Power Steering System

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: U0100: Lost Communication with ECM / PCM "A"

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.





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.

INSPECTION PROCEDURE

Refer to the U0100 (CAN communication system) Diagnosis System.
Refer to the U0129 (CAN communication system) Diagnosis System.