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.
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 DTC Table by ECU.)
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.
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 sub bus 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 | *f | Sub Bus |
Note
This DTC table is from another model, and is only used here to show the ECUs connected to both a bus and a sub bus. It shows DTCs output when there is an open in the main bus lines for the ECM on the sub bus. This table does not show DTCs applicable to this vehicle.
Tech Tips
As gateway function equipped ECUs (sub bus monitor ECU) monitor signals from all ECUs that are connected to sub bus, 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)
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.
○: DTC is output.
X: Not set or may be set according to the malfunctioning part when one line of a branch is open.
-: DTC is not output.
*1: DTC is not output during communication error, but will be output as a history DTC (past DTC) when communication returns to normal.
*2: The DCM (telematics transceiver) informs the radio receiver assembly of output DTCs through the USB communication line.
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.
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.
| DTC | Trouble Mode | ||||
|---|---|---|---|---|---|
| Output ECU | Output DTC | Center Airbag Sensor Communication Stop Mode |
Main Body ECU Communication Stop Mode |
Skid Control ECU Communication Stop Mode |
Power Steering ECU Communication Stop Mode |
| Outer Mirror Control ECU Assembly (LH Side) | U0142 | - | -*1 | - | - |
| Outer Mirror Control ECU Assembly (RH Side) | U0142 | - | -*1 | - | - |
| Clearance Warning ECU Assembly | U0101 | X | X | X | X |
| U0155 | X | X | X | X | |
| Main Body ECU (Multiplex Network Body ECU) | U0100 | X | ○*1 | X | X |
| U0101 | X | ○*1 | X | X | |
| U0151 | ○ | ○*1 | X | X | |
| U0155 | X | ○*1 | X | X | |
| U0163 | X | ○*1 | X | X | |
| U0164 | X | ○*1 | X | X | |
| U0198 | X | ○*1 | X | X | |
| U0199 | - | -*1 | - | - | |
| U0200 | - | -*1 | - | - | |
| U0208 | - | -*1 | - | - | |
| U0293 | X | ○*1 | X | X | |
| U0327 | X | ○*1 | X | X | |
| U023A | X | ○*1 | X | X | |
| U1002 | - | -*1 | - | - | |
| U1133 | X | ○*1 | X | X | |
| Skid Control ECU (Brake Booster with Master Cylinder Assembly) | U0073 | X | X | ○*1 | X |
| U0120 | X | X | ○*1 | X | |
| U0123 | X | X | ○*1 | X | |
| U0124 | X | X | ○*1 | X | |
| U0126 | X | X | ○*1 | X | |
| U0293 | X | X | ○*1 | X | |
| Power Steering ECU Assembly | U0129 | X | X | ○ | ○*1 |
| U0293 | X | X | X | ○*1 | |
| U023A | X | X | X | ○*1 | |
| Power Management Control ECU | U0100 | X | X | X | X |
| U0129 | X | X | ○ | X | |
| U0140 | X | ○ | X | X | |
| U0151 | ○ | X | X | X | |
| U0164 | X | X | X | X | |
| U0293 | X | X | X | X | |
| U1107 | X | X | X | X | |
| Certification ECU (Smart Key ECU Assembly) | U0100 | X | X | X | X |
| U0142 | X | ○ | X | X | |
| U0155 | X | X | X | X | |
| U0293 | X | X | X | X | |
| Combination Meter Assembly | U0100 | X | X | X | X |
| U0103 | X | X | X | X | |
| U0129 | X | X | ○ | X | |
| U0131 | X | X | X | ○ | |
| U0142 | X | ○ | X | X | |
| U0151 | ○ | X | X | X | |
| U0163 | X | X | X | X | |
| U023A | X | X | X | X | |
| U1104 | X | X | X | X | |
