VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1203

DTC Code DTC Name
C1203 ECM Communication Circuit Malfunction

DESCRIPTION

This circuit is used to send TRC and VSC control information from the skid control ECU (brake actuator assembly) to the ECM, and engine control information from the ECM to the skid control ECU (brake actuator assembly) via CAN communication.

DTC No. DTC Detection Condition Trouble Area
C1203 Engine, drive source and destination variations that are sent from the ECM do not match the ones of the skid control ECU (brake actuator assembly). ECM

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK PART NUMBER (ECM AND BRAKE ACTUATOR ASSEMBLY)


    1. Check that the proper ECM and skid control ECU (brake actuator assembly) are installed.

      OK
      Proper ECUs are installed.
      Result
      Result Proceed to
      OK (for 2AR-FE) A
      OK (for 2GR-FE) B
      NG C

    B

    REPLACE ECM Click here

    C

    REPLACE ECUS WITH PROPER ONES

    A

    REPLACE ECM Click here