LIGHTING SYSTEM, Diagnostic DTC:B2429

DTC Code DTC Name
B2429 Steering Wheel Position Undecided

DESCRIPTION

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

DTC Code DTC Detection Condition Trouble Area
B2429 Steering wheel position information malfunction.

  • AFS ECU

  • Network Gateway ECU

WIRING DIAGRAM

A01ESB4E04

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. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2429 output does not occur.

    NG

    CHECK AFS ECU (OPERATION) Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  2. CHECK AFS ECU (OPERATION)


    1. for LHD:

      Temporarily replace the AFS ECU with a new or normally functioning one Click here.

    2. for RHD:

      Temporarily replace the AFS ECU with a new or normally functioning one Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2429 output does not occur.
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    B

    END (AFS ECU IS DEFECTIVE)

    C

    GO TO VARIABLE GEAR RATIO STEERING SYSTEM Click here

    A

    END (AFS ECU IS DEFECTIVE)