1103	-	-	-	-
		U1117	-	-	-	○
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-	-
	Combination Meter Assembly	U0100	-	-	-	-
		U0129	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	○	-
		U0151	○	-	-	-
		U0163	-	-	-	○
		U0182	-	-	○	-
		U023A	-	-	-	○
		U1104	-	-	-	○
	Stereo Component Equalizer Assembly	U0100	-	-	-	-
		U0122	-	-	-	-
		U0142	-	-	○	-
	Steering Sensor	-	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-	-
		U0124	-	-	-	-
		U0126	-	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-	○
		U0126	-	-	-	○
		U0129	-	-	-	○
		U0131	-	-	-	○
		U0140	-	-	○	○
		U0155	-	-	-	○
		U0164	-	○	-	○
		U0198	-	-	-	-
		U0233	-	-	-	-
		U1110	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver except G-BOOK)	U0100	-	-	-	○
Bus 3	Telematics Transceiver (w/ Telematics Transceiver for G-BOOK)	U0140	-	-	○	○
		U0155	-	-	-	○
		U0198	-	-	-	-
	Option Connector (Bus Buffer ECU)	-	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-	○
		U0125	-	-	-	○
		U0126	-	-	-	○
		U0129	-	-	-	○
		U0142	-	-	○	○
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-	○
	Clearance Warning ECU Assembly	U0155	-	-	-	○
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-	○
		U0125	-	-	-	○
		U0126	-	-	-	○
		U0129	-	-	-	○
		U0235	-	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-	○
		U0125	-	-	-	○
		U0126	-	-	-	○
		U0129	-	-	-	○
		U0235	-	-	-	-
		U023A	-	-	-	-
	Forward Recognition Camera	U0100	-	-	-	○
		U0101	-	-	-	○
		U0123	-	-	-	○
		U0126	-	-	-	○
		U0129	-	-	-	○
		U0131	-	-	-	○
		U0142	-	-	○	○
		U0155	-	-	-	○
		U0235	-	-	-	-
		U1104	-	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-	-
	Absorber Control ECU	U0100	-	-	-	○
		U0101	-	-	-	○
		U0122	-	-	-	○
		U0124	-	-	-	○
		U0126	-	-	-	○
		U1103	-	-	-	○
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	○	-
		U0101	-	-	○	-
		U0126	-	-	○	-
		U0129	-	-	○	-
		U0142	-	-	-	-
		U0155	-	-	○	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	○	-
		U0199	-	-	-	-
		U0200	-	-	-	-
		U0208	-	-	-	-
		U0265	-	-	-	-
		U1002	-	-	○	-
		U1115	-	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	○	-
		U0126	-	-	○	-
		U0129	-	-	○	-
		U0131	-	-	○	-
		U0140	-	-	-	-
		U0163	-	-	○	○
		U0233	-	-	○	○
		U1110	-	-	○	○
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-	-
	Front Power Seat Switch LH	-	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-	-

-			Trouble Mode (Open in CAN branch line(s))
-			Bus 2
Output ECU		Output DTC	Engine Stop and Start ECU Communication Stop Mode Click here	Power Steering ECU Communication Stop Mode Click here	Certification ECU Communication Stop Mode Click here	ASC ECU Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-	-
		U0131	-	○	-	-
		U0142	-	-	-	-
		U0151	-	-	-	-
		U0155	-	-	-	-
		U0163	-	-	-	-
Bus 2	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-	-
		U0101	-	-	-	-
		U0120	-	-	○	-
		U0129	-	-	-	-
		U0151	-	-	-	-
		U0155	-	-	-	-
		U023A	-	-	-	-
		U0327	-	-	○	-
		U1117	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-	-
		U110387	○	-	-	-
		U110487	-	-	-	-
	Engine Stop and Start ECU	U0100	○	-	-	-
		U0104	○	-	-	-
		U0121	○	-	-	-
		U0123	○	-	-	-
		U0126	○	-	-	-
		U0131	○	○	-	-
		U0132	○	-	-	-
		U0140	○	-	-	-
		U0151	○	-	-	-
		U0164	○	-	-	-
	Power Steering ECU Assembly	U0100	-	○	-	-
		U0129	-	○	-	-
		U0132	-	○	-	-
		U1103	○	○	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	○	-
		U0142	-	-	○	-
		U0155	-	-	○	-
		U1103	○	-	○	-
		U1117	-	-	○	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	○	-
		U0140	-	-	○	-
		U0155	-	-	○	-
		U1103	○	-	○	-
		U1117	-	-	○	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	○	-
	Combination Meter Assembly	U0100	-	-	-	-
		U0129	-	-	-	-
		U0131	-	○	-	-
		U0142	-	-	-	-
		U0151	-	-	-	-
		U0163	-	-	-	-
		U0182	-	-	-	-
		U023A	-	-	-	-
		U1104	-	-	-	-
Bus 2	Stereo Component Equalizer Assembly	U0100	-	-	-	○
		U0122	-	-	-	○
		U0142	-	-	-	○
	Steering Sensor	-	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-	-
		U0124	-	-	-	-
		U0126	-	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0131	-	○	-	-
		U0140	-	-	-	-
		U0155	-	-	-	-
		U0164	-	-	-	-
		U0198	-	-	-	-
		U0233	-	-	-	-
		U1110	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver except G-BOOK)	U0100	-	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver for G-BOOK)	U0140	-	-	-	-
		U0155	-	-	-	-
		U0198	-	-	-	-
	Option Connector (Bus Buffer ECU)	-	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0142	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0235	-	-	-	-
Bus 5	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0235	-	-	-	-
		U023A	-	-	-	-
	Forward Recognition Camera	U0100	-	-	-	-
		U0101	-	-	-	-
		U0123	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0131	-	○	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
		U0235	-	-	-	-
		U1104	-	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-	-
	Absorber Control ECU	U0100	-	-	-	-
		U0101	-	-	-	-
		U0122	-	-	-	-
		U0124	-	-	-	-
		U0126	-	-	-	-
		U1103	○	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-	-
		U0101	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-	-
		U0199	-	-	-	-
		U0200	-	-	-	-
		U0208	-	-	-	-
		U0265	-	-	-	-
		U1002	-	-	-	-
		U1115	-	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0131	-	○	-	-
		U0140	-	-	-	-
		U0163	-	-	-	-
		U0233	-	-	-	-
		U1110	-	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-	-
Sub Bus 1	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-	-
	Front Power Seat Switch LH	-	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-	-

-			Trouble Mode (Open in CAN branch line(s))
-			Bus 2
Output ECU		Output DTC	Steering Angle Sensor Communication Stop Mode Click here	Brake Actuator (Skid Control ECU) Communication Stop Mode Click here	Yaw Rate Sensor Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	U0125	-	-	○
		U0126	○	-	-
		U0129	-	○	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	○	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1117	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-
	ECM (for 2GR-FKS)	U012287	-	○	-
	ECM (for 8AR-FTS)	U012287	-	○	-
		U110387	-	-	-
		U110487	-	-	-
Bus 2	Engine Stop and Start ECU	U0100	-	-	-
		U0104	-	-	-
		U0121	-	○	-
		U0123	-	-	○
		U0126	○	-	-
		U0131	-	-	-
		U0132	-	-	-
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	○	-
		U0132	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
		U1117	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
		U1117	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	○	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	-	-	-
		U023A	-	-	-
		U1104	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	○	-
		U0142	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	○	-
		U0124	-	○	○
		U0126	○	○	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-
		U0126	○	-	-
		U0129	-	○	-
		U0131	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U0198	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver except G-BOOK)	U0100	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver for G-BOOK)	U0140	-	-	-
		U0155	-	-	-
		U0198	-	-	-
	Option Connector (Bus Buffer ECU)	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	○
		U0126	○	-	-
		U0129	-	○	-
		U0142	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-
		U0125	-	-	○
		U0126	○	-	-
		U0129	-	○	-
		U0235	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	○
		U0126	○	-	-
		U0129	-	○	-
		U0235	-	-	-
		U023A	-	-	-
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	○
		U0126	○	-	○
		U0129	-	○	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
Bus 5	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0122	-	○	-
		U0124	-	-	○
		U0126	○	-	-
		U1103	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-
		U0101	-	-	-
		U0126	○	-	-
		U0129	-	○	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-
		U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-
		U0126	○	-	-
		U0129	-	○	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Front Power Seat Switch LH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

-			Trouble Mode (Open in CAN main bus line(s))
-			Bus 2
Output ECU		Output DTC	Combination Meter ECU Communication Stop Mode Click here	No. 1 CAN J/C to No. 2 CAN J/C	ECM Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	○	○
		U0131	-	-	-
		U0142	-	○	-
		U0151	-	○	-
		U0155	○	-	-
		U0163	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	○
		U0101	-	-	○
		U0120	-	○	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	○	○	-
		U023A	-	○	-
		U0327	-	○	-
		U1117	-	○	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	○	○
	ECM (for 2GR-FKS)	U012287	-	-	○
	ECM (for 8AR-FTS)	U012287	-	-	○
		U110387	-	○	○
		U110487	-	○	○
	Engine Stop and Start ECU	U0100	-	○	○
		U0104	-	-	-
		U0121	-	○	-
		U0123	-	○	-
		U0126	-	○	-
		U0131	-	-	-
		U0132	-	-	-
		U0140	-	○	-
		U0151	-	○	-
		U0164	-	-	-
	Power Steering ECU Assembly	U0100	-	○	○
		U0129	-	○	-
		U0132	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	○	○
		U0142	-	○	-
		U0155	○	-	-
		U1103	-	-	-
		U1117	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	○	○
		U0140	-	○	-
		U0155	○	-	-
		U1103	-	-	-
		U1117	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	○	○
Bus 2	Combination Meter Assembly	U0100	○	○	○
		U0129	○	○	-
		U0131	○	-	-
		U0142	○	○	-
		U0151	○	○	-
		U0163	○	-	-
		U0182	○	○	-
		U023A	○	-	-
		U1104	○	-	-
	Stereo Component Equalizer Assembly	U0100	-	○	○
		U0122	-	○	-
		U0142	-	○	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	○
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	○	○
		U0126	-	○	-
		U0129	-	○	-
		U0131	-	-	-
		U0140	-	○	-
		U0155	○	-	-
		U0164	-	-	-
		U0198	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver except G-BOOK)	U0100	-	○	○
	Telematics Transceiver (w/ Telematics Transceiver for G-BOOK)	U0140	-	○	-
		U0155	○	-	-
		U0198	-	-	-
	Option Connector (Bus Buffer ECU)	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	○	○
		U0125	-	○	-
		U0126	-	○	-
		U0129	-	○	-
		U0142	-	○	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	○	○
	Clearance Warning ECU Assembly	U0155	○	-	-
Bus 5	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	○	○
		U0125	-	○	-
		U0126	-	○	-
		U0129	-	○	-
		U0235	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	○	○
		U0125	-	○	-
		U0126	-	○	-
		U0129	-	○	-
		U0235	-	-	-
		U023A	-	-	-
	Forward Recognition Camera	U0100	-	○	○
		U0101	-	○	○
		U0123	-	○	-
		U0126	-	○	-
		U0129	-	○	-
		U0131	-	-	-
		U0142	-	○	-
		U0155	○	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	-	○	○
		U0101	-	○	○
		U0122	-	○	-
		U0124	-	○	○
		U0126	○	○	-
		U1103	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	○
		U0101	-	-	○
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
		U0155	○	○	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-
		U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	○
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	○	-
		U0140	-	-	-
		U0163	-	○	-
		U0233	-	○	-
		U1110	-	○	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
Sub Bus 1	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Front Power Seat Switch LH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

