Power Steering System

POWER STEERING: 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

DTC U0130 - Lost Communication with Steering Effort Control Module

DTC U1104 - Lost Communication with Driving Support ECU

DTC U1105 - Lost Communication with Parking Assist ECU

DESCRIPTION

The power steering ECU inputs and outputs driving support ECU, parking assist ECU, ECM, skid control ECU, and steering control ECU signals 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 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

PROCEDURE

1. CHECK DTC
(a) Using the Techstream, check for DTCs Power Steering System.
NEXT -- GO TO CAN COMMUNICATION SYSTEM