DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module: Description
The power steering ECU assembly receives signals from the ECM and skid control ECU via CAN communication
DTC DETECTION CONDITION CHART
| DTC No. | DTC Detection Item | Inspection Area |
|---|---|---|
| U0100 | ECM communication error |
|
| U0129 | Skid control ECU communication error |
|
HINT.
- When 2 or more DTCs starting with "U" are output simultaneously, inspect the connectors and wire harness of each ECU.
- If the power steering ECU assembly detects DTC U0129 only, it adjusts the amount of power assistance for a speed of 100 km/h (62 mph) and continues system control.