-			Trouble Mode (CAN bus lines short circuit or short to GND)
-			Bus 2
Output ECU		Output DTC	CANH to CANL	CANH Short to Ground	CANL Short to Ground
Bus 2	Airbag Sensor Assembly	U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
	Air Conditioning Amplifier Assembly	U0100	○	○	○
		U0131	○	○	○
		U0142	○	○	○
		U0151	○	○	○
		U0155	○	○	○
		U0163	○	○	○
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	○	○	○
		U0101	○	○	○
		U0120	○	○	○
		U0129	○	○	○
		U0151	○	○	○
		U0155	○	○	○
		U023A	○	○	○
		U0327	○	○	○
		U1117	○	○	○
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	○	○	○
	ECM (for 2GR-FKS)	U012287	○	○	○
	ECM (for 8AR-FTS)	U012287	○	○	○
		U110387	○	○	○
		U110487	○	○	○
	Engine Stop and Start ECU	U0100	○	○	○
		U0104	○	○	○
		U0121	○	○	○
		U0123	○	○	○
		U0126	○	○	○
		U0131	○	○	○
		U0132	○	○	○
		U0140	○	○	○
		U0151	○	○	○
		U0164	○	○	○
	Power Steering ECU Assembly	U0100	○	○	○
		U0129	○	○	○
		U0132	○	○	○
		U1103	○	○	○
Bus 2	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	○	○	○
		U0142	○	○	○
		U0155	○	○	○
		U1103	○	○	○
		U1117	○	○	○
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	○	○	○
		U0140	○	○	○
		U0155	○	○	○
		U1103	○	○	○
		U1117	○	○	○
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	○	○	○
	Combination Meter Assembly	U0100	○	○	○
		U0129	○	○	○
		U0131	○	○	○
		U0142	○	○	○
		U0151	○	○	○
		U0163	○	○	○
		U0182	○	○	○
		U023A	○	○	○
		U1104	○	○	○
	Stereo Component Equalizer Assembly	U0100	○	○	○
		U0122	○	○	○
		U0142	○	○	○
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	○	○	○
		U0124	○	○	○
		U0126	○	○	○
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0131	○	○	○
		U0140	○	○	○
		U0155	○	○	○
		U0164	○	○	○
		U0198	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver except G-BOOK)	U0100	○	○	○
	Telematics Transceiver (w/ Telematics Transceiver for G-BOOK)	U0140	○	○	○
		U0155	○	○	○
		U0198	-	-	-
Bus 3	Option Connector (Bus Buffer ECU)	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0142	○	○	○
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	○	○	○
	Clearance Warning ECU Assembly	U0155	○	○	○
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0235	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0235	-	-	-
		U023A	-	-	-
	Forward Recognition Camera	U0100	○	○	○
		U0101	○	○	○
		U0123	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0131	○	○	○
		U0142	○	○	○
		U0155	○	○	○
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	○	○	○
		U0101	○	○	○
		U0122	○	○	○
		U0124	○	○	○
		U0126	○	○	○
		U1103	○	○	○
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	○	○	○
		U0101	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0142	-	-	-
		U0155	○	○	○
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	○	○	○
		U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	-
Sub Bus 1	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0131	○	○	○
		U0140	-	-	-
		U0163	○	○	○
		U0233	○	○	○
		U1110	○	○	○
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Front Power Seat Switch LH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

DTC COMBINATION TABLE (OPEN OR SHORT IN BUS 3, PAST COMMUNICATION ERROR) (for LHD)

If DTCs indicating a past communication error of an ECU or sensor connected to Bus 3 are output (but the bus is normal when performing the CAN bus check), the probable area that had a malfunction can be determined based on the following DTC combination table.

Tech Tips

Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.
If there is an open in a CAN branch line or a communication stop is currently occurring, the malfunctioning area can easily be determined by performing a CAN bus check using the GTS to determine which ECU or sensor that is connected to the branch line is not responding (the ECU or sensor has a background color of red).
If an open in a CAN main bus line, a short between the CAN bus lines (CANH and CANL) or a short to ground or +B in the CAN bus occurs, DTCs of almost all ECUs (or sensors) on the CAN bus may be output, or a message indicating a communication error may be displayed on the GTS screen. In this case, check the resistance of the CAN bus (steps 10 to 21) first.

Click here
If an open occurs in just one of the lines of a CAN bus line(s), DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
○: DTC is output.
-: DTC is not output.
If an open occurs in just one of the lines of a CAN bus line, DTCs which are not related to malfunctioning parts may be output.
*1: DTC U0073 may be stored when communication is lost.
*2: DTC U1000 may be stored when communication is lost.
*3: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-			Trouble Mode (Open in CAN branch line(s))
-			Bus 3
Output ECU		Output DTC	Radio Receiver Assembly Communication Stop Mode Click here	DCM Communication Stop Mode Click here	Bus Buffer ECU Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	○	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1117	-	-	○
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-
		U110387	-	-	-
		U110487	-	-	-
Bus 2	Engine Stop and Start ECU	U0100	-	-	-
		U0104	-	-	-
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	-	-
		U0132	-	-	-
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	-	-
		U0132	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
		U1117	-	-	○
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
		U1117	-	-	○
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	○	-	-
		U0182	-	-	-
		U023A	-	-	-
		U1104	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	-	-
		U0142	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U0131	○	-	-
		U0140	○	-	-
		U0155	○	-	-
		U0164	○	-	-
		U0198	○	○	-
		U0233	○	-	-
		U1110	○	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver except G-BOOK)	U0100	-	○	-
	Telematics Transceiver (w/ Telematics Transceiver for G-BOOK)	U0140	-	○	-
		U0155	-	○	-
		U0198	○	○	-
	Option Connector (Bus Buffer ECU)	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
		U023A	-	-	-
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
Bus 5	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0122	-	-	-
		U0124	-	-	-
		U0126	-	-	-
		U1103	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-
		U0101	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-
		U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	○	-	-
		U0233	-	-	-
		U1110	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Front Power Seat Switch LH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

-			Trouble Mode (Open in CAN main bus line(s))
-			Bus 3
Output ECU		Output DTC	Central Gateway ECU (Network Gateway ECU) (CA3H and CA3L Terminal)	Central Gateway ECU (Network Gateway ECU) (CAYH and CAYL Terminal)
Bus 2	Airbag Sensor Assembly	U0125	-	-
		U0126	-	-
		U0129	-	-
Bus 2	Air Conditioning Amplifier Assembly	U0100	-	-
		U0131	-	-
		U0142	-	-
		U0151	-	-
		U0155	-	-
		U0163	○	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-
		U0101	-	-
		U0120	-	-
		U0129	-	-
		U0151	-	-
		U0155	-	-
		U023A	-	-
		U0327	-	-
		U1117	○	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-
	ECM (for 2GR-FKS)	U012287	-	-
	ECM (for 8AR-FTS)	U012287	-	-
		U110387	-	-
		U110487	-	-
	Engine Stop and Start ECU	U0100	-	-
		U0104	-	-
		U0121	-	-
		U0123	-	-
		U0126	-	-
		U0131	-	-
		U0132	-	-
		U0140	-	-
		U0151	-	-
		U0164	-	-
	Power Steering ECU Assembly	U0100	-	-
		U0129	-	-
		U0132	-	-
		U1103	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-
		U0142	-	-
		U0155	-	-
		U1103	-	-
		U1117	○	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-
		U0140	-	-
		U0155	-	-
		U1103	-	-
		U1117	○	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-
Bus 2	Combination Meter Assembly	U0100	-	-
		U0129	-	-
		U0131	-	-
		U0142	-	-
		U0151	-	-
		U0163	○	-
		U0182	-	-
		U023A	-	-
		U1104	-	-
	Stereo Component Equalizer Assembly	U0100	-	-
		U0122	-	-
		U0142	-	-
	Steering Sensor	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-
		U0124	-	-
		U0126	-	-
	Yaw Rate Sensor Assembly	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	○	-
		U0126	○	-
		U0129	○	-
		U0131	○	-
		U0140	○	-
		U0155	○	-
		U0164	○	-
		U0198	-	-
		U0233	○	-
		U1110	○	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver except G-BOOK)	U0100	○	-
	Telematics Transceiver (w/ Telematics Transceiver for G-BOOK)	U0140	○	-
		U0155	○	-
		U0198	-	-
	Option Connector (Bus Buffer ECU)	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-
		U0125	-	-
		U0126	-	-
		U0129	-	-
		U0142	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-
	Clearance Warning ECU Assembly	U0155	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-
		U0125	-	-
		U0126	-	-
		U0129	-	-
		U0235	-	-
Bus 5	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-
		U0125	-	-
		U0126	-	-
		U0129	-	-
		U0235	-	-
		U023A	-	-
	Forward Recognition Camera	U0100	-	-
		U0101	-	-
		U0123	-	-
		U0126	-	-
		U0129	-	-
		U0131	-	-
		U0142	-	-
		U0155	-	-
		U0235	-	-
		U1104	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-
	Absorber Control ECU	U0100	-	-
		U0101	-	-
		U0122	-	-
		U0124	-	-
		U0126	-	-
		U1103	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-
		U0101	-	-
		U0126	-	-
		U0129	-	-
		U0142	-	-
		U0155	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-
		U0199	-	-
		U0200	-	-
		U0208	-	-
		U0265	-	-
		U1002	-	-
		U1115	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-
		U0126	-	-
		U0129	-	-
		U0131	-	-
		U0140	-	-
		U0163	○	-
		U0233	-	-
		U1110	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-
	Front Power Seat Switch LH	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-

-			Trouble Mode (CAN bus lines short circuit or short to GND)
-			Bus 3
Output ECU		Output DTC	CANH to CANL	CANH Short to Ground	CANL Short to Ground
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	○	○	○
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1117	○	○	○
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-
		U110387	-	-	-
		U110487	-	-	-
	Engine Stop and Start ECU	U0100	-	-	-
		U0104	-	-	-
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	-	-
		U0132	-	-	-
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	-	-
		U0132	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
		U1117	○	○	○
Bus 2	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
		U1117	○	○	○
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	○	○	○
		U0182	-	-	-
		U023A	-	-	-
		U1104	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	-	-
		U0142	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0131	○	○	○
		U0140	○	○	○
		U0155	○	○	○
		U0164	○	○	○
		U0198	○	○	○
		U0233	○	○	○
		U1110	○	○	○
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver except G-BOOK)	U0100	○	○	○
	Telematics Transceiver (w/ Telematics Transceiver for G-BOOK)	U0140	○	○	○
		U0155	○	○	○
		U0198	○	○	○
	Option Connector (Bus Buffer ECU)	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
		U023A	-	-	-
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0122	-	-	-
		U0124	-	-	-
		U0126	-	-	-
		U1103	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-
		U0101	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-
		U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	-
Sub Bus 1	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	○	○	○
		U0233	-	-	-
		U1110	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Front Power Seat Switch LH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

DTC COMBINATION TABLE (OPEN OR SHORT IN BUS 5, PAST COMMUNICATION ERROR) (for LHD)

If DTCs indicating a past communication error of an ECU or sensor connected to Bus 5 are output (but the bus is normal when performing the CAN bus check), the probable area that had a malfunction can be determined based on the following DTC combination table.