| Transmission Control ECU Assembly | U0146 | X | ○ | X | X |
| Radio Receiver Assembly (for Navigation Receiver Type) |
U0073 | - | - | - | - |
| U0100 | X | X | X | X | |
| U0126 | X | X | X | X | |
| U0129 | X | X | ○ | X | |
| U0140 | X | ○ | X | X | |
| U0142 | X | ○ | X | X | |
| U0155 | X | X | X | X | |
| U0163 | - | - | - | - | |
| U0164 | X | X | X | X | |
| U0198 | - | - | - | - | |
| U0293 | X | X | X | X | |
| U1110 | - | - | - | - | |
| Radio Receiver Assembly (for Radio and Display Type) |
U0073 | - | - | - | - |
| U0100 | X | X | X | X | |
| U0129 | X | X | ○ | X | |
| U0140 | X | ○ | X | X | |
| U0155 | X | X | X | X | |
| U0164 | X | X | X | X | |
| U0293 | X | X | X | X | |
| U1110 | - | - | - | - | |
| Rear Television Camera Assembly | U0100 | X | X | X | X |
| U0126 | X | X | X | X | |
| U0129 | X | X | ○ | X | |
| U0140 | X | ○ | X | X | |
| U0163 | - | - | - | - | |
| U0293 | X | X | X | X | |
| U1110 | - | - | - | - | |
| Driving Support ECU Assembly (Dynamic Radar Cruise Control System) |
U0125 | X | X | X | X |
| U0126 | X | X | X | X | |
| U0129 | X | X | ○ | X | |
| U0293 | X | X | X | X | |
| Driving Support ECU Assembly (Pre-collision System) |
U0125 | X | X | X | X |
| U0126 | X | X | X | X | |
| U0129 | X | X | ○ | X | |
| U0293 | X | X | X | X | |
| Forward Recognition Camera | U0101 | X | X | X | X |
| U0123 | X | X | X | X | |
| U0126 | X | X | X | X | |
| U0129 | X | X | ○ | X | |
| U0131 | X | X | X | ○ | |
| U0142 | X | ○ | X | X | |
| U0155 | X | X | X | X | |
| U0293 | X | X | X | X | |
| U1104 | - | - | - | - | |
| U023A | - | - | - | - | |
| DTC | Trouble Mode | ||||
|---|---|---|---|---|---|
| Output ECU | Output DTC | ECM Communication Stop Mode |
Certification ECU Communication Stop Mode |
Combination Meter ECU Communication Stop Mode |
Transmission Control ECU Communication Stop Mode |
| Outer Mirror Control ECU Assembly (LH Side) | U0142 | - | - | - | - |
| Outer Mirror Control ECU Assembly (RH Side) | U0142 | - | - | - | - |
| Clearance Warning ECU Assembly | U0101 | X | X | X | X |
| U0155 | X | X | ○ | X | |
| Main Body ECU (Multiplex Network Body ECU) | U0100 | ○ | X | X | X |
| U0101 | X | X | X | X | |
| U0151 | X | X | X | X | |
| U0155 | X | X | ○ | X | |
| U0163 | X | X | X | X | |
| U0164 | X | X | X | X | |
| U0198 | X | X | X | X | |
| U0199 | - | - | - | - | |
| U0200 | - | - | - | - | |
| U0208 | - | - | - | - | |
| U0293 | X | X | X | X | |
| U0327 | X | ○ | X | X | |
| U023A | X | X | X | X | |
| U1002 | - | - | - | - | |
| U1133 | X | X | X | X | |
| Skid Control ECU (Brake Booster with Master Cylinder Assembly) | U0073 | X | X | X | X |
| U0120 | X | X | X | X | |
| U0123 | X | X | X | X | |
| U0124 | X | X | X | X | |
| U0126 | X | X | X | X | |
| U0293 | X | X | X | X | |
| Power Steering ECU Assembly | U0129 | X | X | X | X |
| U0293 | X | X | X | X | |
| U023A | X | X | X | X | |
| Power Management Control ECU | U0100 | ○ | X | X | X |
| U0129 | X | X | X | X | |
| U0140 | X | X | X | X | |
| U0151 | X | X | X | X | |
| U0164 | X | X | X | X | |
| U0293 | X | X | X | X | |
| U1107 | X | X | X | X | |
| Certification ECU (Smart Key ECU Assembly) | U0100 | ○ | ○*1 | X | X |
| U0142 | X | ○*1 | X | X | |
| U0155 | X | ○*1 | ○ | X | |
| U0293 | X | ○*1 | X | X | |
| Combination Meter Assembly | U0100 | ○ | X | ○*1 | X |
