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 DTCs C15B4/71, and stop VGRS operation.

DTC Code 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
      The engine stalled, battery voltage is too low, or the steering control ECU connector is disconnected.

    NG

    REPLACE STEERING CONTROL ECU Click here

    OK

  2. CLEAR DTC


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG) and turn the intelligent tester on.

    3. Clear the DTCs Click here.


    NEXT

  3. PERFORM VGRS SYSTEM CALIBRATION


    1. Perform VGRS system calibration Click here.


    NEXT

  4. CHECK DTC


    1. Turn the engine switch on (IG).

    2. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC is not output OK
      C15B4/71 is output NG

    NG

    REPLACE STEERING CONTROL ECU Click here

    OK

    END