Tech Tips

Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.
If there is an open in a CAN branch line or a communication stop is currently occurring, the malfunctioning area can easily be determined by performing a CAN bus check using the GTS to determine which ECU or sensor that is connected to the branch line is not responding (the ECU or sensor has a background color of red).
If an open in a CAN main bus line, a short between the CAN bus lines (CANH and CANL) or a short to ground or +B in the CAN bus occurs, DTCs of almost all ECUs (or sensors) on the CAN bus may be output, or a message indicating a communication error may be displayed on the GTS screen. In this case, check the resistance of the CAN bus (steps 10 to 21) first.

Click here
If an open occurs in just one of the lines of a CAN bus line(s), DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
○: DTC is output.
-: DTC is not output.
If an open occurs in just one of the lines of a CAN bus line, DTCs which are not related to malfunctioning parts may be output.
*1: DTC U0073 may be stored when communication is lost.
*2: DTC U1000 may be stored when communication is lost.
*3: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-			Trouble Mode (Open in CAN branch line(s))
-			Bus 5
Output ECU		Output DTC	Blind Spot Monitor Sensor Communication Stop Mode Click here	Clearance Warning ECU Communication Stop Mode Click here	Driving Support ECU Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1117	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	○
	ECM (for 2GR-FKS)	U012287	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-
		U110387	-	-	-
		U110487	-	-	○
Bus 2	Engine Stop and Start ECU	U0100	-	-	-
		U0104	-	-	○
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	-	-
		U0132	-	-	-
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	-	-
		U0132	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
		U1117	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
		U1117	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	-	-	-
		U023A	-	-	-
		U1104	-	-	○
	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	-	-
		U0142	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U0198	-	-	-
		U0233	○	-	-
		U1110	-	○	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver except G-BOOK)	U0100	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver for G-BOOK)	U0140	-	-	-
		U0155	-	-	-
		U0198	-	-	-
	Option Connector (Bus Buffer ECU)	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	○	-	-
		U0125	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U0142	○	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	○	-
	Clearance Warning ECU Assembly	U0155	-	○	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	○
		U0125	-	-	○
		U0126	-	-	○
		U0129	-	-	○
		U0235	-	-	○
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	○
		U0125	-	-	○
		U0126	-	-	○
		U0129	-	-	○
		U0235	-	-	○
		U023A	-	-	○
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	○
Bus 5	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0122	-	-	-
		U0124	-	-	-
		U0126	-	-	-
		U1103	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-
		U0101	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-
		U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	○	-	-
		U1110	-	○	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Front Power Seat Switch LH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

-			Trouble Mode (Open in CAN branch line(s))
-			Bus 5
Output ECU		Output DTC	Front Camera Module Communication Stop Mode Click here	Millimeter Wave Radar Sensor Communication Stop Mode Click here	Suspension Control ECU Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	○	-	-
		U0327	-	-	-
		U1117	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-
		U110387	-	-	-
		U110487	-	-	-
	Engine Stop and Start ECU	U0100	-	-	-
		U0104	-	-	-
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	-	-
		U0132	-	-	○
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	-	-
		U0132	-	-	○
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
		U1117	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
		U1117	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
Bus 2	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	-	-	-
		U023A	○	-	-
		U1104	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	-	-
		U0142	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U0198	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver except G-BOOK)	U0100	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver for G-BOOK)	U0140	-	-	-
		U0155	-	-	-
		U0198	-	-	-
	Option Connector (Bus Buffer ECU)	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
Bus 5	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	○	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	○	-
		U023A	○	-	-
	Forward Recognition Camera	U0100	○	-	-
		U0101	○	-	-
		U0123	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U0131	○	-	-
		U0142	○	-	-
		U0155	○	-	-
		U0235	○	○	-
		U1104	○	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	-	-	○
		U0101	-	-	○
		U0122	-	-	○
		U0124	-	-	○
		U0126	-	-	○
		U1103	-	-	○
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-
		U0101	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-
		U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
Sub Bus 1	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Front Power Seat Switch LH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

-			Trouble Mode (Open in CAN main bus line(s))
-			Bus 5
Output ECU		Output DTC	Central Gateway ECU Communication Stop Mode Click here	No. 9 CAN J/C to No. 10 CAN J/C	No. 10 CAN J/C to No. 13 CAN J/C	No. 13 CAN J/C to No.2 CAN Junction Terminal
Bus 2	Airbag Sensor Assembly	U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	-	-
		U0151	-	-	-	-
		U0155	-	-	-	-
		U0163	-	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-	-
		U0101	-	-	-	-
		U0120	-	-	-	-
		U0129	-	-	-	-
		U0151	-	-	-	-
		U0155	-	-	-	-
		U023A	○	○	-	-
		U0327	-	-	-	-
		U1117	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	ECM (for 2GR-FKS)	U010487	○	○	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-	-
		U110387	-	-	-	-
		U110487	○	○	-	-
Bus 2	Engine Stop and Start ECU	U0100	-	-	-	-
		U0104	○	○	-	-
		U0121	-	-	-	-
		U0123	-	-	-	-
		U0126	-	-	-	-
		U0131	-	-	-	-
		U0132	○	-	-	-
		U0140	-	-	-	-
		U0151	-	-	-	-
		U0164	-	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-	-
		U0129	-	-	-	-
		U0132	○	-	-	-
		U1103	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
		U1103	-	-	-	-
		U1117	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-	-
		U0140	-	-	-	-
		U0155	-	-	-	-
		U1103	-	-	-	-
		U1117	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-	-
	Combination Meter Assembly	U0100	-	-	-	-
		U0129	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	-	-
		U0151	-	-	-	-
		U0163	-	-	-	-
		U0182	-	-	-	-
		U023A	○	○	-	-
		U1104	○	○	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-	-
		U0122	-	-	-	-
		U0142	-	-	-	-
	Steering Sensor	-	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-	-
		U0124	-	-	-	-
		U0126	-	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0131	-	-	-	-
		U0140	-	-	-	-
		U0155	-	-	-	-
		U0164	-	-	-	-
		U0198	-	-	-	-
		U0233	○	○	○	-
		U1110	○	○	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver except G-BOOK)	U0100	-	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver for G-BOOK)	U0140	-	-	-	-
		U0155	-	-	-	-
		U0198	-	-	-	-
	Option Connector (Bus Buffer ECU)	-	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	○	○	○	-
		U0125	○	○	○	-
		U0126	○	○	○	-
		U0129	○	○	○	-
		U0142	○	○	○	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	Clearance Warning ECU Assembly	U0101	○	○	-	-
	Clearance Warning ECU Assembly	U0155	○	○	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	○	○	-	-
		U0125	○	○	-	-
		U0126	○	○	-	-
		U0129	○	○	-	-
		U0235	-	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	○	○	-	-
		U0125	○	○	-	-
		U0126	○	○	-	-
		U0129	○	○	-	-
		U0235	-	-	-	-
		U023A	-	-	-	-
Bus 5	Forward Recognition Camera	U0100	○	○	-	-
		U0101	○	○	-	-
		U0123	○	○	-	-
		U0126	○	○	-	-
		U0129	○	○	-	-
		U0131	○	○	-	-
		U0142	○	○	-	-
		U0155	○	○	-	-
		U0235	-	-	-	-
		U1104	-	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-	-
	Absorber Control ECU	U0100	○	-	-	-
		U0101	○	-	-	-
		U0122	○	-	-	-
		U0124	○	-	-	-
		U0126	○	-	-	-
		U1103	○	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-	-
		U0101	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-	-
		U0199	-	-	-	-
		U0200	-	-	-	-
		U0208	-	-	-	-
		U0265	-	-	-	-
		U1002	-	-	-	-
		U1115	-	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0131	-	-	-	-
		U0140	-	-	-	-
		U0163	-	-	-	-
		U0233	○	○	○	-
		U1110	○	○	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-	-
	Front Power Seat Switch LH	-	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-	-

-			Trouble Mode (CAN bus lines short circuit or short to GND)
-			Bus 5
Output ECU		Output DTC	CANH to CANL	CANH Short to Ground	CANL Short to Ground
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	○	○	○
		U0327	-	-	-
		U1117	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	○	○	○
	ECM (for 2GR-FKS)	U012287	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-
		U110387	-	-	-
		U110487	○	○	○
	Engine Stop and Start ECU	U0100	-	-	-
		U0104	○	○	○
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	-	-
		U0132	○	○	○
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	-	-
		U0132	○	○	○
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
		U1117	-	-	-
Bus 2	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
		U1117	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	-	-	-
		U023A	○	○	○
		U1104	○	○	○
	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	-	-
		U0142	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U0198	-	-	-
		U0233	○	○	○
		U1110	○	○	○
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver except G-BOOK)	U0100	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver for G-BOOK)	U0140	-	-	-
		U0155	-	-	-
		U0198	-	-	-
	Option Connector (Bus Buffer ECU)	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0142	○	○	○
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	○	○	○
	Clearance Warning ECU Assembly	U0155	○	○	○
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0235	○	○	○
	Driving Support ECU Assembly (Pre-collision System)	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0235	○	○	○
		U023A	○	○	○
	Forward Recognition Camera	U0100	○	○	○
		U0101	○	○	○
		U0123	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0131	○	○	○
		U0142	○	○	○
		U0155	○	○	○
		U0235	○	○	○
		U1104	○	○	○
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	○	○	○
		U0101	○	○	○
		U0122	○	○	○
		U0124	○	○	○
		U0126	○	○	○
		U1103	○	○	○
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-
		U0101	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-
		U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	-
Sub Bus 1	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	○	○	○
		U1110	○	○	○
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Front Power Seat Switch LH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

DTC COMBINATION TABLE (OPEN OR SHORT IN SUB BUS 1, PAST COMMUNICATION ERROR) (for LHD)

Regarding a past communication error of an ECU and sensor connected to sub bus 1 (in this case, normal is displayed when performing the CAN bus check, but communication DTCs are output), determine the part that had a malfunction based on DTCs output from the Main Body ECU (Multiplex Network Body ECU)*3.