| U0103 | X | X | ○*1 | ○ | |
| U0129 | X | X | ○*1 | X | |
| U0131 | X | X | ○*1 | X | |
| U0142 | X | X | ○*1 | X | |
| U0151 | X | X | ○*1 | X | |
| U0163 | X | X | ○*1 | X | |
| U023A | X | X | ○*1 | X | |
| U1104 | X | X | ○*1 | X | |
| Transmission Control ECU Assembly | U0146 | X | X | X | ○*1 |
| Radio Receiver Assembly (for Navigation Receiver Type) |
U0073 | - | - | - | - |
| U0100 | ○ | X | X | X | |
| U0126 | X | X | X | X | |
| U0129 | X | X | X | X | |
| U0140 | X | X | X | X | |
| U0142 | X | X | X | X | |
| U0155 | X | X | ○ | X | |
| U0163 | - | - | - | - | |
| U0164 | X | X | X | X | |
| U0198 | - | - | - | - | |
| U0293 | X | X | X | X | |
| U1110 | - | - | - | - | |
| Radio Receiver Assembly (for Radio and Display Type) |
U0073 | - | - | - | - |
| U0100 | ○ | X | X | X | |
| U0129 | X | X | X | X | |
| U0140 | X | X | X | X | |
| U0155 | X | X | ○ | X | |
| U0164 | X | X | X | X | |
| U0293 | X | X | X | X | |
| U1110 | - | - | - | - | |
| Rear Television Camera Assembly | U0100 | X | X | X | X |
| U0126 | X | X | X | X | |
| U0129 | X | X | X | X | |
| U0140 | X | X | X | X | |
| U0163 | - | - | - | - | |
| U0293 | X | X | X | X | |
| U1110 | - | - | - | - | |
| Driving Support ECU Assembly (Dynamic Radar Cruise Control System) |
U0125 | X | X | X | X |
| U0126 | X | X | X | X | |
| U0129 | X | X | X | X | |
| U0293 | X | X | X | X | |
| Driving Support ECU Assembly (Pre-collision System) |
U0125 | X | X | X | X |
| U0126 | X | X | X | X | |
| U0129 | X | X | X | X | |
| U0293 | X | X | X | X | |
| Forward Recognition Camera | U0101 | X | X | X | X |
| U0123 | X | X | X | X | |
| U0126 | X | X | X | X | |
| U0129 | X | X | X | X | |
| U0131 | X | X | X | X | |
| U0142 | X | X | X | X | |
| U0155 | X | X | ○ | X | |
| U0293 | X | X | X | X | |
| U1104 | - | - | - | - | |
| U023A | - | - | - | - | |
| DTC | Trouble Mode | ||||
|---|---|---|---|---|---|
| Output ECU | Output DTC | Power Management Control ECU Communication Stop Mode |
Steering Angle Sensor Communication Stop Mode |
Yaw Rate Sensor Communication Stop Mode |
Central Gateway ECU Communication Stop Mode |
| Outer Mirror Control ECU Assembly (LH Side) | U0142 | - | - | - | -*1 |
| Outer Mirror Control ECU Assembly (RH Side) | U0142 | - | - | - | -*1 |
| Clearance Warning ECU Assembly | U0101 | ○ | X | X | ○ |
| U0155 | X | X | X | ○ | |
| Main Body ECU (Multiplex Network Body ECU) | U0100 | X | X | X | X*1 |
| U0101 | ○ | X | X | X*1 | |
| U0151 | X | X | X | X*1 | |
| U0155 | X | X | X | X*1 | |
| U0163 | X | X | X | ○*1 | |
| U0164 | ○ | X | X | X*1 | |
| U0198 | X | X | X | ○*1 | |
| U0199 | - | - | - | -*1 | |
| U0200 | - | - | - | -*1 | |
| U0208 | - | - | - | -*1 | |
| U0293 | ○ | X | X | X*1 | |
| U0327 | X | X | X | X*1 | |
| U023A | X | X | X | ○*1 | |
| U1002 | - | - | - | -*1 | |
| U1133 | ○ | X | X | X*1 | |
| Skid Control ECU (Brake Booster with Master Cylinder Assembly) | U0073 | X | ○ | ○ | X*1 |
| U0120 | ○ | X | X | X*1 | |
| U0123 | X | X | ○ | X*1 | |
| U0124 | X | X | ○ | X*1 | |
| U0126 | X | ○ | X | X*1 | |
| U0293 | ○ | X | X | X*1 | |
| Power Steering ECU Assembly | U0129 | X | X | X | X*1 |
| U0293 | ○ | X | X | X*1 | |
| U023A | X | X | X | ○*1 | |
| Power Management Control ECU | U0100 | ○*1 | X | X | X*1 |
| U0129 | ○*1 | X | X | X*1 | |
| U0140 | ○*1 | X | X | X*1 | |
