B2429

LIGHTING: LIGHTING SYSTEM: B2429: Steering Wheel Position Undecided
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

NOTICE:
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. CHECK FOR DTC

(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.

(b) Check for DTC Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B2429 output does not occur.

NG -- CHECK AFS ECU (OPERATION)

OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

2. CHECK AFS ECU (OPERATION)

(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 -- END (REPLACE AFS ECU) Removal