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

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 ().

B

REPLACE STEERING CONTROL ECU ()

C

REPLACE STEERING CONTROL ECU ()

A

USE SIMULATION METHOD TO CHECK ()