| U0151 | ○*1 | X | X | X*1 | |
| U0164 | X | X | X | X*1 | |
| U0293 | ○*1 | X | X | X*1 | |
| U1107 | ○*1 | X | X | X*1 | |
| Certification ECU (Smart Key ECU Assembly) | U0100 | X | X | X | X*1 |
| U0142 | X | X | X | X*1 | |
| U0155 | X | X | X | X*1 | |
| U0293 | ○ | X | X | X*1 | |
| Combination Meter Assembly | U0100 | ○ | X | X | X*1 |
| U0103 | X | X | X | X*1 | |
| U0129 | X | X | X | X*1 | |
| U0131 | X | X | X | X*1 | |
| U0142 | X | X | X | X*1 | |
| U0151 | X | X | X | X*1 | |
| U0163 | X | X | X | ○*1 | |
| U023A | X | X | X | ○*1 | |
| U1104 | X | X | X | ○*1 | |
| Transmission Control ECU Assembly | U0146 | X | X | X | X*1 |
| Radio Receiver Assembly (for Navigation Receiver Type) |
U0073 | - | - | - | - |
| U0100 | ○ | X | X | ○ | |
| U0126 | X | ○ | X | ○ | |
| U0129 | X | X | X | ○ | |
| U0140 | X | X | X | ○ | |
| U0142 | X | X | X | ○ | |
| U0155 | X | X | X | ○ | |
| U0163 | - | - | - | - | |
| U0164 | ○ | X | X | ○ | |
| U0198 | - | - | - | - | |
| U0293 | ○ | X | X | ○ | |
| U1110 | - | - | - | - | |
| Radio Receiver Assembly (for Radio and Display Type) |
U0073 | - | - | - | - |
| U0100 | ○ | X | X | ○ | |
| U0129 | X | X | X | ○ | |
| U0140 | X | X | X | ○ | |
| U0155 | X | X | X | ○ | |
| U0164 | ○ | X | X | ○ | |
| U0293 | ○ | X | X | ○ | |
| U1110 | - | - | - | - | |
| Rear Television Camera Assembly | U0100 | ○ | X | X | ○ |
| U0126 | X | ○ | X | ○ | |
| U0129 | X | X | X | ○ | |
| U0140 | X | X | X | ○ | |
| U0163 | - | - | - | - | |
| U0293 | ○ | X | X | ○ | |
| U1110 | - | - | - | - | |
| Driving Support ECU Assembly (Dynamic Radar Cruise Control System) |
U0125 | X | X | ○ | ○ |
| U0126 | X | ○ | X | ○ | |
| U0129 | X | X | X | ○ | |
| U0293 | ○ | X | X | ○ | |
| Driving Support ECU Assembly (Pre-collision System) |
U0125 | X | X | ○ | ○ |
| U0126 | X | ○ | X | ○ | |
| U0129 | X | X | X | ○ | |
| U0293 | ○ | X | X | ○ | |
| Forward Recognition Camera | U0101 | ○ | X | X | ○ |
| U0123 | X | X | ○ | ○ | |
| U0126 | X | ○ | X | ○ | |
| U0129 | X | X | X | ○ | |
| U0131 | X | X | X | ○ | |
| U0142 | X | X | X | ○ | |
| U0155 | X | X | X | ○ | |
| U0293 | ○ | X | X | ○ | |
| U1104 | - | - | - | - | |
| U023A | - | - | - | - | |
DTC COMBINATION TABLE (OPEN OR SHORT IN BUS 3, PAST COMMUNICATION ERROR)
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.
○: DTC is output.
X: Not set or may be set according to the malfunctioning part when one line of a branch is open.
-: DTC is not output.
*1: DTC is not output during communication error, but will be output as a history DTC (past DTC) when communication returns to normal.
*2: The DCM (telematics transceiver) informs the radio receiver assembly of output DTCs through the USB communication line.
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.
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.
| DTC | Trouble Mode | |||
|---|---|---|---|---|
| Output ECU | Output DTC | DCM Communication Stop Mode |
Radio Receiver Assembly Communication Stop Mode |
Central Gateway ECU Communication Stop Mode |
| Outer Mirror Control ECU Assembly (LH Side) | U0142 | - | - | - |
| Outer Mirror Control ECU Assembly (RH Side) | U0142 | - | - | - |
| Clearance Warning ECU Assembly | U0101 | - | - | - |
| U0155 | - | - | - | |
| Main Body ECU (Multiplex Network Body ECU) | U0100 | - | - | - |
| U0101 | - | - | - | |