Tech Tips

As gateway function equipped ECUs (sub bus monitor ECUs) monitor signals from all ECUs that are connected to sub buses, gateway function equipped ECUs can detect ECUs with a communication stop more accurately.
DTCs output from ECUs other than the Main Body ECU (Multiplex Network Body ECU)*3 (gateway function equipped ECU) are shown only as a reference.
Regarding a communication stop that is currently occurring in sub bus 1, the malfunctioning part can be confirmed easily by performing the CAN bus check using the GTS.
If an open occurs in just one of the wires of a CAN branch line, DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
○: DTC is output.
-: DTC is not output.
If an open occurs in just one of the lines of a CAN bus line, DTCs which are not related to malfunctioning parts may be output.
*1: DTC U0073 may be stored when communication is lost.
*2: DTC U1000 may be stored when communication is lost.
*3: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-			Trouble Mode (Open in CAN branch line(s))
-			Sub Bus 1
Output ECU		Output DTC	No. 1 Headlight ECU Sub-assembly LH Click here	Rear Television Camera Assembly Click here	Outer Mirror Control ECU Assembly (for Driver Side) Click here
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1117	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-
		U110387	-	-	-
		U110487	-	-	-
	Engine Stop and Start ECU	U0100	-	-	-
		U0104	-	-	-
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	-	-
		U0132	-	-	-
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
Bus 2	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	-	-
		U0132	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
		U1117	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
		U1117	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	○	-	-
		U023A	-	-	-
		U1104	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	-	-
		U0142	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U0198	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver except G-BOOK)	U0100	-	-	-
Bus 3	Telematics Transceiver (w/ Telematics Transceiver for G-BOOK)	U0140	-	-	-
		U0155	-	-	-
		U0198	-	-	-
	Option Connector (Bus Buffer ECU)	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
		U023A	-	-	-
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0122	-	-	-
		U0124	-	-	-
		U0126	-	-	-
		U1103	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	○	-	-
		U0101	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U0142	○	-	-
		U0155	○	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*3	U0182	○	-	-
		U0199	-	-	-
		U0200	-	-	○
		U0208	-	-	-
		U0265	-	○	-
		U1002	-	-	-
		U1115	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	○	-
		U0126	-	○	-
		U0129	-	○	-
		U0131	-	○	-
		U0140	-	○	-
		U0163	-	○	-
		U0233	-	○	-
		U1110	-	○	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	○
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Front Power Seat Switch LH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

-			Trouble Mode (Open in CAN branch line(s))
-			Sub Bus 1
Output ECU		Output DTC	Outer Mirror Control ECU Assembly (for Front Passenger Side) Click here	Front Power Seat Switch LH Click here	Multiplex Tilt and Telescopic ECU Click here
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	-	-	-
Bus 2	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1117	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-
		U110387	-	-	-
		U110487	-	-	-
	Engine Stop and Start ECU	U0100	-	-	-
		U0104	-	-	-
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	-	-
		U0132	-	-	-
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	-	-
		U0132	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
		U1117	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
		U1117	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	-	-	-
		U023A	-	-	-
		U1104	-	-	-
Bus 2	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	-	-
		U0142	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U0198	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver except G-BOOK)	U0100	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver for G-BOOK)	U0140	-	-	-
		U0155	-	-	-
		U0198	-	-	-
	Option Connector (Bus Buffer ECU)	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
		U023A	-	-	-
Bus 5	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0122	-	-	-
		U0124	-	-	-
		U0126	-	-	-
		U1103	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-
		U0101	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-
		U0199	○	-	-
		U0200	-	-	-
		U0208	-	○	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	○
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	○	-	-
	Front Power Seat Switch LH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	○
	Multiplex Tilt and Telescopic ECU	U0208	-	○	○

-			Trouble Mode (Open in CAN main bus line(s))
-			Sub Bus 1
Output ECU		Output DTC	Main Body ECU (Multiplex Network Body ECU)	No. 12 CAN J/C to No. 14 J/C	No. 14 J/C to No. 3 CAN J/C	No. 3 CAN J/C to No. 1 CAN Junction Terminal
Bus 2	Airbag Sensor Assembly	U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	-	-
		U0151	-	-	-	-
		U0155	-	-	-	-
		U0163	-	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-	-
		U0101	-	-	-	-
		U0120	-	-	-	-
		U0129	-	-	-	-
		U0151	-	-	-	-
		U0155	-	-	-	-
		U023A	-	-	-	-
		U0327	-	-	-	-
		U1117	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-	-
		U110387	-	-	-	-
		U110487	-	-	-	-
	Engine Stop and Start ECU	U0100	-	-	-	-
		U0104	-	-	-	-
		U0121	-	-	-	-
		U0123	-	-	-	-
		U0126	-	-	-	-
		U0131	-	-	-	-
		U0132	-	-	-	-
		U0140	-	-	-	-
		U0151	-	-	-	-
		U0164	-	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-	-
		U0129	-	-	-	-
		U0132	-	-	-	-
		U1103	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
		U1103	-	-	-	-
		U1117	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-	-
		U0140	-	-	-	-
		U0155	-	-	-	-
		U1103	-	-	-	-
		U1117	-	-	-	-
Bus 2	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-	-
	Combination Meter Assembly	U0100	-	-	-	-
		U0129	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	-	-
		U0151	-	-	-	-
		U0163	-	-	-	-
		U0182	○	-	-	-
		U023A	-	-	-	-
		U1104	-	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-	-
		U0122	-	-	-	-
		U0142	-	-	-	-
	Steering Sensor	-	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-	-
		U0124	-	-	-	-
		U0126	-	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0131	-	-	-	-
		U0140	-	-	-	-
		U0155	-	-	-	-
		U0164	-	-	-	-
		U0198	-	-	-	-
		U0233	-	-	-	-
		U1110	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver except G-BOOK)	U0100	-	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver for G-BOOK)	U0140	-	-	-	-
		U0155	-	-	-	-
		U0198	-	-	-	-
	Option Connector (Bus Buffer ECU)	-	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0142	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
Bus 5	Clearance Warning ECU Assembly	U0101	-	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0235	-	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0235	-	-	-	-
		U023A	-	-	-	-
	Forward Recognition Camera	U0100	-	-	-	-
		U0101	-	-	-	-
		U0123	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
		U0235	-	-	-	-
		U1104	-	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-	-
	Absorber Control ECU	U0100	-	-	-	-
		U0101	-	-	-	-
		U0122	-	-	-	-
		U0124	-	-	-	-
		U0126	-	-	-	-
		U1103	-	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	○	-	-	-
		U0101	○	-	-	-
		U0126	○	-	-	-
		U0129	○	-	-	-
		U0142	○	-	-	-
		U0155	○	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	○	-	-	-
		U0199	○	○	○	-
		U0200	○	-	-	-
		U0208	○	○	-	-
		U0265	○	○	-	-
		U1002	-	-	-	-
		U1115	○	○	○	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	○	○	-	-
		U0126	○	○	-	-
		U0129	○	○	-	-
		U0131	○	○	-	-
		U0140	○	○	-	-
		U0163	○	○	-	-
		U0233	○	○	-	-
		U1110	○	○	-	-
Sub Bus 1	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	○	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	○	○	○	-
	Front Power Seat Switch LH	-	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	○	○	○	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	○	-

-			Trouble Mode (CAN bus lines short circuit or short to GND)
-			Sub Bus 1
Output ECU		Output DTC	CANH to CANL	CANH Short to Ground	CANL Short to Ground
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1117	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-
		U110387	-	-	-
		U110487	-	-	-
Bus 2	Engine Stop and Start ECU	U0100	-	-	-
		U0104	-	-	-
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	-	-
		U0132	-	-	-
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	-	-
		U0132	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
		U1117	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
		U1117	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	○	○	○
		U023A	-	-	-
		U1104	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	-	-
		U0142	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U0198	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver except G-BOOK)	U0100	-	-	-
	Telematics Transceiver (w/ Telematics Transceiver for G-BOOK)	U0140	-	-	-
		U0155	-	-	-
		U0198	-	-	-
	Option Connector (Bus Buffer ECU)	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
		U023A	-	-	-
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
Bus 5	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0122	-	-	-
		U0124	-	-	-
		U0126	-	-	-
		U1103	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	○	○	○
		U0101	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0142	○	○	○
		U0155	○	○	○
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	○	○	○
		U0199	○	○	○
		U0200	○	○	○
		U0208	○	○	○
		U0265	○	○	○
		U1002	-	-	-
		U1115	○	○	○
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0131	○	○	○
		U0140	○	○	○
		U0163	○	○	○
		U0233	○	○	○
		U1110	○	○	○
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	○	○	○
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	○	○	○
	Front Power Seat Switch LH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	○	○	○
	Multiplex Tilt and Telescopic ECU	U0208	○	○	○

DTC COMBINATION TABLE (OPEN OR SHORT IN BUS 2, PAST COMMUNICATION ERROR) (for RHD)

If DTCs indicating a past communication error of an ECU or sensor connected to Bus 2 are output (but the bus is normal when performing the CAN bus check), the probable area that had a malfunction can be determined based on the following DTC combination table.

Tech Tips

Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.
If there is an open in a CAN branch line or a communication stop is currently occurring, the malfunctioning area can easily be determined by performing a CAN bus check using the GTS to determine which ECU or sensor that is connected to the branch line is not responding (the ECU or sensor has a background color of red).
If an open in a CAN main bus line, a short between the CAN bus lines (CANH and CANL) or a short to ground or +B in the CAN bus occurs, DTCs of almost all ECUs (or sensors) on the CAN bus may be output, or a message indicating a communication error may be displayed on the GTS screen. In this case, check the resistance of the CAN bus (steps 10 to 21) first.

Click here
If an open occurs in just one of the lines of a CAN bus line(s), DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
○: DTC is output.
-: DTC is not output.
If an open occurs in just one of the lines of a CAN bus line, DTCs which are not related to malfunctioning parts may be output.
*1: DTC U0073 may be stored when communication is lost.
*2: DTC U1000 may be stored when communication is lost.
*3: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-			Trouble Mode (Open in CAN branch line(s))
-			Bus 2
Output ECU		Output DTC	Center Airbag Sensor Communication Stop Mode Click here	Air Conditioning Amplifier Communication Stop Mode Click here	Main Body ECU Communication Stop Mode Click here	Central Gateway ECU Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	U0125	○	-	-	-
		U0126	○	-	-	-
		U0129	○	-	-	-
		U0130	○	-	-	-
Bus 2	Air Conditioning Amplifier Assembly	U0100	-	○	-	-
		U0131	-	○	-	-
		U0142	-	○	○	-
		U0151	○	○	-	-
		U0155	-	○	-	-
		U0163	-	○	-	○
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	○	-
		U0101	-	-	○	-
		U0120	-	-	○	-
		U0129	-	-	○	-
		U0151	○	-	○	-
		U0155	-	-	○	-
		U023A	-	-	○	○
		U0327	-	-	○	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-	○
	ECM (for 2GR-FKS)	U012287	-	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-	-
		U110387	-	-	-	-
		U110487	-	-	-	○
	Engine Stop and Start ECU	U0100	-	-	-	-
		U0104	-	-	-	○
		U0121	-	-	-	-
		U0123	-	-	-	-
		U0126	-	-	-	-
		U0131	-	-	-	-
		U0132	-	-	-	○
		U0140	-	-	○	-
		U0151	○	-	-	-
		U0164	-	○	-	-
	Power Steering ECU Assembly	U0100	-	-	-	-
		U0129	-	-	-	-
		U0130	-	-	-	-
		U0132	-	-	-	○
		U1103	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-	-
		U0142	-	-	○	-
		U0155	-	-	-	-
		U1103	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-	-
		U0140	-	-	○	-
		U0155	-	-	-	-
		U1103	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-	-
Bus 2	Combination Meter Assembly	U0100	-	-	-	-
		U0129	-	-	-	-
		U0130	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	○	-
		U0151	○	-	-	-
		U0163	-	-	-	○
		U0182	-	-	○	-
		U023A	-	-	-	○
		U1104	-	-	-	○
	Steering Sensor	-	-	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-	-
		U0122	-	-	-	-
		U0142	-	-	○	-
	Front Steering Control ECU	U0100	-	-	-	-
		U0101	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0131	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-	-
		U0124	-	-	-	-
		U0126	-	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-	○
		U0126	-	-	-	○
		U0129	-	-	-	○
		U0130	-	-	-	○
		U0131	-	-	-	○
		U0140	-	-	○	○
		U0155	-	-	-	○
		U0164	-	○	-	○
		U0233	-	-	-	-
		U1110	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
Bus 4	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-	-
	Absorber Control ECU	U0130	-	-	-	-
	Front Steering Control ECU	U0129	-	-	-	-
	Front Steering Control ECU	U0131	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0130	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-	○
		U0125	-	-	-	○
		U0126	-	-	-	○
		U0129	-	-	-	○
		U0142	-	-	○	○
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-	○
	Clearance Warning ECU Assembly	U0155	-	-	-	○
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-	○
		U0125	-	-	-	○
		U0126	-	-	-	○
		U0129	-	-	-	○
		U0235	-	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-	○
		U0125	-	-	-	○
		U0126	-	-	-	○
		U0129	-	-	-	○
		U0235	-	-	-	-
		U023A	-	-	-	-
	Forward Recognition Camera	U0100	-	-	-	○
		U0101	-	-	-	○
		U0123	-	-	-	○
		U0126	-	-	-	○
		U0129	-	-	-	○
		U0130	-	-	-	○
		U0131	-	-	-	○
		U0142	-	-	○	○
		U0155	-	-	-	○
		U0235	-	-	-	-
		U1104	-	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-	-
	Absorber Control ECU	U0100	-	-	-	○
		U0101	-	-	-	○
		U0122	-	-	-	○
		U0124	-	-	-	○
		U0126	-	-	-	○
		U1103	-	-	-	○
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	○	-
		U0101	-	-	○	-
		U0126	-	-	○	-
		U0129	-	-	○	-
		U0142	-	-	-	-
		U0155	-	-	○	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-	-
		U0199	-	-	-	-
		U0200	-	-	-	-
		U0208	-	-	-	-
		U0265	-	-	-	-
		U1002	-	-	-	-
		U1115	-	-	-	-
Sub Bus 1	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	○	-
		U0126	-	-	○	-
		U0129	-	-	○	-
		U0130	-	-	○	-
		U0131	-	-	○	-
		U0140	-	-	-	-
		U0163	-	-	○	○
		U0233	-	-	○	○
		U1110	-	-	○	○
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-	-
	Front Power Seat Switch RH	-	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-	-

