Dtc C15B4/71 Ecu Malfunction

Steering. Land Cruiser. Urj200, 202 Grj200 Vdj200
Variable Gear Ratio Steering. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

INSPECTION PROCEDURE

CHECK MASTER WARNING LIGHT

CLEAR DTC

PERFORM VGRS SYSTEM CALIBRATION

CHECK DTC

DTC 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

1.CHECK MASTER WARNING LIGHT

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

    Result
    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)