| U0151 | - | - | - | |
| U0155 | - | - | - | |
| U0163 | X | ○ | ○ | |
| U0164 | - | - | - | |
| U0198 | ○ | X | ○ | |
| U0199 | - | - | - | |
| U0200 | - | - | - | |
| U0208 | - | - | - | |
| U0293 | - | - | - | |
| U0327 | - | - | - | |
| U023A | - | - | - | |
| U1002 | - | - | - | |
| U1133 | - | - | - | |
| Skid Control ECU (Brake Booster with Master Cylinder Assembly) | U0073 | - | - | - |
| U0120 | - | - | - | |
| U0123 | - | - | - | |
| U0124 | - | - | - | |
| U0126 | - | - | - | |
| U0293 | - | - | - | |
| Power Steering ECU Assembly | U0129 | - | - | - |
| U0293 | - | - | - | |
| U023A | - | - | - | |
| Power Management Control ECU | U0100 | - | - | - |
| U0129 | - | - | - | |
| U0140 | - | - | - | |
| U0151 | - | - | - | |
| U0164 | - | - | - | |
| U0293 | - | - | - | |
| U1107 | - | - | - | |
| Certification ECU (Smart Key ECU Assembly) | U0100 | - | - | - |
| U0142 | - | - | - | |
| U0155 | - | - | - | |
| U0293 | - | - | - | |
| Combination Meter Assembly | U0100 | - | - | - |
| U0103 | - | - | - | |
| U0129 | - | - | - | |
| U0131 | - | - | - | |
| U0142 | - | - | - | |
| U0151 | - | - | - | |
| U0163 | X | ○ | ○ | |
| U023A | - | - | - | |
| U1104 | - | - | - | |
| Transmission Control ECU Assembly | U0146 | - | - | - |
| Radio Receiver Assembly (for Navigation Receiver Type) |
U0073 | X | ○*1 | X*1 |
| U0100 | X | ○*1 | ○*1 | |
| U0126 | X | ○*1 | ○*1 | |
| U0129 | X | ○*1 | ○*1 | |
| U0140 | X | ○*1 | ○*1 | |
| U0142 | ○*2 | X *1*2 |
○*1 | |
| U0155 | ○*2 | ○ *1*2 |
○*1 | |
| U0163 | ○*2 | ○ *1*2 |
○*1 | |
| U0164 | X | ○*1 | ○*1 | |
| U0198 | ○ | ○*1 | X*1 | |
| U0293 | X | ○*1 | ○*1 | |
| U1110 | X | ○*1 | ○*1 | |
| Radio Receiver Assembly (for Radio and Display Type) |
U0073 | X | ○*1 | X*1 |
| U0100 | X | ○*1 | ○*1 | |
| U0129 | X | ○*1 | ○*1 | |
| U0140 | X | ○*1 | ○*1 | |
| U0155 | X | ○*1 | ○*1 | |
| U0164 | X | ○*1 | ○*1 | |
| U0293 | X | ○*1 | ○*1 | |
| U1110 | X | ○*1 | ○*1 | |
| Rear Television Camera Assembly | U0100 | - | - | - |
| U0126 | - | - | - | |
| U0129 | - | - | - | |
| U0140 | - | - | - | |
| U0163 | X | ○ | ○ | |
| U0293 | - | - | - | |
| U1110 | - | - | - | |
| Driving Support ECU Assembly (Dynamic Radar Cruise Control System) |
U0125 | - | - | - |
| U0126 | - | - | - | |
| U0129 | - | - | - | |
| U0293 | - | - | - | |
| Driving Support ECU Assembly (Pre-collision System) |
U0125 | - | - | - |
| U0126 | - | - | - | |
| U0129 | - | - | - | |
| U0293 | - | - | - | |
| Forward Recognition Camera | U0101 | - | - | - |
| U0123 | - | - | - | |
| U0126 | - | - | - | |
| U0129 | - | - | - | |
| U0131 | - | - | - | |
| U0142 | - | - | - | |
| U0155 | - | - | - | |
| U0293 | - | - | - | |
| U1104 | - | - | - | |
| U023A | - | - | - | |
DTC COMBINATION TABLE (OPEN OR SHORT IN BUS 5, PAST COMMUNICATION ERROR)
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.
○: DTC is output.
X: Not set or may be set according to the malfunctioning part when one line of a branch is open.
-: DTC is not output.
*1: DTC is not output during communication error, but will be output as a history DTC (past DTC) when communication returns to normal.
*2: The DCM (telematics transceiver) informs the radio receiver assembly of output DTCs through the USB communication line.
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.
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.
