Dtc C15B4/71 Ecu Malfunction

Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - VARIABLE GEAR RATIO STEERING

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 CodeDTC Detection ConditionTrouble Area
C15B4/71 The steering control ECU detects an internal malfunction. Steering control ECU

INSPECTION PROCEDURE

1.CHECK MASTER WARNING LIGHT

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 ()
C
REPLACE STEERING CONTROL ECU ()
A
2.CLEAR DTC

Clear the DTCs ().

NEXT
3.PERFORM VGRS SYSTEM CALIBRATION

Perform VGRS system calibration ().

NEXT
4.CHECK DTC

Check for DTCs ().

Result
ResultProceed to
DTC is not outputA
C15B4/71 is output (for LHD)B
C15B4/71 is output (for RHD)C
B
REPLACE STEERING CONTROL ECU ()
C
REPLACE STEERING CONTROL ECU ()
A
USE SIMULATION METHOD TO CHECK ()