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.
  
  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 DTC Table by ECU.)
  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.
  
  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)

Regarding a past communication error of an ECU and sensor connected to the bus 2 (in this case, normal is displayed when performing the CAN bus check, but communication DTCs are output), the probable CAN bus line(s) 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.
Regarding an open in a CAN bus line(s) and a communication stop that is currently occurring, the malfunctioning part can be confirmed easily by performing the CAN bus check using the GTS because the ECU or sensor connected to the CAN bus line(s) does not respond (the ECU or sensor name will not be displayed on the screen).
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 18) first.

Click here
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 wires of a CAN branch line, even if the values in the following tables are "-", DTCs which are not related to malfunctioning parts may be output, or a message indicating a communication error may be displayed.
*1: DTC U0073 may be stored when communication is lost.
*2: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-			Trouble Mode
-			Open in CAN branch line(s)
Output ECU		Output DTC	Center Airbag Sensor Communication Stop Mode Click here	Air Conditioning Amplifier Communication Stop Mode Click here	AFS ECU Communication Stop Mode Click here	Main Body ECU Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	-	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	○	-	-
		U0131	-	○	-	-
		U0142	-	○	-	○
		U0155	-	○	-	-
	Headlight Leveling ECU Assembly*1	U0100	-	-	○	-
		U0129	-	-	○	-
		U0142	-	-	○	○
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-	○
		U0101	-	-	-	○
		U0120	-	-	-	○
		U0129	-	-	-	○
		U0151	○	-	-	○
		U0155	-	-	-	○
		U0164	-	○	-	○
		U023A	-	-	-	○
		U0327	-	-	-	○
		U1126	-	-	-	○
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-	-
	ECM	U0122 or U012287	-	-	-	-
	ECM	U1104 or U110487	-	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-	-
	4WD ECU Assembly*1	U0100	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-	-
		U0142	-	-	-	○
		U0155	-	-	-	-
Bus 2	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-	-
		U0140	-	-	-	○
		U0155	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-	-
	Combination Meter Assembly	U0100	-	-	-	-
		U0129	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	-	○
		U0151	○	-	-	-
		U0163	-	-	-	-
		U0182	-	-	○	-
		U023A	-	-	-	-
		U1104	-	-	-	-
	Steering Sensor	-	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-	-
		U0124	○	-	-	-
		U0126	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-	-
		U0125	○	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0142	-	-	-	○
	Television Camera Assembly	U0100	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0131	-	-	-	-
		U0140	-	-	-	○
		U0163	-	-	-	-
		U0233	-	-	-	-
		U1110	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-	-	-
		U0125	○	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-	-
		U0125	○	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U1104	-	-	-	-
Bus 5	Forward Recognition Camera	U0100	-	-	-	-
		U0101	-	-	-	-
		U0123	○	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	-	○
		U0155	-	-	-	-
		U0235	-	-	-	-
		U1104	-	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-	-
	Parking Assist ECU*1	U0100	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0140	-	-	-	○
		U0233	-	-	-	-
		U1110	-	-	-	-
Bus 3	Radio and Display Receiver Assembly	U0100	-	-	-	-
		U0140	-	-	-	○
		U0155	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-	-
	Telematics Transceiver	U0100	-	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)	U0199	-	-	-	-
		U0200	-	-	-	-
		U0208	-	-	-	-
		U0230	-	-	-	-
		U1002	-	-	-	-
	Multiplex Network Door ECU	U0101	-	-	-	○
		U0122	-	-	-	○
		U0142	-	-	-	-
		U0155	-	-	-	○
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-	-

-			Trouble Mode
-			Open in CAN branch line(s)
Output ECU		Output DTC	Central Gateway ECU Communication Stop Mode Click here	Clearance Warning ECU Communication Stop Mode Click here	Power Steering ECU Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	○
		U0142	-	-	-
		U0155	-	-	-
	Headlight Leveling ECU Assembly*1	U0100	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U023A	○	-	-
		U0327	-	-	-
		U1126	○	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	○	○	-
	Clearance Warning ECU Assembly	U0155	○	○	-
	ECM	U0122 or U012287	-	-	-
	ECM	U1104 or U110487	○	-	-
	Power Steering ECU Assembly	U0100	-	-	○
	Power Steering ECU Assembly	U0129	-	-	○
	4WD ECU Assembly*1	U0100	○	-	-
		U0126	○	-	-
		U0129	○	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
Bus 2	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	○
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	-	-	-
		U023A	○	-	-
		U1104	○	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	○	-	-
		U0125	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U0142	○	-	-
	Television Camera Assembly	U0100	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U0131	○	-	○
		U0140	○	-	-
		U0163	○	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	○	-	-
		U0125	○	-	-
		U0126	○	-	-
		U0129	○	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	○	-	-
		U0125	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U1104	○	-	-
	Forward Recognition Camera	U0100	○	-	-
		U0101	○	-	-
		U0123	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U0131	○	-	○
		U0142	○	-	-
		U0155	○	-	-
		U0235	-	-	-
		U1104	-	-	-
Bus 5	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Parking Assist ECU*1	U0100	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U0140	○	-	-
		U0233	-	-	-
		U1110	-	○	-
Bus 3	Radio and Display Receiver Assembly	U0100	-	-	-
		U0140	○	-	-
		U0155	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Telematics Transceiver	U0100	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)	U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0230	-	-	-
		U1002	-	-	-
	Multiplex Network Door ECU	U0101	-	-	-
		U0122	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-

-			Trouble Mode
-			Open in CAN branch line(s)
Output ECU		Output DTC	4WD Control ECU Communication Stop Mode Click here	Certification ECU Communication Stop Mode Click here	Steering Angle Sensor Communication Stop Mode Click here	Brake Actuator (Skid Control ECU) Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	-	-	-	-	-
Bus 2	Air Conditioning Amplifier Assembly	U0100	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
	Headlight Leveling ECU Assembly*1	U0100	-	-	-	-
		U0129	-	-	-	○
		U0142	-	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-	-
		U0101	-	-	-	-
		U0120	-	○	-	-
		U0129	-	-	-	○
		U0151	-	-	-	-
		U0155	-	-	-	-
		U0164	-	-	-	-
		U023A	-	-	-	-
		U0327	-	○	-	-
		U1126	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-	-
	ECM	U0122 or U012287	-	-	-	-
	ECM	U1104 or U110487	-	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-	○
	4WD ECU Assembly*1	U0100	○	-	-	-
		U0126	○	-	○	-
		U0129	○	-	-	○
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	○	-	-
		U0142	-	○	-	-
		U0155	-	○	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	○	-	-
		U0140	-	○	-	-
		U0155	-	○	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	○	-	-
	Combination Meter Assembly	U0100	-	-	-	-
		U0129	-	-	-	○
		U0131	-	-	-	-
		U0142	-	-	-	-
		U0151	-	-	-	-
		U0163	-	-	-	-
		U0182	-	-	-	-
		U023A	-	-	-	-
		U1104	-	-	-	-
	Steering Sensor	-	-	-	-	-
Bus 2	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-	○
		U0124	-	-	-	○
		U0126	-	-	○	○
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	○	-
		U0129	-	-	-	○
		U0142	-	-	-	-
	Television Camera Assembly	U0100	-	-	-	-
		U0126	-	-	○	-
		U0129	-	-	-	○
		U0131	-	-	-	-
		U0140	-	-	-	-
		U0163	-	-	-	-
		U0233	-	-	-	-
		U1110	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	○	-
		U0129	-	-	-	○
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	○	-
		U0129	-	-	-	○
		U1104	-	-	-	○
	Forward Recognition Camera	U0100	-	-	-	-
		U0101	-	-	-	-
		U0123	-	-	-	-
		U0126	-	-	○	-
		U0129	-	-	-	○
		U0131	-	-	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
		U0235	-	-	-	-
		U1104	-	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-	-
	Parking Assist ECU*1	U0100	-	-	-	-
		U0126	-	-	○	-
		U0129	-	-	-	○
		U0140	-	-	-	-
		U0233	-	-	-	-
		U1110	-	-	-	-
Bus 3	Radio and Display Receiver Assembly	U0100	-	-	-	-
		U0140	-	-	-	-
		U0155	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-	-
Bus 3	Telematics Transceiver	U0100	-	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)	U0199	-	-	-	-
		U0200	-	-	-	-
		U0208	-	-	-	-
		U0230	-	-	-	-
		U1002	-	-	-	-
	Multiplex Network Door ECU	U0101	-	-	-	-
		U0122	-	-	-	○
		U0142	-	-	-	-
		U0155	-	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-	-