-			Trouble Mode (Open in CAN branch line(s))
-			Bus 2
Output ECU		Output DTC	Engine Stop and Start ECU Communication Stop Mode Click here	Power Steering ECU Communication Stop Mode Click here	Certification ECU Communication Stop Mode Click here	Steering Angle Sensor Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	U0125	-	-	-	-
		U0126	-	-	-	○
		U0129	-	-	-	-
		U0130	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-	-
		U0131	-	○	-	-
		U0142	-	-	-	-
		U0151	-	-	-	-
		U0155	-	-	-	-
		U0163	-	-	-	-
Bus 2	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-	-
		U0101	-	-	-	-
		U0120	-	-	○	-
		U0129	-	-	-	-
		U0151	-	-	-	-
		U0155	-	-	-	-
		U023A	-	-	-	-
		U0327	-	-	○	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-	-
		U110387	○	-	-	-
		U110487	-	-	-	-
	Engine Stop and Start ECU	U0100	○	-	-	-
		U0104	○	-	-	-
		U0121	○	-	-	-
		U0123	○	-	-	-
		U0126	○	-	-	○
		U0131	○	○	-	-
		U0132	○	-	-	-
		U0140	○	-	-	-
		U0151	○	-	-	-
		U0164	○	-	-	-
	Power Steering ECU Assembly	U0100	-	○	-	-
		U0129	-	○	-	-
		U0130	-	○	-	-
		U0132	-	○	-	-
		U1103	○	○	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	○	-
		U0142	-	-	○	-
		U0155	-	-	○	-
		U1103	○	-	○	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	○	-
		U0140	-	-	○	-
		U0155	-	-	○	-
		U1103	○	-	○	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	○	-
	Combination Meter Assembly	U0100	-	-	-	-
		U0129	-	-	-	-
		U0130	-	-	-	-
		U0131	-	○	-	-
		U0142	-	-	-	-
		U0151	-	-	-	-
		U0163	-	-	-	-
		U0182	-	-	-	-
		U023A	-	-	-	-
		U1104	-	-	-	-
Bus 2	Steering Sensor	-	-	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-	-
		U0122	-	-	-	-
		U0142	-	-	-	-
	Front Steering Control ECU	U0100	-	-	-	-
		U0101	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	-	○
		U0129	-	-	-	-
		U0131	-	○	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-	-
		U0124	-	-	-	-
		U0126	-	-	-	○
	Yaw Rate Sensor Assembly	-	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-	-
		U0126	-	-	-	○
		U0129	-	-	-	-
		U0130	-	-	-	-
		U0131	-	○	-	-
		U0140	-	-	-	-
		U0155	-	-	-	-
		U0164	-	-	-	-
		U0233	-	-	-	-
		U1110	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
Bus 4	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-	-
	Absorber Control ECU	U0130	-	-	-	-
	Front Steering Control ECU	U0129	-	-	-	-
	Front Steering Control ECU	U0131	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0130	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	-	○
		U0129	-	-	-	-
		U0142	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-	-
Bus 5	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	-	○
		U0129	-	-	-	-
		U0235	-	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	-	○
		U0129	-	-	-	-
		U0235	-	-	-	-
		U023A	-	-	-	-
	Forward Recognition Camera	U0100	-	-	-	-
		U0101	-	-	-	-
		U0123	-	-	-	-
		U0126	-	-	-	○
		U0129	-	-	-	-
		U0130	-	-	-	-
		U0131	-	○	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
		U0235	-	-	-	-
		U1104	-	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-	-
	Absorber Control ECU	U0100	-	-	-	-
		U0101	-	-	-	-
		U0122	-	-	-	-
		U0124	-	-	-	-
		U0126	-	-	-	○
		U1103	○	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-	-
		U0101	-	-	-	-
		U0126	-	-	-	○
		U0129	-	-	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-	-
		U0199	-	-	-	-
		U0200	-	-	-	-
		U0208	-	-	-	-
		U0265	-	-	-	-
		U1002	-	-	-	-
		U1115	-	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-	-
		U0126	-	-	-	○
		U0129	-	-	-	-
		U0130	-	-	-	-
		U0131	-	○	-	-
		U0140	-	-	-	-
		U0163	-	-	-	-
		U0233	-	-	-	-
		U1110	-	-	-	-
Sub Bus 1	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-	-
	Front Power Seat Switch RH	-	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-	-

-			Trouble Mode (Open in CAN branch line(s))
-			Bus 2
Output ECU		Output DTC	ASC ECU Communication Stop Mode Click here	Steering Control ECU Communication Stop Mode Click here	Brake Actuator (Skid Control ECU) Communication Stop Mode Click here	Yaw Rate Sensor Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	U0125	-	-	-	○
		U0126	-	-	-	-
		U0129	-	-	○	-
		U0130	-	○	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	-	-
		U0151	-	-	-	-
		U0155	-	-	-	-
		U0163	-	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-	-
		U0101	-	-	-	-
		U0120	-	-	-	-
		U0129	-	-	○	-
		U0151	-	-	-	-
		U0155	-	-	-	-
		U023A	-	-	-	-
		U0327	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	○	-
Bus 2	ECM (for 8AR-FTS)	U012287	-	-	○	-
		U110387	-	-	-	-
		U110487	-	-	-	-
	Engine Stop and Start ECU	U0100	-	-	-	-
		U0104	-	-	-	-
		U0121	-	-	○	-
		U0123	-	-	-	○
		U0126	-	-	-	-
		U0131	-	-	-	-
		U0132	-	-	-	-
		U0140	-	-	-	-
		U0151	-	-	-	-
		U0164	-	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-	-
		U0129	-	-	○	-
		U0130	-	○	-	-
		U0132	-	-	-	-
		U1103	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
		U1103	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-	-
		U0140	-	-	-	-
		U0155	-	-	-	-
		U1103	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-	-
	Combination Meter Assembly	U0100	-	-	-	-
		U0129	-	-	○	-
		U0130	-	○	-	-
		U0131	-	-	-	-
		U0142	-	-	-	-
		U0151	-	-	-	-
		U0163	-	-	-	-
		U0182	-	-	-	-
		U023A	-	-	-	-
		U1104	-	-	-	-
	Steering Sensor	-	-	-	-	-
	Stereo Component Equalizer Assembly	U0100	○	-	-	-
		U0122	○	-	○	-
		U0142	○	-	-	-
	Front Steering Control ECU	U0100	-	○	-	-
		U0101	-	○	-	-
		U0125	-	○	-	○
		U0126	-	○	-	-
		U0129	-	○	○	-
		U0131	-	○	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	○	-
		U0124	-	-	○	○
		U0126	-	-	○	-
Bus 2	Yaw Rate Sensor Assembly	-	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	○	-
		U0130	-	○	-	-
		U0131	-	-	-	-
		U0140	-	-	-	-
		U0155	-	-	-	-
		U0164	-	-	-	-
		U0233	-	-	-	-
		U1110	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
Bus 4	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-	-
	Absorber Control ECU	U0130	-	-	-	-
	Front Steering Control ECU	U0129	-	-	-	-
	Front Steering Control ECU	U0131	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0130	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-	-
		U0125	-	-	-	○
		U0126	-	-	-	-
		U0129	-	-	○	-
		U0142	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-	-
		U0125	-	-	-	○
		U0126	-	-	-	-
		U0129	-	-	○	-
		U0235	-	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-	-
		U0125	-	-	-	○
		U0126	-	-	-	-
		U0129	-	-	○	-
		U0235	-	-	-	-
		U023A	-	-	-	-
Bus 5	Forward Recognition Camera	U0100	-	-	-	-
		U0101	-	-	-	-
		U0123	-	-	-	○
		U0126	-	-	-	-
		U0129	-	-	○	-
		U0130	-	○	-	-
		U0131	-	-	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
		U0235	-	-	-	-
		U1104	-	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-	-
	Absorber Control ECU	U0100	-	-	-	-
		U0101	-	-	-	-
		U0122	-	-	○	-
		U0124	-	-	-	○
		U0126	-	-	-	-
		U1103	-	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-	-
		U0101	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	○	-
		U0142	-	-	-	-
		U0155	-	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-	-
		U0199	-	-	-	-
		U0200	-	-	-	-
		U0208	-	-	-	-
		U0265	-	-	-	-
		U1002	-	-	-	-
		U1115	-	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	○	-
		U0130	-	○	-	-
		U0131	-	-	-	-
		U0140	-	-	-	-
		U0163	-	-	-	-
		U0233	-	-	-	-
		U1110	-	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-	-
	Front Power Seat Switch RH	-	-	-	-	-
Sub Bus 1	Multiplex Tilt and Telescopic ECU	U0142	-	-	-	-
Sub Bus 1	Multiplex Tilt and Telescopic ECU	U0208	-	-	-	-

