Variable Gear Ratio Steering System

STEERING COLUMN: VARIABLE GEAR RATIO STEERING SYSTEM: U0100/56: Lost Communication with ECM / PCM "A"

DTC U0100/56 - Lost Communication with ECM / PCM "A"

DESCRIPTION

The steering control ECU receives signals from the ECM (engine ECU) via CAN communication.
If the steering control ECU detects an error in reception, it will output this DTC.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC
(a) Check for DTCs in the CAN communication system Diagnosis System.
Result:






B -- REPAIR CIRCUIT INDICATED BY DTC OUTPUT
A -- REPLACE ECM