-			Trouble Mode
-			Open in CAN main bus line(s)
Output ECU		Output DTC	Combination Meter ECU Communication Stop Mode Click here	No. 3 CAN Junction Connector to No. 4 CAN Junction Connector	ECM Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	○	○
		U0131	-	○	-
		U0142	-	○	-
		U0155	○	-	-
	Headlight Leveling ECU Assembly*1	U0100	-	-	○
		U0129	-	○	-
		U0142	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	○
		U0101	-	-	○
		U0120	-	○	-
		U0129	-	○	-
		U0151	-	○	-
		U0155	○	○	-
		U0164	-	○	-
		U023A	-	○	-
		U0327	-	○	-
		U1126	-	○	-
Bus 2	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	○	○
	Clearance Warning ECU Assembly	U0155	○	-	-
	ECM	U0122 or U012287	-	○	○
	ECM	U1104 or U110487	-	○	○
	Power Steering ECU Assembly	U0100	-	-	○
	Power Steering ECU Assembly	U0129	-	○	-
	4WD ECU Assembly*1	U0100	-	-	○
		U0126	-	-	-
		U0129	-	○	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	○	○
		U0142	-	○	-
		U0155	○	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	○	○
		U0140	-	○	-
		U0155	○	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	○	○
	Combination Meter Assembly	U0100	○	○	○
		U0129	○	-	-
		U0131	○	○	-
		U0142	○	○	-
		U0151	○	-	-
		U0163	○	-	-
		U0182	○	○	-
		U023A	○	-	-
		U1104	○	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	○	○
		U0124	-	-	-
		U0126	-	○	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	○	○
		U0125	-	○	-
		U0126	-	○	-
		U0129	-	-	-
		U0142	-	○	-
	Television Camera Assembly	U0100	-	○	○
		U0126	-	○	-
		U0129	-	-	-
		U0131	-	○	-
		U0140	-	○	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
Bus 5	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	○	○
		U0125	-	-	-
		U0126	-	○	-
		U0129	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	○	○
		U0125	-	-	-
		U0126	-	○	-
		U0129	-	-	-
		U1104	-	-	-
	Forward Recognition Camera	U0100	-	○	○
		U0101	-	○	○
		U0123	-	-	-
		U0126	-	○	-
		U0129	-	-	-
		U0131	-	○	-
		U0142	-	○	-
		U0155	○	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Parking Assist ECU*1	U0100	-	○	○
		U0126	-	○	-
		U0129	-	-	-
		U0140	-	○	-
		U0233	-	-	-
		U1110	-	-	-
Bus 3	Radio and Display Receiver Assembly	U0100	-	○	○
		U0140	-	○	-
		U0155	○	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Telematics Transceiver	U0100	-	○	○
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)	U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0230	-	-	-
		U1002	-	-	-
	Multiplex Network Door ECU	U0101	-	-	○
		U0122	-	○	-
		U0142	-	-	-
		U0155	-	○	○
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
Sub Bus 1	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
Sub Bus 1	Position Control ECU and Switch Assembly	-	-	-	-

-			Trouble Mode
-			CAN bus lines short circuit or short to GND
Output ECU		Output DTC	CANH to CANL	CANH Short to Ground	CANL Short to Ground
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	○	○	○
		U0131	○	○	○
		U0142	○	○	○
		U0155	○	○	○
	Headlight Leveling ECU Assembly*1	U0100	○	○	○
		U0129	○	○	○
		U0142	○	○	○
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	○	○	○
		U0101	○	○	○
		U0120	○	○	○
		U0129	○	○	○
		U0151	○	○	○
		U0155	○	○	○
		U0164	○	○	○
		U023A	○	○	○
		U0327	○	○	○
		U1126	○	○	○
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	○	○	○
	Clearance Warning ECU Assembly	U0155	○	○	○
	ECM	U0122 or U012287	○	○	○
	ECM	U1104 or U110487	○	○	○
	Power Steering ECU Assembly	U0100	○	○	○
	Power Steering ECU Assembly	U0129	○	○	○
	4WD ECU Assembly*1	U0100	○	○	○
		U0126	○	○	○
		U0129	○	○	○
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	○	○	○
		U0142	○	○	○
		U0155	○	○	○
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	○	○	○
		U0140	○	○	○
		U0155	○	○	○
Bus 2	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	○	○	○
	Combination Meter Assembly	U0100	○	○	○
		U0129	○	○	○
		U0131	○	○	○
		U0142	○	○	○
		U0151	○	○	○
		U0163	○	○	○
		U0182	○	○	○
		U023A	○	○	○
		U1104	○	○	○
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	○	○	○
		U0124	○	○	○
		U0126	○	○	○
Bus 5	Blind Spot Monitor Sensor LH	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0142	○	○	○
	Television Camera Assembly	U0100	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0131	○	○	○
		U0140	○	○	○
		U0163	-	-	-
		U0233	-	-	-
		U1110	○	○	○
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
	Driving Support ECU Assembly (Pre-collision System)	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U1104	○	○	○
	Forward Recognition Camera	U0100	○	○	○
		U0101	○	○	○
		U0123	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0131	○	○	○
		U0142	○	○	○
		U0155	○	○	○
		U0235	-	-	-
		U1104	-	-	-
Bus 5	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Parking Assist ECU*1	U0100	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0140	○	○	○
		U0233	-	-	-
		U1110	-	-	-
Bus 3	Radio and Display Receiver Assembly	U0100	○	○	○
		U0140	○	○	○
		U0155	○	○	○
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Telematics Transceiver	U0100	○	○	○
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)	U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0230	-	-	-
		U1002	-	-	-
	Multiplex Network Door ECU	U0101	○	○	○
		U0122	○	○	○
		U0142	-	-	-
		U0155	○	○	○
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-

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

Regarding a past communication error of an ECU and sensor connected to the bus 3 (in this case, normal is displayed when performing the CAN bus check, but communication DTCs are output), the probable CAN bus line(s) 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.
Regarding an open in a CAN bus line(s) and a communication stop that is currently occurring, the malfunctioning part can be confirmed easily by performing the CAN bus check using the GTS because the ECU or sensor connected to the CAN bus line(s) does not respond (the ECU or sensor name will not be displayed on the screen).
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 18) first.

