Lost Communication With ECM/PCM "A"

DTC U0100 Lost Communication with ECM/PCM "A"

DESCRIPTION

DTC Detection Condition:

The ECM and cruise control ECU (distance control ECU) transmit the data for vehicle general control and diagnosis function along the communication line.

The ECM transmits the current speed / stored speed and steering angle signal from the ABS traction actuator assembly (skid control ECU) to the cruise control ECU (distance control ECU).

This sit is detected when the cruise control ECU (distance control ECU) responds to the ECM to inform that the information sent from the cruise control ECU (distance control ECU) to ECM has problem.

Wiring Diagram:

Step 1:

Step 2:

INSPECTION PROCEDURE