-			Trouble Mode (Open in CAN main bus line(s))
-			Bus 2
Output ECU		Output DTC	ECM Communication Stop Mode Click here	No. 1 CAN J/C to No. 2 CAN J/C	Combination Meter ECU Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	○	-
	Air Conditioning Amplifier Assembly	U0100	○	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	○	-
		U0155	-	○	○
		U0163	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	○	-	-
		U0101	○	-	-
		U0120	-	-	-
		U0129	-	○	-
		U0151	-	○	-
		U0155	-	○	○
		U023A	-	-	-
		U0327	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	○	-	-
	ECM (for 2GR-FKS)	U012287	○	○	-
	ECM (for 8AR-FTS)	U012287	○	○	-
		U110387	○	○	-
		U110487	○	-	-
	Engine Stop and Start ECU	U0100	○	○	-
		U0104	-	○	-
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	○	-
		U0132	-	○	-
		U0140	-	○	-
		U0151	-	-	-
		U0164	-	○	-
Bus 2	Power Steering ECU Assembly	U0100	○	-	-
		U0129	-	○	-
		U0130	-	-	-
		U0132	-	-	-
		U1103	-	○	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	○	-	-
		U0142	-	-	-
		U0155	-	○	○
		U1103	-	○	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	○	-	-
		U0140	-	-	-
		U0155	-	○	○
		U1103	-	○	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	○	-	-
	Combination Meter Assembly	U0100	○	○	○
		U0129	-	-	○
		U0130	-	○	○
		U0131	-	○	○
		U0142	-	○	○
		U0151	-	-	○
		U0163	-	○	○
		U0182	-	○	○
		U023A	-	○	○
		U1104	-	○	○
	Steering Sensor	-	-	-	-
	Stereo Component Equalizer Assembly	U0100	○	-	-
		U0122	-	○	-
		U0142	-	-	-
	Front Steering Control ECU	U0100	○	-	-
		U0101	○	-	-
		U0125	-	○	-
		U0126	-	○	-
		U0129	-	○	-
		U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	○	○	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	○	-	-
		U0126	-	○	-
		U0129	-	○	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0155	-	○	○
		U0164	-	-	-
		U0233	-	-	-
		U1110	-	-	-
Bus 3	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
Bus 4	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	Absorber Control ECU	U0130	-	-	-
	Front Steering Control ECU	U0129	-	-	-
	Front Steering Control ECU	U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0130	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	○	-	-
		U0125	-	○	-
		U0126	-	○	-
		U0129	-	○	-
		U0142	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	○	-	-
	Clearance Warning ECU Assembly	U0155	-	○	○
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	○	-	-
		U0125	-	○	-
		U0126	-	○	-
		U0129	-	○	-
		U0235	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	○	-	-
		U0125	-	○	-
		U0126	-	○	-
		U0129	-	○	-
		U0235	-	-	-
		U023A	-	-	-
	Forward Recognition Camera	U0100	○	-	-
		U0101	○	-	-
		U0123	-	○	-
		U0126	-	○	-
		U0129	-	○	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	○	○
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
Bus 5	Absorber Control ECU	U0100	○	-	-
		U0101	○	-	-
		U0122	-	○	-
		U0124	-	○	-
		U0126	-	○	-
		U1103	-	○	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	○	-	-
		U0101	○	-	-
		U0126	-	○	-
		U0129	-	○	-
		U0142	-	-	-
		U0155	-	○	○
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-
		U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	○	-	-
		U0126	-	○	-
		U0129	-	○	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Front Power Seat Switch RH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

-			Trouble Mode (CAN bus lines short circuit or short to GND)
-			Bus 2
Output ECU		Output DTC	CANH to CANL	CANH Short to Ground	CANL Short to Ground
Bus 2	Airbag Sensor Assembly	U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0130	○	○	○
Bus 2	Air Conditioning Amplifier Assembly	U0100	○	○	○
		U0131	○	○	○
		U0142	○	○	○
		U0151	○	○	○
		U0155	○	○	○
		U0163	○	○	○
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	○	○	○
		U0101	○	○	○
		U0120	○	○	○
		U0129	○	○	○
		U0151	○	○	○
		U0155	○	○	○
		U023A	○	○	○
		U0327	○	○	○
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	○	○	○
	ECM (for 2GR-FKS)	U012287	○	○	○
	ECM (for 8AR-FTS)	U012287	○	○	○
		U110387	○	○	○
		U110487	○	○	○
	Engine Stop and Start ECU	U0100	○	○	○
		U0104	○	○	○
		U0121	○	○	○
		U0123	○	○	○
		U0126	○	○	○
		U0131	○	○	○
		U0132	○	○	○
		U0140	○	○	○
		U0151	○	○	○
		U0164	○	○	○
	Power Steering ECU Assembly	U0100	○	○	○
		U0129	○	○	○
		U0130	○	○	○
		U0132	○	○	○
		U1103	○	○	○
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	○	○	○
		U0142	○	○	○
		U0155	○	○	○
		U1103	○	○	○
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	○	○	○
		U0140	○	○	○
		U0155	○	○	○
		U1103	○	○	○
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	○	○	○
Bus 2	Combination Meter Assembly	U0100	○	○	○
		U0129	○	○	○
		U0130	○	○	○
		U0131	○	○	○
		U0142	○	○	○
		U0151	○	○	○
		U0163	○	○	○
		U0182	○	○	○
		U023A	○	○	○
		U1104	○	○	○
	Steering Sensor	-	-	-	-
	Stereo Component Equalizer Assembly	U0100	○	○	○
		U0122	○	○	○
		U0142	○	○	○
	Front Steering Control ECU	U0100	○	○	○
		U0101	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0131	○	○	○
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	○	○	○
		U0124	○	○	○
		U0126	○	○	○
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0130	○	○	○
		U0131	○	○	○
		U0140	○	○	○
		U0155	○	○	○
		U0164	○	○	○
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
Bus 4	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	Absorber Control ECU	U0130	-	-	-
	Front Steering Control ECU	U0129	-	-	-
	Front Steering Control ECU	U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0130	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0142	○	○	○
Bus 5	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	○	○	○
	Clearance Warning ECU Assembly	U0155	○	○	○
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0235	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0235	-	-	-
		U023A	-	-	-
	Forward Recognition Camera	U0100	○	○	○
		U0101	○	○	○
		U0123	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0130	○	○	○
		U0131	○	○	○
		U0142	○	○	○
		U0155	○	○	○
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	○	○	○
		U0101	○	○	○
		U0122	○	○	○
		U0124	○	○	○
		U0126	○	○	○
		U1103	○	○	○
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	○	○	○
		U0101	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0142	-	-	-
		U0155	○	○	○
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-
		U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	-
Sub Bus 1	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0130	○	○	○
		U0131	○	○	○
		U0140	-	-	-
		U0163	○	○	○
		U0233	○	○	○
		U1110	○	○	○
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Front Power Seat Switch RH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

DTC COMBINATION TABLE (OPEN OR SHORT IN BUS 3, PAST COMMUNICATION ERROR) (for RHD)

If DTCs indicating a past communication error of an ECU or sensor connected to Bus 3 are output (but the bus is normal when performing the CAN bus check), the probable area that had a malfunction can be determined based on the following DTC combination table.

Tech Tips

Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.
If there is an open in a CAN branch line or a communication stop is currently occurring, the malfunctioning area can easily be determined by performing a CAN bus check using the GTS to determine which ECU or sensor that is connected to the branch line is not responding (the ECU or sensor has a background color of red).
If an open in a CAN main bus line, a short between the CAN bus lines (CANH and CANL) or a short to ground or +B in the CAN bus occurs, DTCs of almost all ECUs (or sensors) on the CAN bus may be output, or a message indicating a communication error may be displayed on the GTS screen. In this case, check the resistance of the CAN bus (steps 10 to 21) first.

Click here
If an open occurs in just one of the lines of a CAN bus line(s), DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
○: DTC is output.
-: DTC is not output.
If an open occurs in just one of the lines of a CAN bus line, DTCs which are not related to malfunctioning parts may be output.
*1: DTC U0073 may be stored when communication is lost.
*2: DTC U1000 may be stored when communication is lost.
*3: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-			Trouble Mode (Open in CAN branch line(s))	Trouble Mode (Open in CAN main bus line(s))
-			Bus 3
Output ECU		Output DTC	Radio Receiver Assembly Communication Stop Mode Click here	Central Gateway ECU (Network Gateway ECU) (CA3H and CA3L Terminal)	Central Gateway ECU (Network Gateway ECU) (CAYH and CAYL Terminal)
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	○	○	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	-	-	-
		U0327	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-
		U110387	-	-	-
		U110487	-	-	-
Bus 2	Engine Stop and Start ECU	U0100	-	-	-
		U0104	-	-	-
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	-	-
		U0132	-	-	-
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0132	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	○	○	-
		U0182	-	-	-
		U023A	-	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	-	-
		U0142	-	-	-
	Front Steering Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	○	○	-
		U0126	○	○	-
		U0129	○	○	-
		U0130	○	○	-
		U0131	○	○	-
		U0140	○	○	-
		U0155	○	○	-
		U0164	○	○	-
		U0233	○	○	-
		U1110	○	○	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
Bus 4	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	Absorber Control ECU	U0130	-	-	-
	Front Steering Control ECU	U0129	-	-	-
	Front Steering Control ECU	U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0130	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
		U023A	-	-	-
Bus 5	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0122	-	-	-
		U0124	-	-	-
		U0126	-	-	-
		U1103	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-
		U0101	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-
		U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	○	○	-
		U0233	-	-	-
		U1110	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Front Power Seat Switch RH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

-			Trouble Mode (CAN bus lines short circuit or short to GND)
-			Bus 3
Output ECU		Output DTC	CANH to CANL	CANH Short to Ground	CANL Short to Ground
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	○	○	○
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	-	-	-
		U0327	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-
		U110387	-	-	-
		U110487	-	-	-
	Engine Stop and Start ECU	U0100	-	-	-
		U0104	-	-	-
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	-	-
		U0132	-	-	-
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0132	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
Bus 2	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	○	○	○
		U0182	-	-	-
		U023A	-	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	-	-
		U0142	-	-	-
	Front Steering Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0130	○	○	○
		U0131	○	○	○
		U0140	○	○	○
		U0155	○	○	○
		U0164	○	○	○
		U0233	○	○	○
		U1110	○	○	○
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
Bus 4	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	Absorber Control ECU	U0130	-	-	-
Bus 4	Front Steering Control ECU	U0129	-	-	-
	Front Steering Control ECU	U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0130	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
		U023A	-	-	-
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0122	-	-	-
		U0124	-	-	-
		U0126	-	-	-
		U1103	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-
		U0101	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
		U0155	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-
		U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	○	○	○
		U0233	-	-	-
		U1110	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Front Power Seat Switch RH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

DTC COMBINATION TABLE (OPEN OR SHORT IN BUS 4, PAST COMMUNICATION ERROR) (for RHD)

If DTCs indicating a past communication error of an ECU or sensor connected to Bus 4 are output (but the bus is normal when performing the CAN bus check), the probable area that had a malfunction can be determined based on the following DTC combination table.

Tech Tips

Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.
If there is an open in a CAN branch line or a communication stop is currently occurring, the malfunctioning area can easily be determined by performing a CAN bus check using the GTS to determine which ECU or sensor that is connected to the branch line is not responding (the ECU or sensor has a background color of red).
If an open in a CAN main bus line, a short between the CAN bus lines (CANH and CANL) or a short to ground or +B in the CAN bus occurs, DTCs of almost all ECUs (or sensors) on the CAN bus may be output, or a message indicating a communication error may be displayed on the GTS screen. In this case, check the resistance of the CAN bus (steps 10 to 21) first.