Click here
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 wires of a CAN branch line, even if the values in the following tables are "-", DTCs which are not related to malfunctioning parts may be output, or a message indicating a communication error may be displayed.
*1: DTC U0073 may be stored when communication is lost.
*2: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-			Trouble Mode
-			Open in CAN branch line(s)
Output ECU		Output DTC	Radio Receiver Assembly Communication Stop Mode Click here	DCM Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-
		U0131	-	-
		U0142	-	-
		U0155	-	-
	Headlight Leveling ECU Assembly*1	U0100	-	-
		U0129	-	-
		U0142	-	-
Bus 2	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-
		U0101	-	-
		U0120	-	-
		U0129	-	-
		U0151	-	-
		U0155	-	-
		U0164	-	-
		U023A	-	-
		U0327	-	-
		U1126	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-
	Clearance Warning ECU Assembly	U0155	-	-
	ECM	U0122 or U012287	-	-
	ECM	U1104 or U110487	-	-
	Power Steering ECU Assembly	U0100	-	-
	Power Steering ECU Assembly	U0129	-	-
	4WD ECU Assembly*1	U0100	-	-
		U0126	-	-
		U0129	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-
		U0142	-	-
		U0155	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-
		U0140	-	-
		U0155	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-
	Combination Meter Assembly	U0100	-	-
		U0129	-	-
		U0131	-	-
		U0142	-	-
		U0151	-	-
		U0163	○	-
		U0182	-	-
		U023A	-	-
		U1104	-	-
	Steering Sensor	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-
		U0124	-	-
		U0126	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-
		U0125	-	-
		U0126	-	-
		U0129	-	-
		U0142	-	-
	Television Camera Assembly	U0100	-	-
		U0126	-	-
		U0129	-	-
		U0131	-	-
		U0140	-	-
		U0163	○	-
		U0233	-	-
		U1110	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-
		U0125	-	-
		U0126	-	-
		U0129	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-
		U0125	-	-
		U0126	-	-
		U0129	-	-
		U1104	-	-
	Forward Recognition Camera	U0100	-	-
		U0101	-	-
		U0123	-	-
		U0126	-	-
		U0129	-	-
		U0131	-	-
		U0142	-	-
		U0155	-	-
		U0235	-	-
		U1104	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-
	Parking Assist ECU*1	U0100	-	-
		U0126	-	-
		U0129	-	-
		U0140	-	-
		U0233	-	-
		U1110	-	-
Bus 3	Radio and Display Receiver Assembly	U0100	○	-
		U0140	○	-
		U0155	○	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-
	Telematics Transceiver	U0100	-	○
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)	U0199	-	-
		U0200	-	-
		U0208	-	-
		U0230	-	-
		U1002	-	-
	Multiplex Network Door ECU	U0101	-	-
		U0122	-	-
		U0142	-	-
		U0155	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-
	Position Control ECU and Switch Assembly	-	-	-

-			Trouble Mode
-			Open in CAN main bus line(s)
Output ECU		Output DTC	Central Gateway ECU (Network Gateway ECU) to No. 7 CAN Junction Connector	No. 7 CAN Junction Connector to Central Gateway ECU (Network Gateway ECU)
Bus 2	Airbag Sensor Assembly	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-
		U0131	-	-
		U0142	-	-
		U0155	-	-
	Headlight Leveling ECU Assembly*1	U0100	-	-
		U0129	-	-
		U0142	-	-
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-
		U0101	-	-
		U0120	-	-
		U0129	-	-
		U0151	-	-
		U0155	-	-
		U0164	-	-
		U023A	-	-
		U0327	-	-
		U1126	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-
	Clearance Warning ECU Assembly	U0155	-	-
	ECM	U0122 or U012287	-	-
	ECM	U1104 or U110487	-	-
Bus 2	Power Steering ECU Assembly	U0100	-	-
	Power Steering ECU Assembly	U0129	-	-
	4WD ECU Assembly*1	U0100	-	-
		U0126	-	-
		U0129	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-
		U0142	-	-
		U0155	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-
		U0140	-	-
		U0155	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-
	Combination Meter Assembly	U0100	-	-
		U0129	-	-
		U0131	-	-
		U0142	-	-
		U0151	-	-
		U0163	○	-
		U0182	-	-
		U023A	-	-
		U1104	-	-
	Steering Sensor	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-
		U0124	-	-
		U0126	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-
		U0125	-	-
		U0126	-	-
		U0129	-	-
		U0142	-	-
	Television Camera Assembly	U0100	-	-
		U0126	-	-
		U0129	-	-
		U0131	-	-
		U0140	-	-
		U0163	○	-
		U0233	-	-
		U1110	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-
		U0125	-	-
		U0126	-	-
		U0129	-	-
Bus 5	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-
		U0125	-	-
		U0126	-	-
		U0129	-	-
		U1104	-	-
	Forward Recognition Camera	U0100	-	-
		U0101	-	-
		U0123	-	-
		U0126	-	-
		U0129	-	-
		U0131	-	-
		U0142	-	-
		U0155	-	-
		U0235	-	-
		U1104	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-
	Parking Assist ECU*1	U0100	-	-
		U0126	-	-
		U0129	-	-
		U0140	-	-
		U0233	-	-
		U1110	-	-
Bus 3	Radio and Display Receiver Assembly	U0100	○	-
		U0140	○	-
		U0155	○	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-
	Telematics Transceiver	U0100	○	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)	U0199	-	-
		U0200	-	-
		U0208	-	-
		U0230	-	-
		U1002	-	-
	Multiplex Network Door ECU	U0101	-	-
		U0122	-	-
		U0142	-	-
		U0155	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-
	Position Control ECU and Switch Assembly	-	-	-

-			Trouble Mode
-			CAN bus lines short circuit or short to GND
Output ECU		Output DTC	CANH to CANL	CANH Short to Ground	CANL Short to Ground
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Headlight Leveling ECU Assembly*1	U0100	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1126	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	ECM	U0122 or U012287	-	-	-
	ECM	U1104 or U110487	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	4WD ECU Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
Bus 2	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	○	○	○
		U0182	-	-	-
		U023A	-	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Television Camera Assembly	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	○	○	○
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U1104	-	-	-
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
Bus 5	Parking Assist ECU*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0140	-	-	-
		U0233	-	-	-
		U1110	-	-	-
Bus 3	Radio and Display Receiver Assembly	U0100	○	○	○
		U0140	○	○	○
		U0155	○	○	○
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Telematics Transceiver	U0100	○	○	○
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)	U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0230	-	-	-
		U1002	-	-	-
	Multiplex Network Door ECU	U0101	-	-	-
		U0122	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-

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

Regarding a past communication error of an ECU and sensor connected to the bus 5 (in this case, normal is displayed when performing the CAN bus check, but communication DTCs are output), the probable CAN bus line(s) 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.
Regarding an open in a CAN bus line(s) and a communication stop that is currently occurring, the malfunctioning part can be confirmed easily by performing the CAN bus check using the GTS because the ECU or sensor connected to the CAN bus line(s) does not respond (the ECU or sensor name will not be displayed on the screen).
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 18) first.

