DTC U0073: Control Module Communication Bus OFF; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module: Description
The power steering ECU receives signals from the ECM and the skid control ECU via the CAN communication system.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0073 | Control module communication bus off | CAN communication system |
| U0100 | Lost communication with ECM/PCM "A" |
|
| U0129 | Lost communication with brake system control module |
|
HINT:
- When 2 or more DTCs starting with [U] are output simultaneously, inspect the connectors and wire harness of each ECU.
- If DTC U0100 is output, first erase the DTCs. Then turn the ignition switch from off to on (IG). If DTC U0100 is not output again, there is no malfunction.