|DTC Code||DTC Name|
|U0129||Lost Communication with Skid Control ECU|
The ECM and skid control ECU communicate with each other via CAN communication.
If there is a problem with this communication, the ECM stores this DTC.
|DTC No.||Detection Item||DTC Detection Condition||Trouble Area||MIL||Memory|
|U0129||Lost Communication with Skid Control ECU||
All of following conditions met for 1 second or more:
(1 trip detection logic)
||Comes on||DTC stored|
|DTC No.||DTC Detection Drive Pattern|
|U0129||Ignition switch ON|
|*a||Skid Control ECU (Brake Actuator Assembly)|
|*b||CAN Communication Line|
CAUTION / NOTICE / HINT
When a DTC indicating a CAN communication system malfunction is output, repair the CAN communication system first.
Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.
If the CAN communication system is malfunctioning, there is no data output from the ECM. In this case, some of the freeze frame data will not be correct and not identical to the ECM data. However the ECM data is correct.
CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC U0129)
Connect the GTS to the DLC3.
Turn the ignition switch to ON and turn the GTS on.
Enter the following menus: System Select / Health Check.
Read the DTCs.
If any DTCs other than U0129 are output, troubleshoot those DTCs first.
GO TO CAN COMMUNICATION SYSTEM FOR TROUBLESHOOTING Click hereНажмите здесь
GO TO DTC CHART