Click here
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 wires of a CAN branch line, even if the values in the following tables are "-", DTCs which are not related to malfunctioning parts may be output, or a message indicating a communication error may be displayed.
*1: DTC U0073 may be stored when communication is lost.
*2: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-			Trouble Mode
-			Open in CAN branch line(s)
Output ECU		Output DTC	Blind Spot Monitor Sensor Communication Stop Mode Click here	Rear Television Camera Communication Stop Mode Click here	Driving Support ECU Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Headlight Leveling ECU Assembly*1	U0100	-	-	-
		U0129	-	-	-
		U0142	-	-	-
Bus 2	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1126	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	ECM	U0122 or U012287	-	-	-
	ECM	U1104 or U110487	-	-	○
	Power Steering ECU Assembly	U0100	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	4WD ECU Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	-	-	-
		U023A	-	-	-
		U1104	-	-	○
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	○	-	-
		U0125	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U0142	○	-	-
	Television Camera Assembly	U0100	-	○	-
		U0126	-	○	-
		U0129	-	○	-
		U0131	-	○	-
		U0140	-	○	-
		U0163	-	○	-
		U0233	-	○	-
		U1110	-	○	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-	○
		U0125	-	-	○
		U0126	-	-	○
		U0129	-	-	○
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	○
		U0125	-	-	○
		U0126	-	-	○
		U0129	-	-	○
		U1104	-	-	○
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	○
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Parking Assist ECU*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0140	-	-	-
		U0233	○	-	-
		U1110	-	-	-
Bus 3	Radio and Display Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Telematics Transceiver	U0100	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)	U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0230	-	-	-
		U1002	-	-	-
	Multiplex Network Door ECU	U0101	-	-	-
		U0122	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-

-			Trouble Mode
-			Open in CAN branch line(s)
Output ECU		Output DTC	Front Camera Module Communication Stop Mode Click here	Millimeter Wave Radar Sensor Communication Stop Mode Click here	Parking Assist ECU Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Headlight Leveling ECU Assembly*1	U0100	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U023A	○	-	-
		U0327	-	-	-
		U1126	-	-	○
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
Bus 2	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	ECM	U0122 or U012287	-	-	-
	ECM	U1104 or U110487	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	4WD ECU Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	-	-	-
		U023A	○	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Television Camera Assembly	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
Bus 5	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U1104	-	-	-
	Forward Recognition Camera	U0100	○	-	-
		U0101	○	-	-
		U0123	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U0131	○	-	-
		U0142	○	-	-
		U0155	○	-	-
		U0235	○	○	-
		U1104	○	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Parking Assist ECU*1	U0100	-	-	○
		U0126	-	-	○
		U0129	-	-	○
		U0140	-	-	○
		U0233	-	-	○
		U1110	-	-	○
Bus 3	Radio and Display Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Telematics Transceiver	U0100	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)	U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0230	-	-	-
		U1002	-	-	-
	Multiplex Network Door ECU	U0101	-	-	-
		U0122	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-

-			Trouble Mode
-			Open in CAN main bus line(s)
Output ECU		Output DTC	Central Gateway ECU (Network Gateway ECU)	No. 1 CAN Junction Connector to No. 2 CAN Junction Connector	No. 2 CAN Junction Connector to CAN Junction Terminal
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Headlight Leveling ECU Assembly*1	U0100	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U023A	○	-	-
		U0327	-	-	-
		U1126	○	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	ECM	U0122 or U012287	-	-	-
	ECM	U1104 or U110487	○	-	-
	Power Steering ECU Assembly	U0100	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	4WD ECU Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
Bus 2	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	-	-	-
		U023A	○	-	-
		U1104	○	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	○	○	-
		U0125	○	○	-
		U0126	○	○	-
		U0129	○	○	-
		U0142	○	○	-
	Television Camera Assembly	U0100	○	○	-
		U0126	○	○	-
		U0129	○	○	-
		U0131	○	○	-
		U0140	○	○	-
		U0163	○	○	-
		U0233	-	-	-
		U1110	○	○	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	○	-	-
		U0125	○	-	-
		U0126	○	-	-
		U0129	○	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	○	-	-
		U0125	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U1104	○	-	-
	Forward Recognition Camera	U0100	○	-	-
		U0101	○	-	-
		U0123	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U0131	○	-	-
		U0142	○	-	-
		U0155	○	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
Bus 5	Parking Assist ECU*1	U0100	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U0140	○	-	-
		U0233	-	○	-
		U1110	○	-	-
Bus 3	Radio and Display Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Telematics Transceiver	U0100	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)	U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0230	-	-	-
		U1002	-	-	-
	Multiplex Network Door ECU	U0101	-	-	-
		U0122	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-

-			Trouble Mode
-			CAN bus lines short circuit or short to GND
Output ECU		Output DTC	CANH to CANL	CANH Short to Ground	CANL Short to Ground
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Headlight Leveling ECU Assembly*1	U0100	-	-	-
		U0129	-	-	-
		U0142	-	-	-
Bus 2	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U023A	○	○	○
		U0327	-	-	-
		U1126	○	○	○
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	○	○	○
	Clearance Warning ECU Assembly	U0155	○	○	○
	ECM	U0122 or U012287	-	-	-
	ECM	U1104 or U110487	○	○	○
	Power Steering ECU Assembly	U0100	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	4WD ECU Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	○	○	○
		U023A	○	○	○
		U1104	○	○	○
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0142	○	○	○
	Television Camera Assembly	U0100	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0131	○	○	○
		U0140	○	○	○
		U0163	○	○	○
		U0233	○	○	○
		U1110	○	○	○
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
	Driving Support ECU Assembly (Pre-collision System)	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U1104	○	○	○
	Forward Recognition Camera	U0100	○	○	○
		U0101	○	○	○
		U0123	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0131	○	○	○
		U0142	○	○	○
		U0155	○	○	○
		U0235	○	○	○
		U1104	○	○	○
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Parking Assist ECU*1	U0100	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0140	○	○	○
		U0233	○	○	○
		U1110	○	○	○
Bus 3	Radio and Display Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Telematics Transceiver	U0100	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)	U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0230	-	-	-
		U1002	-	-	-
	Multiplex Network Door ECU	U0101	-	-	-
		U0122	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-

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).

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) (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: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-			Trouble Mode
-			Open in CAN branch line(s)
Output ECU		Output DTC	Outer Mirror Control ECU Assembly (for Driver Side) Click here	Outer Mirror Control ECU Assembly (for Front Passenger Side) Click here	Position Control ECU and Switch Assembly Click here
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Headlight Leveling ECU Assembly*1	U0100	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1126	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	ECM	U0122 or U012287	-	-	-
	ECM	U1104 or U110487	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	4WD ECU Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
Bus 2	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	-	-	-
		U023A	-	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Television Camera Assembly	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U1104	-	-	-
Bus 5	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Parking Assist ECU*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0140	-	-	-
		U0233	-	-	-
		U1110	-	-	-
Bus 3	Radio and Display Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Telematics Transceiver	U0100	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)	U0199	-	○	-
		U0200	○	-	-
		U0208	-	-	○
		U0230	-	-	-
		U1002	-	-	-
	Multiplex Network Door ECU	U0101	-	-	-
		U0122	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	○	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	○	-
	Position Control ECU and Switch Assembly	-	-	-	-

