Dtc C1203 Ecm Communication Circuit Malfunction


DESCRIPTION

INSPECTION PROCEDURE

CHECK PART NUMBER (ECM AND BRAKE ACTUATOR ASSEMBLY)

PERFORM CALIBRATION

CHECK FOR DTC

DTC C1203 ECM Communication Circuit Malfunction


DESCRIPTION

The VSC specification information is determined based on the engine specification information that the brake actuator assembly (skid control ECU) receives from the ECM via CAN communication and the door information (for 3 Door or 5 Door) stored by the brake actuator assembly (skid control ECU).

DTC Code
DTC Detection Condition
Trouble Area
C1203
The engine, drive source and destination variations that are sent from the ECM do not match the ones of the skid control ECU.
  1. ECM
  2. Brake actuator assembly

INSPECTION PROCEDURE

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

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

    Result
    Result
    		Proceed to
    Proper ECUs are installed
    		A
    Proper ECUs are not installed
    		B



B
REPLACE ECUS WITH PROPER ONES
A


2.PERFORM CALIBRATION

  1. Perform Calibration (LandCruiser RM000000XHR0BKX.html).


NEXT


3.CHECK FOR DTC

  1. Check for DTC (LandCruiser RM000000XHV0KEX.html).

    Result
    Result
    		Proceed to
    DTC C1203 is output
    		A
    DTC C1203 is not output
    		B



B
END
A

REPLACE BRAKE ACTUATOR ASSEMBLY (LandCruiser RM0000034UX02TX.html)