| DTC | Trouble Mode | ||||
|---|---|---|---|---|---|
| Output ECU | Output DTC | Clearance Warning ECU Communication Stop Mode |
Driving Support ECU Communication Stop Mode |
Power Management Control ECU Communication Stop Mode |
Front Camera Module Communication Stop Mode |
| Outer Mirror Control ECU Assembly (LH Side) | U0142 | - | - | - | - |
| Outer Mirror Control ECU Assembly (RH Side) | U0142 | - | - | - | - |
| Clearance Warning ECU Assembly | U0101 | ○*1 | X | X | X |
| U0155 | ○*1 | X | X | X | |
| Main Body ECU (Multiplex Network Body ECU) | U0100 | - | - | - | - |
| U0101 | - | - | - | - | |
| U0151 | - | - | - | - | |
| U0155 | - | - | - | - | |
| U0163 | - | - | - | - | |
| U0164 | - | - | - | - | |
| U0198 | - | - | - | - | |
| U0199 | - | - | - | - | |
| U0200 | - | - | - | - | |
| U0208 | - | - | - | - | |
| U0293 | - | - | - | - | |
| U0327 | - | - | - | - | |
| U023A | X | X | X | ○ | |
| U1002 | - | - | - | - | |
| U1133 | - | - | - | - | |
| Skid Control ECU (Brake Booster with Master Cylinder Assembly) | U0073 | - | - | - | - |
| U0120 | - | - | - | - | |
| U0123 | - | - | - | - | |
| U0124 | - | - | - | - | |
| U0126 | - | - | - | - | |
| U0293 | - | - | - | - | |
| Power Steering ECU Assembly | U0129 | - | - | - | - |
| U0293 | - | - | - | - | |
| U023A | X | X | X | ○ | |
| Power Management Control ECU | U0100 | - | - | - | - |
| U0129 | - | - | - | - | |
| U0140 | - | - | - | - | |
| U0151 | - | - | - | - | |
| U0164 | - | - | - | - | |
| U0293 | - | - | - | - | |
| U1107 | - | - | - | - | |
| Certification ECU (Smart Key ECU Assembly) | U0100 | - | - | - | - |
| U0142 | - | - | - | - | |
| U0155 | - | - | - | - | |
| U0293 | - | - | - | - | |
| Combination Meter Assembly | U0100 | - | - | - | - |
| U0103 | - | - | - | - | |
| U0129 | - | - | - | - | |
| U0131 | - | - | - | - | |
| U0142 | - | - | - | - | |
| U0151 | - | - | - | - | |
| U0163 | - | - | - | - | |
| U023A | X | X | X | ○ | |
| U1104 | X | ○ | X | X | |
| Transmission Control ECU Assembly | U0146 | - | - | - | - |
| Radio Receiver Assembly (for Navigation Receiver Type) |
U0073 | - | - | - | - |
| U0100 | - | - | - | - | |
| U0126 | - | - | - | - | |
| U0129 | - | - | - | - | |
| U0140 | - | - | - | - | |
| U0142 | - | - | - | - | |
| U0155 | - | - | - | - | |
| U0163 | - | - | - | - | |
| U0164 | - | - | - | - | |
| U0198 | - | - | - | - | |
| U0293 | - | - | - | - | |
| U1110 | ○ | X | X | X | |
| Radio Receiver Assembly (for Radio and Display Type) |
U0073 | - | - | - | - |
| U0100 | - | - | - | - | |
| U0129 | - | - | - | - | |
| U0140 | - | - | - | - | |
| U0155 | - | - | - | - | |
| U0164 | - | - | - | - | |
| U0293 | - | - | - | - | |
| U1110 | ○ | X | X | X | |
| Rear Television Camera Assembly | U0100 | X | X | X | X |
| U0126 | X | X | X | X | |
| U0129 | X | X | X | X | |
| U0140 | X | X | X | X | |
| U0163 | X | X | X | X | |
| U0293 | X | X | X | X | |
| U1110 | ○ | X | X | X | |
| Driving Support ECU Assembly (Dynamic Radar Cruise Control System) |
U0125 | X | ○*1 | X | X |
| U0126 | X | ○*1 | X | X | |
| U0129 | X | ○*1 | X | X | |
| U0293 | X | ○*1 | X | X | |
| Driving Support ECU Assembly (Pre-collision System) |
U0125 | X | ○*1 | X | X |
| U0126 | X | ○*1 | X | X | |
| U0129 | X | ○*1 | X | X | |
| U0293 | X | ○*1 | X | X | |
| Forward Recognition Camera | U0101 | X | X | X | ○*1 |
| U0123 | X | X | X | ○*1 | |
| U0126 | X | X | X | ○*1 | |
| U0129 | X | X | X | ○*1 | |
| U0131 | X | X | X | ○*1 | |
| U0142 | X | X | X | ○*1 | |
| U0155 | X | X | X | ○*1 | |
| U0293 | X | X | X | ○*1 | |
| U1104 | X | ○ | X | ○*1 | |
| U023A | - | - | - | - | |
| DTC | Trouble Mode | |||
|---|---|---|---|---|
| Output ECU | Output DTC | Millimeter Wave Radar Sensor Communication Stop Mode |