-			Trouble Mode
-			Open in CAN main bus line(s)
Output ECU		Output DTC	Main Body ECU (Multiplex Network Body ECU) Click here	No. 5 CAN Junction Connector to No. 6 CAN Junction Connector	Multiplex Network Door ECU Click here
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Headlight Leveling ECU Assembly*1	U0100	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1126	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	ECM	U0122 or U012287	-	-	-
	ECM	U1104 or U110487	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	4WD ECU Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
Bus 2	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	-	-	-
		U023A	-	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Television Camera Assembly	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U1104	-	-	-
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
Bus 5	Parking Assist ECU*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0140	-	-	-
		U0233	-	-	-
		U1110	-	-	-
Bus 3	Radio and Display Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Telematics Transceiver	U0100	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)	U0199	○	-	-
		U0200	○	○	-
		U0208	○	○	-
		U0230	○	○	○
		U1002	-	-	-
	Multiplex Network Door ECU	U0101	○	○	○
		U0122	○	○	○
		U0142	○	○	○
		U0155	○	○	○
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	○	○	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	○	-	-
	Position Control ECU and Switch Assembly	-	-	-	-

-			Trouble Mode
-			CAN bus lines short circuit or short to GND
Output ECU		Output DTC	CANH to CANL	CANH Short to Ground	CANL Short to Ground
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Headlight Leveling ECU Assembly*1	U0100	-	-	-
		U0129	-	-	-
		U0142	-	-	-
Bus 2	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1126	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	ECM	U0122 or U012287	-	-	-
	ECM	U1104 or U110487	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	4WD ECU Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U0182	-	-	-
		U023A	-	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Television Camera Assembly	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U1104	-	-	-
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Parking Assist ECU*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0140	-	-	-
		U0233	-	-	-
		U1110	-	-	-
Bus 3	Radio and Display Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Telematics Transceiver	U0100	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)	U0199	○	○	○
		U0200	○	○	○
		U0208	○	○	○
		U0230	○	○	○
		U1002	○	○	○
	Multiplex Network Door ECU	U0101	○	○	○
		U0122	○	○	○
		U0142	○	○	○
		U0155	○	○	○
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	○	○	○
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	○	○	○
	Position Control ECU and Switch Assembly	-	-	-	-

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

Regarding a past communication error of an ECU and sensor connected to the bus 2 (in this case, normal is displayed when performing the CAN bus check, but communication DTCs are output), the probable CAN bus line(s) 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.
Regarding an open in a CAN bus line(s) and a communication stop that is currently occurring, the malfunctioning part can be confirmed easily by performing the CAN bus check using the GTS because the ECU or sensor connected to the CAN bus line(s) does not respond (the ECU or sensor name will not be displayed on the screen).
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 18) first.

Click here
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 wires of a CAN branch line, even if the values in the following tables are "-", DTCs which are not related to malfunctioning parts may be output, or a message indicating a communication error may be displayed.
*1: DTC U0073 may be stored when communication is lost.
*2: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-			Trouble Mode
-			Open in CAN branch line(s)
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	-	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	○	-	-
		U0131	-	○	-	-
		U0142	-	○	○	-
		U0155	-	○	-	-
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	○	-
		U0101	-	-	○	-
		U0120	-	-	○	-
		U0129	-	-	○	-
		U0151	○	-	○	-
		U0155	-	-	○	-
		U0164	-	○	○	-
		U023A	-	-	○	○
		U0327	-	-	○	-
		U1126	-	-	○	○
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-	○
	Clearance Warning ECU Assembly	U0155	-	-	-	○
	ECM	U012287	-	-	-	-
	ECM	U110487	-	-	-	○
	Power Steering ECU Assembly	U0100	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-	-
Bus 2	4WD ECU Assembly*1	U0100	-	-	-	○
		U0126	-	-	-	○
		U0129	-	-	-	○
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-	-
		U0142	-	-	○	-
		U0155	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-	-
		U0140	-	-	○	-
		U0155	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-	-
	Combination Meter Assembly	U0100	-	-	-	-
		U0129	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	○	-
		U0151	○	-	-	-
		U0163	-	-	-	-
		U023A	-	-	-	○
		U1104	-	-	-	○
	Steering Sensor	-	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-	-
		U0124	○	-	-	-
		U0126	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-	○
		U0125	○	-	-	○
		U0126	-	-	-	○
		U0129	-	-	-	○
		U0142	-	-	○	○
	Television Camera Assembly	U0100	-	-	-	○
		U0126	-	-	-	○
		U0129	-	-	-	○
		U0131	-	-	-	○
		U0140	-	-	○	○
		U0163	-	-	-	○
		U0233	-	-	-	-
		U1110	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-	-	○
		U0125	○	-	-	○
		U0126	-	-	-	○
		U0129	-	-	-	○
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-	○
		U0125	○	-	-	○
		U0126	-	-	-	○
		U0129	-	-	-	○
		U1104	-	-	-	○
Bus 5	Forward Recognition Camera	U0100	-	-	-	○
		U0101	-	-	-	○
		U0123	○	-	-	○
		U0126	-	-	-	○
		U0129	-	-	-	○
		U0131	-	-	-	○
		U0142	-	-	○	○
		U0155	-	-	-	○
		U0235	-	-	-	-
		U1104	-	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-	-
	Parking Assist ECU*1	U0100	-	-	-	○
		U0126	-	-	-	○
		U0129	-	-	-	○
		U0140	-	-	○	○
		U0233	-	-	-	-
		U1110	-	-	-	-
Bus 3	Navigation Receiver Assembly	U0100	-	-	-	-
		U0140	-	-	○	○
		U0155	-	-	-	-
	Radio and Display Receiver Assembly	U0100	-	-	-	-
		U0140	-	-	○	○
		U0155	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*2	U0199	-	-	-	-
		U0200	-	-	-	-
		U0208	-	-	-	-
		U0230	-	-	-	-
		U1002	-	-	-	-
	Multiplex Network Door ECU	U0101	-	-	○	-
		U0122	-	-	○	-
		U0142	-	-	-	-
		U0155	-	-	○	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-	-

-			Trouble Mode
-			Open in CAN branch line(s)
Output ECU		Output DTC	Clearance Warning ECU Communication Stop Mode Click here	Power Steering ECU Communication Stop Mode Click here	4WD Control ECU Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	○	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1126	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	○	-	-
	Clearance Warning ECU Assembly	U0155	○	-	-
	ECM	U012287	-	-	-
	ECM	U110487	-	-	-
	Power Steering ECU Assembly	U0100	-	○	-
	Power Steering ECU Assembly	U0129	-	○	-
	4WD ECU Assembly*1	U0100	-	-	○
		U0126	-	-	○
		U0129	-	-	○
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
Bus 2	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	○	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U023A	-	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Television Camera Assembly	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	○	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U1104	-	-	-
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	○	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
Bus 5	Parking Assist ECU*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0140	-	-	-
		U0233	-	-	-
		U1110	○	-	-
Bus 3	Navigation Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Radio and Display Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*2	U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0230	-	-	-
		U1002	-	-	-
	Multiplex Network Door ECU	U0101	-	-	-
		U0122	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-