Click here
If an open occurs in just one of the lines of a CAN bus line(s), DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
○: DTC is output.
-: DTC is not output.
If an open occurs in just one of the lines of a CAN bus line, DTCs which are not related to malfunctioning parts may be output.
*1: DTC U0073 may be stored when communication is lost.
*2: DTC U1000 may be stored when communication is lost.
*3: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-			Trouble Mode (Open in CAN branch line(s))
-			Bus 4
Output ECU		Output DTC	Central Gateway ECU Communication Stop Mode Click here	Suspension Control ECU Communication Stop Mode Click here	Steering Control ECU Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	-	-	-
Bus 2	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	-	-	-
		U0327	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-
		U110387	-	-	-
		U110487	-	-	-
	Engine Stop and Start ECU	U0100	-	-	-
		U0104	-	-	-
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	-	-
		U0132	-	-	-
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0132	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	-	-	-
		U023A	-	-	-
		U1104	-	-	-
Bus 2	Steering Sensor	-	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	-	-
		U0142	-	-	-
	Front Steering Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
Bus 4	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	Absorber Control ECU	U0130	-	○	○
	Front Steering Control ECU	U0129	-	-	○
	Front Steering Control ECU	U0131	-	-	○
	Skid Control ECU (Brake Actuator Assembly)*1	U0130	-	-	○
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
Bus 5	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
		U023A	-	-	-
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0122	-	-	-
		U0124	-	-	-
		U0126	-	-	-
		U1103	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-
		U0101	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-
		U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
Sub Bus 1	Front Power Seat Switch RH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

-			Trouble Mode (Open in CAN main bus line(s))
-			Bus 4
Output ECU		Output DTC	Brake Actuator (Skid Control ECU) Communication Stop Mode Click here	No. 8 CAN J/C to No. 14 J/C	Power Steering ECU Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	-	-	-
		U0327	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-
		U110387	-	-	-
		U110487	-	-	-
Bus 2	Engine Stop and Start ECU	U0100	-	-	-
		U0104	-	-	-
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	-	-
		U0132	-	-	-
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0132	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	-	-	-
		U023A	-	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	-	-
		U0142	-	-	-
	Front Steering Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
Bus 4	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Power Steering ECU Assembly	U0129	○	○	○
	Absorber Control ECU	U0130	-	-	-
	Front Steering Control ECU	U0129	○	-	-
	Front Steering Control ECU	U0131	-	○	○
	Skid Control ECU (Brake Actuator Assembly)*1	U0130	○	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
		U023A	-	-	-
Bus 5	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0122	-	-	-
		U0124	-	-	-
		U0126	-	-	-
		U1103	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-
		U0101	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-
		U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Front Power Seat Switch RH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

-			Trouble Mode (CAN bus lines short circuit or short to GND)
-			Bus 4
Output ECU		Output DTC	CANH to CANL	CANH Short to Ground	CANL Short to Ground
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	-	-	-
		U0327	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-
		U110387	-	-	-
		U110487	-	-	-
	Engine Stop and Start ECU	U0100	-	-	-
		U0104	-	-	-
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	-	-
		U0132	-	-	-
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0132	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
Bus 2	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	-	-	-
		U023A	-	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	-	-
		U0142	-	-	-
	Front Steering Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
Bus 4	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Power Steering ECU Assembly	U0129	○	○	○
	Absorber Control ECU	U0130	○	○	○
Bus 4	Front Steering Control ECU	U0129	○	○	○
	Front Steering Control ECU	U0131	○	○	○
	Skid Control ECU (Brake Actuator Assembly)*1	U0130	○	○	○
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
		U023A	-	-	-
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0122	-	-	-
		U0124	-	-	-
		U0126	-	-	-
		U1103	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-
		U0101	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
		U0155	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-
		U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Front Power Seat Switch RH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

DTC COMBINATION TABLE (OPEN OR SHORT IN BUS 5, PAST COMMUNICATION ERROR) (for RHD)

If DTCs indicating a past communication error of an ECU or sensor connected to Bus 5 are output (but the bus is normal when performing the CAN bus check), the probable area that had a malfunction can be determined based on the following DTC combination table.

Tech Tips

Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.
If there is an open in a CAN branch line or a communication stop is currently occurring, the malfunctioning area can easily be determined by performing a CAN bus check using the GTS to determine which ECU or sensor that is connected to the branch line is not responding (the ECU or sensor has a background color of red).
If an open in a CAN main bus line, a short between the CAN bus lines (CANH and CANL) or a short to ground or +B in the CAN bus occurs, DTCs of almost all ECUs (or sensors) on the CAN bus may be output, or a message indicating a communication error may be displayed on the GTS screen. In this case, check the resistance of the CAN bus (steps 10 to 21) first.

Click here
If an open occurs in just one of the lines of a CAN bus line(s), DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
○: DTC is output.
-: DTC is not output.
If an open occurs in just one of the lines of a CAN bus line, DTCs which are not related to malfunctioning parts may be output.
*1: DTC U0073 may be stored when communication is lost.
*2: DTC U1000 may be stored when communication is lost.
*3: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-			Trouble Mode (Open in CAN branch line(s))
-			Bus 5
Output ECU		Output DTC	Blind Spot Monitor Sensor Communication Stop Mode Click here	Clearance Warning ECU Communication Stop Mode Click here	Driving Support ECU Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	-	-	-
Bus 2	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	-	-	-
		U0327	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	○
	ECM (for 2GR-FKS)	U012287	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-
		U110387	-	-	-
		U110487	-	-	○
	Engine Stop and Start ECU	U0100	-	-	-
		U0104	-	-	○
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	-	-
		U0132	-	-	-
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0132	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	-	-	-
		U023A	-	-	-
		U1104	-	-	○
Bus 2	Steering Sensor	-	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	-	-
		U0142	-	-	-
	Front Steering Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U0233	○	-	-
		U1110	-	○	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
Bus 4	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	Absorber Control ECU	U0130	-	-	-
	Front Steering Control ECU	U0129	-	-	-
	Front Steering Control ECU	U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0130	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	○	-	-
		U0125	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U0142	○	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	○	-
	Clearance Warning ECU Assembly	U0155	-	○	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	○
		U0125	-	-	○
		U0126	-	-	○
		U0129	-	-	○
		U0235	-	-	○
Bus 5	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	○
		U0125	-	-	○
		U0126	-	-	○
		U0129	-	-	○
		U0235	-	-	○
		U023A	-	-	○
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	○
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0122	-	-	-
		U0124	-	-	-
		U0126	-	-	-
		U1103	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-
		U0101	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-
		U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	○	-	-
		U1110	-	○	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
Sub Bus 1	Front Power Seat Switch RH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

-			Trouble Mode (Open in CAN branch line(s))
-			Bus 5
Output ECU		Output DTC	Front Camera Module Communication Stop Mode Click here	Millimeter Wave Radar Sensor Communication Stop Mode Click here	Suspension Control ECU Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	○	-	-
		U0327	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-
		U110387	-	-	-
		U110487	-	-	-
Bus 2	Engine Stop and Start ECU	U0100	-	-	-
		U0104	-	-	-
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	-	-
		U0132	-	-	○
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0132	-	-	○
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	-	-	-
		U023A	○	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	-	-
		U0142	-	-	-
	Front Steering Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
Bus 4	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	Absorber Control ECU	U0130	-	-	-
	Front Steering Control ECU	U0129	-	-	-
	Front Steering Control ECU	U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0130	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	○	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	○	-
		U023A	○	-	-
Bus 5	Forward Recognition Camera	U0100	○	-	-
		U0101	○	-	-
		U0123	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U0130	○	-	-
		U0131	○	-	-
		U0142	○	-	-
		U0155	○	-	-
		U0235	○	○	-
		U1104	○	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	-	-	○
		U0101	-	-	○
		U0122	-	-	○
		U0124	-	-	○
		U0126	-	-	○
		U1103	-	-	○
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-
		U0101	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-
		U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Front Power Seat Switch RH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

-			Trouble Mode (Open in CAN main bus line(s))
-			Bus 5
Output ECU		Output DTC	Central Gateway ECU Communication Stop Mode Click here	No. 9 CAN J/C to No. 10 CAN J/C	No. 10 CAN J/C to No. 13 CAN J/C	No. 13 CAN J/C to No. 2 CAN Junction Terminal
Bus 2	Airbag Sensor Assembly	U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0130	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	-	-
		U0151	-	-	-	-
		U0155	-	-	-	-
		U0163	-	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-	-
		U0101	-	-	-	-
		U0120	-	-	-	-
		U0129	-	-	-	-
		U0151	-	-	-	-
		U0155	-	-	-	-
		U023A	○	○	-	-
		U0327	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	ECM (for 2GR-FKS)	U010487	○	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-	-
		U110387	-	-	-	-
		U110487	○	-	-	-
	Engine Stop and Start ECU	U0100	-	-	-	-
		U0104	○	-	-	-
		U0121	-	-	-	-
		U0123	-	-	-	-
		U0126	-	-	-	-
		U0131	-	-	-	-
		U0132	○	-	-	-
		U0140	-	-	-	-
		U0151	-	-	-	-
		U0164	-	-	-	-
Bus 2	Power Steering ECU Assembly	U0100	-	-	-	-
		U0129	-	-	-	-
		U0130	-	-	-	-
		U0132	○	-	-	-
		U1103	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
		U1103	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-	-
		U0140	-	-	-	-
		U0155	-	-	-	-
		U1103	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-	-
	Combination Meter Assembly	U0100	-	-	-	-
		U0129	-	-	-	-
		U0130	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	-	-
		U0151	-	-	-	-
		U0163	-	-	-	-
		U0182	-	-	-	-
		U023A	○	○	-	-
		U1104	○	-	-	-
	Steering Sensor	-	-	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-	-
		U0122	-	-	-	-
		U0142	-	-	-	-
	Front Steering Control ECU	U0100	-	-	-	-
		U0101	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0131	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-	-
		U0124	-	-	-	-
		U0126	-	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0130	-	-	-	-
		U0131	-	-	-	-
		U0140	-	-	-	-
		U0155	-	-	-	-
		U0164	-	-	-	-
		U0233	○	○	○	-
		U1110	○	○	-	-
Bus 3	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
Bus 4	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-	-
	Absorber Control ECU	U0130	-	-	-	-
	Front Steering Control ECU	U0129	-	-	-	-
	Front Steering Control ECU	U0131	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0130	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	○	○	○	-
		U0125	○	○	○	-
		U0126	○	○	○	-
		U0129	○	○	○	-
		U0142	○	○	○	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	Clearance Warning ECU Assembly	U0101	○	○	-	-
	Clearance Warning ECU Assembly	U0155	○	○	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	○	-	-	-
		U0125	○	-	-	-
		U0126	○	-	-	-
		U0129	○	-	-	-
		U0235	-	○	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	○	-	-	-
		U0125	○	-	-	-
		U0126	○	-	-	-
		U0129	○	-	-	-
		U0235	-	○	-	-
		U023A	-	○	-	-
	Forward Recognition Camera	U0100	○	○	-	-
		U0101	○	○	-	-
		U0123	○	○	-	-
		U0126	○	○	-	-
		U0129	○	○	-	-
		U0130	○	○	-	-
		U0131	○	○	-	-
		U0142	○	○	-	-
		U0155	○	○	-	-
		U0235	-	-	-	-
		U1104	-	○	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-	-
Bus 5	Absorber Control ECU	U0100	○	-	-	-
		U0101	○	-	-	-
		U0122	○	-	-	-
		U0124	○	-	-	-
		U0126	○	-	-	-
		U1103	○	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-	-
		U0101	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-	-
		U0199	-	-	-	-
		U0200	-	-	-	-
		U0208	-	-	-	-
		U0265	-	-	-	-
		U1002	-	-	-	-
		U1115	-	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0130	-	-	-	-
		U0131	-	-	-	-
		U0140	-	-	-	-
		U0163	-	-	-	-
		U0233	○	○	○	-
		U1110	○	○	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-	-
	Front Power Seat Switch RH	-	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-	-

-			Trouble Mode (CAN bus lines short circuit or short to GND)
-			Bus 5
Output ECU		Output DTC	CANH to CANL	CANH Short to Ground	CANL Short to Ground
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
Bus 2	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	○	○	○
		U0327	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	○	○	○
	ECM (for 2GR-FKS)	U012287	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-
		U110387	-	-	-
		U110487	○	○	○
	Engine Stop and Start ECU	U0100	-	-	-
		U0104	○	○	○
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	-	-
		U0132	○	○	○
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0132	○	○	○
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
Bus 2	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	-	-	-
		U023A	○	○	○
		U1104	○	○	○
	Steering Sensor	-	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	-	-
		U0142	-	-	-
	Front Steering Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U0233	○	○	○
		U1110	○	○	○
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
Bus 4	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	Absorber Control ECU	U0130	-	-	-
	Front Steering Control ECU	U0129	-	-	-
	Front Steering Control ECU	U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0130	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0142	○	○	○
Bus 5	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	○	○	○
	Clearance Warning ECU Assembly	U0155	○	○	○
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0235	○	○	○
	Driving Support ECU Assembly (Pre-collision System)	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0235	○	○	○
		U023A	○	○	○
	Forward Recognition Camera	U0100	○	○	○
		U0101	○	○	○
		U0123	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0130	○	○	○
		U0131	○	○	○
		U0142	○	○	○
		U0155	○	○	○
		U0235	○	○	○
		U1104	○	○	○
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	○	○	○
		U0101	○	○	○
		U0122	○	○	○
		U0124	○	○	○
		U0126	○	○	○
		U1103	○	○	○
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-
		U0101	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-
		U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	-
Sub Bus 1	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	○	○	○
		U1110	○	○	○
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Front Power Seat Switch RH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

DTC COMBINATION TABLE (OPEN OR SHORT IN SUB BUS 1, PAST COMMUNICATION ERROR) (for RHD)

Regarding a past communication error of an ECU and sensor connected to sub bus 1 (in this case, normal is displayed when performing the CAN bus check, but communication DTCs are output), determine the part that had a malfunction based on DTCs output from the Main Body ECU (Multiplex Network Body ECU)*3.