Rear Television Camera Communication Stop Mode |
Central Gateway ECU Communication Stop Mode |
| Outer Mirror Control ECU Assembly (LH Side) | U0142 | - | - | - |
| Outer Mirror Control ECU Assembly (RH Side) | U0142 | - | - | - |
| Clearance Warning ECU Assembly | U0101 | X | X | ○*1 |
| U0155 | X | X | ○*1 | |
| Main Body ECU (Multiplex Network Body ECU) | U0100 | - | - | - |
| U0101 | - | - | - | |
| U0151 | - | - | - | |
| U0155 | - | - | - | |
| U0163 | - | - | - | |
| U0164 | - | - | - | |
| U0198 | - | - | - | |
| U0199 | - | - | - | |
| U0200 | - | - | - | |
| U0208 | - | - | - | |
| U0293 | - | - | - | |
| U0327 | - | - | - | |
| U023A | X | X | ○ | |
| U1002 | - | - | - | |
| U1133 | - | - | - | |
| Skid Control ECU (Brake Booster with Master Cylinder Assembly) | U0073 | - | - | - |
| U0120 | - | - | - | |
| U0123 | - | - | - | |
| U0124 | - | - | - | |
| U0126 | - | - | - | |
| U0293 | - | - | - | |
| Power Steering ECU Assembly | U0129 | - | - | - |
| U0293 | - | - | - | |
| U023A | X | X | ○ | |
| Power Management Control ECU | U0100 | - | - | - |
| U0129 | - | - | - | |
| U0140 | - | - | - | |
| U0151 | - | - | - | |
| U0164 | - | - | - | |
| U0293 | - | - | - | |
| U1107 | - | - | - | |
| Certification ECU (Smart Key ECU Assembly) | U0100 | - | - | - |
| U0142 | - | - | - | |
| U0155 | - | - | - | |
| U0293 | - | - | - | |
| Combination Meter Assembly | U0100 | - | - | - |
| U0103 | - | - | - | |
| U0129 | - | - | - | |
| U0131 | - | - | - | |
| U0142 | - | - | - | |
| U0151 | - | - | - | |
| U0163 | - | - | - | |
| U023A | X | X | ○ | |
| U1104 | X | X | ○ | |
| Transmission Control ECU Assembly | U0146 | - | - | - |
| Radio Receiver Assembly (for Navigation Receiver Type) |
U0073 | - | - | - |
| U0100 | - | - | - | |
| U0126 | - | - | - | |
| U0129 | - | - | - | |
| U0140 | - | - | - | |
| U0142 | - | - | - | |
| U0155 | - | - | - | |
| U0163 | - | - | - | |
| U0164 | - | - | - | |
| U0198 | - | - | - | |
| U0293 | - | - | - | |
| U1110 | X | X | ○ | |
| Radio Receiver Assembly (for Radio and Display Type) |
U0073 | - | - | - |
| U0100 | - | - | - | |
| U0129 | - | - | - | |
| U0140 | - | - | - | |
| U0155 | - | - | - | |
| U0164 | - | - | - | |
| U0293 | - | - | - | |
| U1110 | X | X | ○ | |
| Rear Television Camera Assembly | U0100 | X | ○*1 | ○*1 |
| U0126 | X | ○*1 | ○*1 | |
| U0129 | X | ○*1 | ○*1 | |
| U0140 | X | ○*1 | ○*1 | |
| U0163 | X | ○*1 | ○*1 | |
| U0293 | X | ○*1 | ○*1 | |
| U1110 | X | ○*1 | X*1 | |
| Driving Support ECU Assembly (Dynamic Radar Cruise Control System) |
U0125 | X | X | ○*1 |
| U0126 | X | X | ○*1 | |
| U0129 | X | X | ○*1 | |
| U0293 | X | X | ○*1 | |
| Driving Support ECU Assembly (Pre-collision System) |
U0125 | X | X | ○*1 |
| U0126 | X | X | ○*1 | |
| U0129 | X | X | ○*1 | |
| U0293 | X | X | ○*1 | |
| Forward Recognition Camera | U0101 | X | X | ○*1 |
| U0123 | X | X | ○*1 | |
| U0126 | X | X | ○*1 | |
| U0129 | X | X | ○*1 | |
| U0131 | X | X | ○*1 | |
| U0142 | X | X | ○*1 | |
| U0155 | X | X | ○*1 | |
| U0293 | X | X | ○*1 | |
| U1104 | X | X | X*1 | |
| U023A | - | - | -*1 | |
DTC COMBINATION TABLE (OPEN OR SHORT IN SUB BUS 1, PAST COMMUNICATION ERROR)
Regarding a past communication error of an ECU and sensor connected to the sub bus 1 (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.
○: DTC is output.
X: Not set or may be set according to the malfunctioning part when one line of a branch is open.
-: DTC is not output.
*1: DTC is not output during communication error, but will be output as a history DTC (past DTC) when communication returns to normal.
*2: The DCM (telematics transceiver) informs the radio receiver assembly of output DTCs through the USB communication line.
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.