-			Trouble Mode
-			Open in CAN branch line(s)
Output ECU		Output DTC	Certification ECU Communication Stop Mode Click here	Steering Angle Sensor Communication Stop Mode Click here	Brake Actuator (Skid Control ECU) Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
Bus 2	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-
		U0101	-	-	-
		U0120	○	-	-
		U0129	-	-	○
		U0151	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U023A	-	-	-
		U0327	○	-	-
		U1126	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	ECM	U012287	-	-	-
	ECM	U110487	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
	Power Steering ECU Assembly	U0129	-	-	○
	4WD ECU Assembly*1	U0100	-	-	-
		U0126	-	○	-
		U0129	-	-	○
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	○	-	-
		U0142	○	-	-
		U0155	○	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	○	-	-
		U0140	○	-	-
		U0155	○	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	○	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	○
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U023A	-	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	○
		U0124	-	-	○
		U0126	-	○	○
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	○	-
		U0129	-	-	○
		U0142	-	-	-
Bus 5	Television Camera Assembly	U0100	-	-	-
		U0126	-	○	-
		U0129	-	-	○
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	○	-
		U0129	-	-	○
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	○	-
		U0129	-	-	○
		U1104	-	-	○
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	○	-
		U0129	-	-	○
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Parking Assist ECU*1	U0100	-	-	-
		U0126	-	○	-
		U0129	-	-	○
		U0140	-	-	-
		U0233	-	-	-
		U1110	-	-	-
Bus 3	Navigation Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Radio and Display Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*2	U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0230	-	-	-
		U1002	-	-	-
Sub Bus 1	Multiplex Network Door ECU	U0101	-	-	-
		U0122	-	-	○
		U0142	-	-	-
		U0155	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-

-			Trouble Mode
-			Open in CAN main bus line(s)
Output ECU		Output DTC	Combination Meter ECU Communication Stop Mode Click here	No. 3 CAN Junction Connector to No. 4 CAN Junction Connector	ECM Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	○
		U0131	-	○	-
		U0142	-	-	-
		U0155	○	○	-
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	○
		U0101	-	-	○
		U0120	-	-	-
		U0129	-	○	-
		U0151	-	-	-
		U0155	○	○	-
		U0164	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1126	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	○
	Clearance Warning ECU Assembly	U0155	○	○	-
	ECM	U012287	-	○	○
	ECM	U110487	-	-	○
	Power Steering ECU Assembly	U0100	-	○	○
	Power Steering ECU Assembly	U0129	-	-	-
	4WD ECU Assembly*1	U0100	-	-	○
		U0126	-	-	-
		U0129	-	○	-
Bus 2	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	○
		U0142	-	-	-
		U0155	○	○	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	○
		U0140	-	-	-
		U0155	○	○	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	○
	Combination Meter Assembly	U0100	○	○	○
		U0129	○	-	-
		U0131	○	-	-
		U0142	○	○	-
		U0151	○	○	-
		U0163	○	○	-
		U023A	○	○	-
		U1104	○	○	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	○	○
		U0124	-	○	-
		U0126	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	○
		U0125	-	-	-
		U0126	-	○	-
		U0129	-	○	-
		U0142	-	-	-
	Television Camera Assembly	U0100	-	-	○
		U0126	-	○	-
		U0129	-	○	-
		U0131	-	○	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-	○
		U0125	-	-	-
		U0126	-	○	-
		U0129	-	○	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	○
		U0125	-	-	-
		U0126	-	○	-
		U0129	-	○	-
		U1104	-	○	-
Bus 5	Forward Recognition Camera	U0100	-	-	○
		U0101	-	-	○
		U0123	-	-	-
		U0126	-	○	-
		U0129	-	○	-
		U0131	-	○	-
		U0142	-	-	-
		U0155	○	○	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Parking Assist ECU*1	U0100	-	-	○
		U0126	-	○	-
		U0129	-	○	-
		U0140	-	-	-
		U0233	-	-	○
		U1110	-	-	-
Bus 3	Navigation Receiver Assembly	U0100	-	-	○
		U0140	-	-	-
		U0155	○	○	-
	Radio and Display Receiver Assembly	U0100	-	-	○
		U0140	-	-	-
		U0155	○	○	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*2	U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0230	-	-	-
		U1002	-	-	-
	Multiplex Network Door ECU	U0101	-	-	○
		U0122	-	○	-
		U0142	-	-	-
		U0155	○	○	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-

-			Trouble Mode
-			CAN bus lines short circuit or short to GND
Output ECU		Output DTC	CANH to CANL	CANH Short to Ground	CANL Short to Ground
Bus 2	Airbag Sensor Assembly	-	-	-	-
Bus 2	Air Conditioning Amplifier Assembly	U0100	○	○	○
		U0131	○	○	○
		U0142	○	○	○
		U0155	○	○	○
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	○	○	○
		U0101	○	○	○
		U0120	○	○	○
		U0129	○	○	○
		U0151	○	○	○
		U0155	○	○	○
		U0164	○	○	○
		U023A	○	○	○
		U0327	○	○	○
		U1126	○	○	○
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	○	○	○
	Clearance Warning ECU Assembly	U0155	○	○	○
	ECM	U012287	○	○	○
	ECM	U110487	○	○	○
	Power Steering ECU Assembly	U0100	○	○	○
	Power Steering ECU Assembly	U0129	○	○	○
	4WD ECU Assembly*1	U0100	○	○	○
		U0126	○	○	○
		U0129	○	○	○
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	○	○	○
		U0142	○	○	○
		U0155	○	○	○
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	○	○	○
		U0140	○	○	○
		U0155	○	○	○
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	○	○	○
	Combination Meter Assembly	U0100	○	○	○
		U0129	○	○	○
		U0131	○	○	○
		U0142	○	○	○
		U0151	○	○	○
		U0163	○	○	○
		U023A	○	○	○
		U1104	○	○	○
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	○	○	○
		U0124	○	○	○
		U0126	○	○	○
Bus 5	Blind Spot Monitor Sensor LH	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0142	○	○	○
	Television Camera Assembly	U0100	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0131	○	○	○
		U0140	○	○	○
		U0163	-	-	-
		U0233	-	-	-
		U1110	○	○	○
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
	Driving Support ECU Assembly (Pre-collision System)	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U1104	○	○	○
	Forward Recognition Camera	U0100	○	○	○
		U0101	○	○	○
		U0123	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0131	○	○	○
		U0142	○	○	○
		U0155	○	○	○
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Parking Assist ECU*1	U0100	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0140	○	○	○
		U0233	-	-	-
		U1110	-	-	-
Bus 3	Navigation Receiver Assembly	U0100	○	○	○
		U0140	○	○	○
		U0155	○	○	○
	Radio and Display Receiver Assembly	U0100	○	○	○
		U0140	○	○	○
		U0155	○	○	○
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*2	U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0230	-	-	-
		U1002	-	-	-
	Multiplex Network Door ECU	U0101	○	○	○
		U0122	○	○	○
		U0142	-	-	-
		U0155	○	○	○
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-

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

Regarding a past communication error of an ECU and sensor connected to the bus 3 (in this case, normal is displayed when performing the CAN bus check, but communication DTCs are output), the probable CAN bus line(s) 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.
Regarding an open in a CAN bus line(s) and a communication stop that is currently occurring, the malfunctioning part can be confirmed easily by performing the CAN bus check using the GTS because the ECU or sensor connected to the CAN bus line(s) does not respond (the ECU or sensor name will not be displayed on the screen).
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 18) first.