Tech Tips

As gateway function equipped ECUs (sub bus monitor ECUs) monitor signals from all ECUs that are connected to sub buses, gateway function equipped ECUs can detect ECUs with a communication stop more accurately.
DTCs output from ECUs other than the Main Body ECU (Multiplex Network Body ECU)*3 (gateway function equipped ECU) are shown only as a reference.
Regarding a communication stop that is currently occurring in sub bus 1, the malfunctioning part can be confirmed easily by performing the CAN bus check using the GTS.
If an open occurs in just one of the wires of a CAN branch line, DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
○: DTC is output.
-: DTC is not output.
If an open occurs in just one of the lines of a CAN bus line, DTCs which are not related to malfunctioning parts may be output.
*1: DTC U0073 may be stored when communication is lost.
*2: DTC U1000 may be stored when communication is lost.
*3: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-			Trouble Mode (Open in CAN branch line(s))
-			Sub Bus 1
Output ECU		Output DTC	No. 1 Headlight ECU Sub-assembly LH Click here	Rear Television Camera Assembly Click here	Outer Mirror Control ECU Assembly (for Front Passenger Side) Click here
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	-	-	-
		U0327	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-
		U110387	-	-	-
		U110487	-	-	-
	Engine Stop and Start ECU	U0100	-	-	-
		U0104	-	-	-
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	-	-
		U0132	-	-	-
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
Bus 2	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0132	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	○	-	-
		U023A	-	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	-	-
		U0142	-	-	-
	Front Steering Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U0233	-	-	-
		U1110	-	-	-
Bus 3	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
Bus 4	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	Absorber Control ECU	U0130	-	-	-
	Front Steering Control ECU	U0129	-	-	-
	Front Steering Control ECU	U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0130	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
		U023A	-	-	-
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
Bus 5	Absorber Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0122	-	-	-
		U0124	-	-	-
		U0126	-	-	-
		U1103	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	○	-	-
		U0101	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U0142	○	-	-
		U0155	○	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	○	-	-
		U0199	-	-	-
		U0200	-	-	○
		U0208	-	-	-
		U0265	-	○	-
		U1002	-	-	-
		U1115	-	-	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	○	-
		U0126	-	○	-
		U0129	-	○	-
		U0130	-	○	-
		U0131	-	○	-
		U0140	-	○	-
		U0163	-	○	-
		U0233	-	○	-
		U1110	-	○	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	○
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Front Power Seat Switch RH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
	Multiplex Tilt and Telescopic ECU	U0208	-	-	-

-			Trouble Mode (Open in CAN branch line(s))
-			Sub Bus 1
Output ECU		Output DTC	Outer Mirror Control ECU Assembly (for Driver Side) Click here	Front Power Seat Switch RH Click here	Multiplex Tilt and Telescopic ECU Click here
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	-	-	-
		U0327	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-
		U110387	-	-	-
		U110487	-	-	-
	Engine Stop and Start ECU	U0100	-	-	-
		U0104	-	-	-
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	-	-
		U0132	-	-	-
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0132	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
Bus 2	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	-	-	-
		U023A	-	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	-	-
		U0142	-	-	-
	Front Steering Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
Bus 4	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	Absorber Control ECU	U0130	-	-	-
	Front Steering Control ECU	U0129	-	-	-
	Front Steering Control ECU	U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0130	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
Bus 5	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
		U023A	-	-	-
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0122	-	-	-
		U0124	-	-	-
		U0126	-	-	-
		U1103	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	-	-	-
		U0101	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	-	-	-
		U0199	○	-	-
		U0200	-	-	-
		U0208	-	○	-
		U0265	-	-	-
		U1002	-	-	-
		U1115	-	-	○
Sub Bus 1	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	○	-	-
	Front Power Seat Switch RH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	-	-	○
	Multiplex Tilt and Telescopic ECU	U0208	-	○	○

-			Trouble Mode (Open in CAN main bus line(s))
-			Sub Bus 1
Output ECU		Output DTC	Main Body ECU (Multiplex Network Body ECU)	No. 12 CAN J/C to No. 14 J/C	No. 14 J/C to No. 4 CAN J/C	No. 4 CAN J/C to No. 1 CAN Junction Terminal
Bus 2	Airbag Sensor Assembly	U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0130	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	-	-
		U0151	-	-	-	-
		U0155	-	-	-	-
		U0163	-	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-	-
		U0101	-	-	-	-
		U0120	-	-	-	-
		U0129	-	-	-	-
		U0151	-	-	-	-
		U0155	-	-	-	-
		U023A	-	-	-	-
		U0327	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-	-
		U110387	-	-	-	-
		U110487	-	-	-	-
Bus 2	Engine Stop and Start ECU	U0100	-	-	-	-
		U0104	-	-	-	-
		U0121	-	-	-	-
		U0123	-	-	-	-
		U0126	-	-	-	-
		U0131	-	-	-	-
		U0132	-	-	-	-
		U0140	-	-	-	-
		U0151	-	-	-	-
		U0164	-	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-	-
		U0129	-	-	-	-
		U0130	-	-	-	-
		U0132	-	-	-	-
		U1103	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
		U1103	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-	-
		U0140	-	-	-	-
		U0155	-	-	-	-
		U1103	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-	-
	Combination Meter Assembly	U0100	-	-	-	-
		U0129	-	-	-	-
		U0130	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	-	-
		U0151	-	-	-	-
		U0163	-	-	-	-
		U0182	-	-	-	-
		U023A	-	-	-	-
		U1104	-	-	-	-
	Steering Sensor	-	-	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-	-
		U0122	-	-	-	-
		U0142	-	-	-	-
	Front Steering Control ECU	U0100	-	-	-	-
		U0101	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0131	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-	-
		U0124	-	-	-	-
		U0126	-	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0130	-	-	-	-
		U0131	-	-	-	-
		U0140	-	-	-	-
		U0155	-	-	-	-
		U0164	-	-	-	-
		U0233	-	-	-	-
		U1110	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
Bus 4	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-	-
	Absorber Control ECU	U0130	-	-	-	-
	Front Steering Control ECU	U0129	-	-	-	-
	Front Steering Control ECU	U0131	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0130	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0142	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0235	-	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0235	-	-	-	-
		U023A	-	-	-	-
Bus 5	Forward Recognition Camera	U0100	-	-	-	-
		U0101	-	-	-	-
		U0123	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0130	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
		U0235	-	-	-	-
		U1104	-	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-	-
	Absorber Control ECU	U0100	-	-	-	-
		U0101	-	-	-	-
		U0122	-	-	-	-
		U0124	-	-	-	-
		U0126	-	-	-	-
		U1103	-	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	○	-	-	-
		U0101	○	-	-	-
		U0126	○	-	-	-
		U0129	○	-	-	-
		U0142	○	-	-	-
		U0155	○	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0182	○	-	-	-
		U0199	○	○	○	-
		U0200	○	-	-	-
		U0208	○	○	○	-
		U0265	○	○	-	-
		U1002	-	-	-	-
		U1115	○	○	○	-
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	○	○	-	-
		U0126	○	○	-	-
		U0129	○	○	-	-
		U0130	○	○	-	-
		U0131	○	○	-	-
		U0140	○	○	-	-
		U0163	○	○	-	-
		U0233	○	○	-	-
		U1110	○	○	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	○	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	○	○	○	-
	Front Power Seat Switch RH	-	-	-	-	-
Sub Bus 1	Multiplex Tilt and Telescopic ECU	U0142	○	○	○	-
Sub Bus 1	Multiplex Tilt and Telescopic ECU	U0208	-	-	-	-

-			Trouble Mode (CAN bus lines short circuit or short to GND)
-			Sub Bus 1
Output ECU		Output DTC	CANH to CANL	CANH Short to Ground	CANL Short to Ground
Bus 2	Airbag Sensor Assembly	U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0163	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*3	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U023A	-	-	-
		U0327	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	ECM (for 2GR-FKS)	U010487	-	-	-
	ECM (for 2GR-FKS)	U012287	-	-	-
	ECM (for 8AR-FTS)	U012287	-	-	-
		U110387	-	-	-
		U110487	-	-	-
	Engine Stop and Start ECU	U0100	-	-	-
		U0104	-	-	-
		U0121	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0131	-	-	-
		U0132	-	-	-
		U0140	-	-	-
		U0151	-	-	-
		U0164	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0132	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U1103	-	-	-
Bus 2	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U1103	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	○	○	○
		U023A	-	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Stereo Component Equalizer Assembly	U0100	-	-	-
		U0122	-	-	-
		U0142	-	-	-
	Front Steering Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
	Yaw Rate Sensor Assembly	-	-	-	-
Bus 3	Radio Receiver Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
Bus 4	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	Absorber Control ECU	U0130	-	-	-
Bus 4	Front Steering Control ECU	U0129	-	-	-
	Front Steering Control ECU	U0131	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0130	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Central Gateway ECU (Network Gateway ECU)*3	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0235	-	-	-
		U023A	-	-	-
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0130	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Absorber Control ECU	U0100	-	-	-
		U0101	-	-	-
		U0122	-	-	-
		U0124	-	-	-
		U0126	-	-	-
		U1103	-	-	-
Sub Bus 1	No. 1 Headlight ECU Sub-assembly LH12	U0100	○	○	○
		U0101	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0142	○	○	○
		U0155	○	○	○
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*3	U0182	○	○	○
		U0199	○	○	○
		U0200	○	○	○
		U0208	○	○	○
		U0265	○	○	○
		U1002	○	○	○
		U1115	○	○	○
	Rear Television Camera Assembly (w/ Parking Assist Monitor System w/o Parallel Parking Assist Function)*2	U0100	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0130	○	○	○
		U0131	○	○	○
		U0140	○	○	○
		U0163	○	○	○
		U0233	○	○	○
		U1110	○	○	○
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	○	○	○
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	○	○	○
	Front Power Seat Switch RH	-	-	-	-
	Multiplex Tilt and Telescopic ECU	U0142	○	○	○
	Multiplex Tilt and Telescopic ECU	U0208	○	○	○

CAN COMMUNICATION SYSTEM DTC COMBINATION TABLE