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.
| DTC | Trouble Mode | ||||
|---|---|---|---|---|---|
| Output ECU | Output DTC | Main Body ECU (Multiplex Network Body ECU) |
Outer Mirror Control ECU Assembly (for LH Side) |
Outer Mirror Control ECU Assembly (for RH Side) |
Position Control ECU and Switch Assembly |
| Outer Mirror Control ECU Assembly (LH Side) | U0142 | ○*1 | X | ○*1 | X |
| Outer Mirror Control ECU Assembly (RH Side) | U0142 | ○*1 | ○*1 | X | X |
| Clearance Warning ECU Assembly | U0101 | - | - | - | - |
| U0155 | - | - | - | - | |
| Main Body ECU (Multiplex Network Body ECU) | U0100 | - | - | - | - |
| U0101 | - | - | - | - | |
| U0151 | - | - | - | - | |
| U0155 | - | - | - | - | |
| U0163 | - | - | - | - | |
| U0164 | - | - | - | - | |
| U0198 | - | - | - | - | |
| U0199 | ○ | X | ○ | X | |
| U0200 | ○ | ○ | X | X | |
| U0208 | ○ | X | X | ○ | |
| U0293 | - | - | - | - | |
| U0327 | - | - | - | - | |
| U023A | - | - | - | - | |
| U1002 | ○ | X | X | X | |
| U1133 | - | - | - | - | |
| Skid Control ECU (Brake Booster with Master Cylinder Assembly) | U0073 | - | - | - | - |
| U0120 | - | - | - | - | |
| U0123 | - | - | - | - | |
| U0124 | - | - | - | - | |
| U0126 | - | - | - | - | |
| U0293 | - | - | - | - | |
| Power Steering ECU Assembly | U0129 | - | - | - | - |
| U0293 | - | - | - | - | |
| U023A | - | - | - | - | |
| Power Management Control ECU | U0100 | - | - | - | - |
| U0129 | - | - | - | - | |
| U0140 | - | - | - | - | |
| U0151 | - | - | - | - | |
| U0164 | - | - | - | - | |
| U0293 | - | - | - | - | |
| U1107 | - | - | - | - | |
| Certification ECU (Smart Key ECU Assembly) | U0100 | - | - | - | - |
| U0142 | - | - | - | - | |
| U0155 | - | - | - | - | |
| U0293 | - | - | - | - | |
| Combination Meter Assembly | U0100 | - | - | - | - |
| U0103 | - | - | - | - | |
| U0129 | - | - | - | - | |
| U0131 | - | - | - | - | |
| U0142 | - | - | - | - | |
| U0151 | - | - | - | - | |
| U0163 | - | - | - | - | |
| U023A | - | - | - | - | |
| U1104 | - | - | - | - | |
| Transmission Control ECU Assembly | U0146 | - | - | - | - |
| Radio Receiver Assembly (for Navigation Receiver Type) |
U0073 | - | - | - | - |
| U0100 | - | - | - | - | |
| U0126 | - | - | - | - | |
| U0129 | - | - | - | - | |
| U0140 | - | - | - | - | |
| U0142 | - | - | - | - | |
| U0155 | - | - | - | - | |
| U0163 | - | - | - | - | |
| U0164 | - | - | - | - | |
| U0198 | - | - | - | - | |
| U0293 | - | - | - | - | |
| U1110 | - | - | - | - | |
| Radio Receiver Assembly (for Radio and Display Type) |
U0073 | - | - | - | - |
| U0100 | - | - | - | - | |
| U0129 | - | - | - | - | |
| U0140 | - | - | - | - | |
| U0155 | - | - | - | - | |
| U0164 | - | - | - | - | |
| U0293 | - | - | - | - | |
| U1110 | - | - | - | - | |
| Rear Television Camera Assembly | U0100 | - | - | - | - |
| U0126 | - | - | - | - | |
| U0129 | - | - | - | - | |
| U0140 | - | - | - | - | |
| U0163 | - | - | - | - | |
| U0293 | - | - | - | - | |
| U1110 | - | - | - | - | |
| Driving Support ECU Assembly (Dynamic Radar Cruise Control System) |
U0125 | - | - | - | - |
| U0126 | - | - | - | - | |
| U0129 | - | - | - | - | |
| U0293 | - | - | - | - | |
| Driving Support ECU Assembly (Pre-collision System) |
U0125 | - | - | - | - |
| U0126 | - | - | - | - | |
| U0129 | - | - | - | - | |
| U0293 | - | - | - | - | |
| Forward Recognition Camera | U0101 | - | - | - | - |
| U0123 | - | - | - | - | |
| U0126 | - | - | - | - | |
| U0129 | - | - | - | - | |
| U0131 | - | - | - | - | |
| U0142 | - | - | - | - | |
| U0155 | - | - | - | - | |
| U0293 | - | - | - | - | |
| U1104 | - | - | - | - | |
| U023A | - | - | - | - | |