Click here
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 wires of a CAN branch line, even if the values in the following tables are "-", DTCs which are not related to malfunctioning parts may be output, or a message indicating a communication error may be displayed.
*1: DTC U0073 may be stored when communication is lost.
*2: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-			Trouble Mode
-			Open in CAN branch line(s)		Open in CAN main bus line(s)
Output ECU		Output DTC	Radio Receiver Assembly Communication Stop Mode Click here	Navigation Receiver Assembly Communication Stop Mode Click here	Central Gateway ECU (Network Gateway ECU) to No. 7 CAN Junction Connector	No. 7 CAN Junction Connector to Central Gateway ECU (Network Gateway ECU)
Bus 2	Airbag Sensor Assembly	-	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-	-
		U0101	-	-	-	-
		U0120	-	-	-	-
		U0129	-	-	-	-
		U0151	-	-	-	-
		U0155	-	-	-	-
		U0164	-	-	-	-
		U023A	-	-	-	-
		U0327	-	-	-	-
		U1126	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-	-
	ECM	U012287	-	-	-	-
	ECM	U110487	-	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-	-
Bus 2	4WD ECU Assembly*1	U0100	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-	-
		U0140	-	-	-	-
		U0155	-	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-	-
	Combination Meter Assembly	U0100	-	-	-	-
		U0129	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	-	-
		U0151	-	-	-	-
		U0163	○	○	-	-
		U023A	-	-	-	-
		U1104	-	-	-	-
	Steering Sensor	-	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-	-
		U0124	-	-	-	-
		U0126	-	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0142	-	-	-	-
	Television Camera Assembly	U0100	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0131	-	-	-	-
		U0140	-	-	-	-
		U0163	○	○	○	-
		U0233	-	-	-	-
		U1110	-	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-	-
		U0125	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U1104	-	-	-	-
Bus 5	Forward Recognition Camera	U0100	-	-	-	-
		U0101	-	-	-	-
		U0123	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0131	-	-	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
		U0235	-	-	-	-
		U1104	-	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-	-
	Parking Assist ECU*1	U0100	-	-	-	-
		U0126	-	-	-	-
		U0129	-	-	-	-
		U0140	-	-	-	-
		U0233	-	-	-	-
		U1110	-	-	-	-
Bus 3	Navigation Receiver Assembly	U0100	○	○	○	-
		U0140	○	○	○	-
		U0155	○	○	○	-
	Radio and Display Receiver Assembly	U0100	○	○	○	-
		U0140	○	○	○	-
		U0155	○	○	○	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*2	U0199	-	-	-	-
		U0200	-	-	-	-
		U0208	-	-	-	-
		U0230	-	-	-	-
		U1002	-	-	-	-
	Multiplex Network Door ECU	U0101	-	-	-	-
		U0122	-	-	-	-
		U0142	-	-	-	-
		U0155	-	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-	-

-			Trouble Mode
-			CAN bus lines short circuit or short to GND
Output ECU		Output DTC	CANH to CANL	CANH Short to Ground	CANL Short to Ground
Bus 2	Airbag Sensor Assembly	-	-	-	-
Bus 2	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1126	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	ECM	U012287	-	-	-
	ECM	U110487	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	4WD ECU Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	○	○	○
		U023A	-	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Television Camera Assembly	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	○	○	○
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U1104	-	-	-
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Parking Assist ECU*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0140	-	-	-
		U0233	-	-	-
		U1110	-	-	-
Bus 3	Navigation Receiver Assembly	U0100	○	○	○
		U0140	○	○	○
		U0155	○	○	○
	Radio and Display Receiver Assembly	U0100	○	○	○
		U0140	○	○	○
		U0155	○	○	○
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*2	U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0230	-	-	-
		U1002	-	-	-
	Multiplex Network Door ECU	U0101	-	-	-
		U0122	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-

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

Regarding a past communication error of an ECU and sensor connected to the bus 5 (in this case, normal is displayed when performing the CAN bus check, but communication DTCs are output), the probable CAN bus line(s) 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.
Regarding an open in a CAN bus line(s) and a communication stop that is currently occurring, the malfunctioning part can be confirmed easily by performing the CAN bus check using the GTS because the ECU or sensor connected to the CAN bus line(s) does not respond (the ECU or sensor name will not be displayed on the screen).
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 18) first.

Click here
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 wires of a CAN branch line, even if the values in the following tables are "-", DTCs which are not related to malfunctioning parts may be output, or a message indicating a communication error may be displayed.
*1: DTC U0073 may be stored when communication is lost.
*2: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-			Trouble Mode
-			Open in CAN branch line(s)
Output ECU		Output DTC	Blind Spot Monitor Sensor Communication Stop Mode Click here	Rear Television Camera Communication Stop Mode Click here	Driving Support ECU Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1126	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	ECM	U012287	-	-	-
	ECM	U110487	-	-	○
	Power Steering ECU Assembly	U0100	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	4WD ECU Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
Bus 2	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U023A	-	-	-
		U1104	-	-	○
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	○	-	-
		U0125	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U0142	○	-	-
	Television Camera Assembly	U0100	-	○	-
		U0126	-	○	-
		U0129	-	○	-
		U0131	-	○	-
		U0140	-	○	-
		U0163	-	○	-
		U0233	-	○	-
		U1110	-	○	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-	○
		U0125	-	-	○
		U0126	-	-	○
		U0129	-	-	○
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	○
		U0125	-	-	○
		U0126	-	-	○
		U0129	-	-	○
		U1104	-	-	○
Bus 5	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	○
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Parking Assist ECU*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0140	-	-	-
		U0233	○	-	-
		U1110	-	-	-
Bus 3	Navigation Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Radio and Display Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*2	U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0230	-	-	-
		U1002	-	-	-
	Multiplex Network Door ECU	U0101	-	-	-
		U0122	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-

-			Trouble Mode
-			Open in CAN branch line(s)
Output ECU		Output DTC	Front Camera Module Communication Stop Mode Click here	Millimeter Wave Radar Sensor Communication Stop Mode Click here	Parking Assist ECU Communication Stop Mode Click here
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1126	-	-	○
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	ECM	U012287	-	-	-
	ECM	U110487	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	4WD ECU Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
Bus 2	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U023A	○	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Television Camera Assembly	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U1104	-	-	-
	Forward Recognition Camera	U0100	○	-	-
		U0101	○	-	-
		U0123	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U0131	○	-	-
		U0142	○	-	-
		U0155	○	-	-
		U0235	○	○	-
		U1104	○	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
Bus 5	Parking Assist ECU*1	U0100	-	-	○
		U0126	-	-	○
		U0129	-	-	○
		U0140	-	-	○
		U0233	-	-	○
		U1110	-	-	○
Bus 3	Navigation Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Radio and Display Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*2	U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0230	-	-	-
		U1002	-	-	-
	Multiplex Network Door ECU	U0101	-	-	-
		U0122	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-

-			Trouble Mode
-			Open in CAN main bus line(s)
Output ECU		Output DTC	Central Gateway ECU (Network Gateway ECU)	No. 1 CAN Junction Connector to No. 2 CAN Junction Connector	No. 2 CAN Junction Connector to CAN Junction Terminal
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
Bus 2	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U023A	○	-	-
		U0327	-	-	-
		U1126	○	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	ECM	U012287	-	-	-
	ECM	U110487	○	-	-
	Power Steering ECU Assembly	U0100	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	4WD ECU Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U023A	○	-	-
		U1104	○	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	○	○	-
		U0125	○	○	-
		U0126	○	○	-
		U0129	○	○	-
		U0142	○	○	-
Bus 5	Television Camera Assembly	U0100	○	○	-
		U0126	○	○	-
		U0129	○	○	-
		U0131	○	○	-
		U0140	○	○	-
		U0163	○	○	-
		U0233	-	-	-
		U1110	○	○	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	○	-	-
		U0125	○	-	-
		U0126	○	-	-
		U0129	○	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	○	-	-
		U0125	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U1104	○	-	-
	Forward Recognition Camera	U0100	○	-	-
		U0101	○	-	-
		U0123	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U0131	○	-	-
		U0142	○	-	-
		U0155	○	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Parking Assist ECU*1	U0100	○	-	-
		U0126	○	-	-
		U0129	○	-	-
		U0140	○	-	-
		U0233	-	○	-
		U1110	○	-	-
Bus 3	Navigation Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Radio and Display Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*2	U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0230	-	-	-
		U1002	-	-	-
Sub Bus 1	Multiplex Network Door ECU	U0101	-	-	-
		U0122	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-

