B2429

LIGHTING: LIGHTING SYSTEM: B2429: Steering Wheel Position Undecided

DTC B2429 - Steering Wheel Position Undecided

DESCRIPTION

The AFS ECU receives steering wheel position information (turned to right or left) from the main body ECU via CAN communication.






WIRING DIAGRAM





INSPECTION PROCEDURE
NOTE:
First perform the communication function inspections in HOW TO PROCEED WITH TROUBLESHOOTING to confirm that there are no CAN communication malfunctions before troubleshooting this symptom.

PROCEDURE

1. CLEAR DTC
(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.

2. CHECK DTC
(a) Check for DTC Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC B2429 output does not occur.
NG -- CHECK AFS ECU
OK -- NORMAL
3. CHECK AFS ECU
(a) Temporarily replace the AFS ECU with a new or normally functioning one Removal.
(b) Check for DTC Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC B2429 output does not occur.
NG -- REPLACE MAIN BODY ECU
OK -- REPLACE AFS ECU