C15B4

VARIABLE GEAR RATIO STEERING: VARIABLE GEAR RATIO STEERING SYSTEM: C15B4/71: ECU Malfunction

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.






INSPECTION PROCEDURE

PROCEDURE

1. CHECK MASTER WARNING LIGHT
(a) Check the conditions under which the master warning light comes on.

Result





B -- REPLACE STEERING CONTROL ECU
A -- Continue to next step.
2. CLEAR DTC
(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
3. PERFORM VGRS SYSTEM CALIBRATION
(a) Perform VGRS system calibration Calibration.
NEXT -- Continue to next step.
4. CHECK DTC
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

Result





B -- REPLACE STEERING CONTROL ECU
A -- USE SIMULATION METHOD TO CHECK