-			Trouble Mode
-			CAN bus lines short circuit or short to GND
Output ECU		Output DTC	CANH to CANL	CANH Short to Ground	CANL Short to Ground
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U023A	○	○	○
		U0327	-	-	-
		U1126	○	○	○
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	○	○	○
	Clearance Warning ECU Assembly	U0155	○	○	○
	ECM	U012287	-	-	-
	ECM	U110487	○	○	○
	Power Steering ECU Assembly	U0100	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	4WD ECU Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
Bus 2	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U023A	○	○	○
		U1104	○	○	○
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0142	○	○	○
	Television Camera Assembly	U0100	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0131	○	○	○
		U0140	○	○	○
		U0163	○	○	○
		U0233	○	○	○
		U1110	○	○	○
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
	Driving Support ECU Assembly (Pre-collision System)	U0100	○	○	○
		U0125	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U1104	○	○	○
Bus 5	Forward Recognition Camera	U0100	○	○	○
		U0101	○	○	○
		U0123	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0131	○	○	○
		U0142	○	○	○
		U0155	○	○	○
		U0235	○	○	○
		U1104	○	○	○
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Parking Assist ECU*1	U0100	○	○	○
		U0126	○	○	○
		U0129	○	○	○
		U0140	○	○	○
		U0233	○	○	○
		U1110	○	○	○
Bus 3	Navigation Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Radio and Display Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*2	U0199	-	-	-
		U0200	-	-	-
		U0208	-	-	-
		U0230	-	-	-
		U1002	-	-	-
	Multiplex Network Door ECU	U0101	-	-	-
		U0122	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
	Position Control ECU and Switch Assembly	-	-	-	-

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).

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) (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: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-			Trouble Mode
-			Open in CAN branch line(s)
Output ECU		Output DTC	Outer Mirror Control ECU Assembly (for Front Passenger Side) Click here	Outer Mirror Control ECU Assembly (for Driver Side) Click here	Position Control ECU and Switch Assembly Click here
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
Bus 2	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1126	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	ECM	U012287	-	-	-
	ECM	U110487	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	4WD ECU Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U023A	-	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
Bus 5	Television Camera Assembly	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U1104	-	-	-
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Parking Assist ECU*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0140	-	-	-
		U0233	-	-	-
		U1110	-	-	-
Bus 3	Navigation Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Radio and Display Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*2	U0199	-	○	-
		U0200	○	-	-
		U0208	-	-	○
		U0230	-	-	-
		U1002	-	-	-
Sub Bus 1	Multiplex Network Door ECU	U0101	-	-	-
		U0122	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	○	-	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	○	-
	Position Control ECU and Switch Assembly	-	-	-	-

-			Trouble Mode
-			Open in CAN main bus line(s)
Output ECU		Output DTC	Main Body ECU (Multiplex Network Body ECU) Click here	No. 5 CAN Junction Connector to No. 6 CAN Junction Connector	Multiplex Network Door ECU Click here
Bus 2	Airbag Sensor Assembly	-	-	-	-
	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1126	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	ECM	U012287	-	-	-
	ECM	U110487	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	4WD ECU Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
Bus 2	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U023A	-	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Television Camera Assembly	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U1104	-	-	-
Bus 5	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Parking Assist ECU*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0140	-	-	-
		U0233	-	-	-
		U1110	-	-	-
Bus 3	Navigation Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Radio and Display Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*2	U0199	○	-	-
		U0200	○	○	-
		U0208	○	-	-
		U0230	○	○	○
		U1002	-	-	-
	Multiplex Network Door ECU	U0101	-	-	○
		U0122	○	○	○
		U0142	○	○	○
		U0155	○	○	○
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	○	○	-
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	○	-	-
	Position Control ECU and Switch Assembly	-	-	-	-

-			Trouble Mode
-			CAN bus lines short circuit or short to GND
Output ECU		Output DTC	CANH to CANL	CANH Short to Ground	CANL Short to Ground
Bus 2	Airbag Sensor Assembly	-	-	-	-
Bus 2	Air Conditioning Amplifier Assembly	U0100	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Main Body ECU (Multiplex Network Body ECU)*2	U0100	-	-	-
		U0101	-	-	-
		U0120	-	-	-
		U0129	-	-	-
		U0151	-	-	-
		U0155	-	-	-
		U0164	-	-	-
		U023A	-	-	-
		U0327	-	-	-
		U1126	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Clearance Warning ECU Assembly	U0101	-	-	-
	Clearance Warning ECU Assembly	U0155	-	-	-
	ECM	U012287	-	-	-
	ECM	U110487	-	-	-
	Power Steering ECU Assembly	U0100	-	-	-
	Power Steering ECU Assembly	U0129	-	-	-
	4WD ECU Assembly*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
		U0142	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
	Combination Meter Assembly	U0100	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0151	-	-	-
		U0163	-	-	-
		U023A	-	-	-
		U1104	-	-	-
	Steering Sensor	-	-	-	-
	Skid Control ECU (Brake Actuator Assembly)*1	U0100	-	-	-
		U0124	-	-	-
		U0126	-	-	-
Bus 5	Blind Spot Monitor Sensor LH	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0142	-	-	-
	Television Camera Assembly	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0140	-	-	-
		U0163	-	-	-
		U0233	-	-	-
		U1110	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
	Driving Support ECU Assembly (Radar cruise function)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
	Driving Support ECU Assembly (Pre-collision System)	U0100	-	-	-
		U0125	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U1104	-	-	-
	Forward Recognition Camera	U0100	-	-	-
		U0101	-	-	-
		U0123	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0131	-	-	-
		U0142	-	-	-
		U0155	-	-	-
		U0235	-	-	-
		U1104	-	-	-
	Millimeter Wave Radar Sensor Assembly	-	-	-	-
	Parking Assist ECU*1	U0100	-	-	-
		U0126	-	-	-
		U0129	-	-	-
		U0140	-	-	-
		U0233	-	-	-
		U1110	-	-	-
Bus 3	Navigation Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Radio and Display Receiver Assembly	U0100	-	-	-
		U0140	-	-	-
		U0155	-	-	-
	Central Gateway ECU (Network Gateway ECU)*2	-	-	-	-
Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*2	U0199	○	○	○
		U0200	○	○	○
		U0208	○	○	○
		U0230	○	○	○
		U1002	○	○	○
	Multiplex Network Door ECU	U0101	○	○	○
		U0122	○	○	○
		U0142	○	○	○
		U0155	○	○	○
	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	○	○	○
	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	○	○	○
	Position Control ECU and Switch Assembly	-	-	-	-

CAN COMMUNICATION SYSTEM DTC COMBINATION TABLE