VARIABLE GEAR RATIO STEERING SYSTEM, Diagnostic DTC:C15B4/71

DTC Code DTC Name
C15B4/71 ECU Malfunction

DESCRIPTION

If the steering control ECU detects an internal malfunction, it will turn the master warning light on, store DTC C15B4/71, and stop VGRS operation.

DTC Code DTC Detection Condition Trouble Area
C15B4/71 The steering control ECU detects an internal malfunction. Steering control ECU

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK MASTER WARNING LIGHT


    1. Check the conditions under which the master warning light comes on.

      Result

      Result

      		 Proceed to
      The engine stalled, battery voltage is too low, or the steering control ECU connector is disconnected. A
      Conditions other than above (for LHD). B
      Conditions other than above (for RHD). C

    B

    REPLACE STEERING CONTROL ECU Click here

    C

    REPLACE STEERING CONTROL ECU Click here

    A

  2. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  3. PERFORM VGRS SYSTEM CALIBRATION


    1. Perform VGRS system calibration Click here.


    NEXT

  4. CHECK DTC


    1. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC is not output A
      C15B4/71 is output (for LHD) B
      C15B4/71 is output (for RHD) C

    B

    REPLACE STEERING CONTROL ECU Click here

    C

    REPLACE STEERING CONTROL ECU Click here

    A

    USE SIMULATION METHOD TO CHECK Click here