AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM, Diagnostic DTC:B2424, B2425

DTC Code DTC Name
B2424 Headlight Leveling Motor LH Communication Malfunction
B2425 Headlight Leveling Motor RH Communication Malfunction

DESCRIPTION

The headlight control computer assembly receives a signal from each headlight leveling motor using LIN communication.

DTC No. Detection Item DTC Detection Condition Trouble Area
B2424 Headlight Leveling Motor LH Communication Malfunction

  • Malfunction in headlight leveling motor LH

  • Open or short in headlight leveling motor LH communication circuit

  • Headlight unit LH

  • Headlight leveling motor LH (w/o Canister Pump Module)

  • Harness or connector

  • Headlight control computer assembly LH
B2425 Headlight Leveling Motor RH Communication Malfunction

  • Malfunction in headlight leveling motor RH

  • Open or short in headlight leveling motor RH communication circuit

  • Headlight unit RH

  • Headlight leveling motor RH (w/o Canister Pump Module)

  • Harness or connector

  • Headlight control computer assembly RH
DTC Detection Conditions (B2424):
Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition - - -
Malfunction Status Malfunction in headlight swivel and leveling motor LH ○ -
Open or short in headlight swivel and leveling motor LH communication circuit - ○
Detection Time - -
Number of Trips 1 trip 1 trip

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

DTC Detection Conditions (B2425):
Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition - - -
Malfunction Status Malfunction in headlight swivel and leveling motor RH ○ -
Open or short in headlight swivel and leveling motor RH communication circuit - ○
Detection Time - -
Number of Trips 1 trip 1 trip

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

WIRING DIAGRAM

B002EA1E05

CAUTION / NOTICE / HINT

Note

If the headlight control computer assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight control computer assembly LH.

Click here

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > AFS > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > AFS > Clear DTCs

    2. Check for DTCs.

      Click here


      Body Electrical > AFS > Trouble Codes
      OK
      DTC B2424 and B2425 are not output.
      Result
      Result Proceed to
      OK A
      NG (DTC B2424 is output) (w/o Canister Pump Module) B
      NG (DTC B2425 is output) (w/o Canister Pump Module) C
      NG (DTC B2424 is output) (w/ Canister Pump Module) D
      NG (DTC B2425 is output) (w/ Canister Pump Module) E

    A

    USE SIMULATION METHOD TO CHECK Click here

    C

    CHECK HARNESS AND CONNECTOR (HEADLIGHT CONTROL COMPUTER ASSEMBLY LH - HEADLIGHT CONTROL COMPUTER ASSEMBLY RH) Click here

    D

    REPLACE HEADLIGHT UNIT LH Click here

    E

    CHECK HARNESS AND CONNECTOR (HEADLIGHT CONTROL COMPUTER ASSEMBLY LH - HEADLIGHT CONTROL COMPUTER ASSEMBLY RH) Click here

    B

  3. INSPECT HEADLIGHT UNIT LH


    1. Remove the headlight assembly LH.

      Click here

    2. Remove the headlight unit LH from the headlight assembly LH.

      Click here

    3. B002E6SC03
      *a

      Front view of wire harness connector

      (to Headlight Leveling Motor LH)
      *b

      Front view of wire harness connector

      (to Headlight Control Computer Assembly LH)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      C-13 - O-3 Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HEADLIGHT UNIT LH Click here

    OK

  4. REPLACE HEADLIGHT LEVELING MOTOR LH


    1. Replace the headlight leveling motor LH with a new or known good one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  5. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > AFS > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  6. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > AFS > Trouble Codes
      OK
      DTC B2424 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (HEADLIGHT LEVELING MOTOR LH WAS DEFECTIVE)

    NG

    REPLACE HEADLIGHT CONTROL COMPUTER ASSEMBLY LH Click here

  7. CHECK HARNESS AND CONNECTOR (HEADLIGHT CONTROL COMPUTER ASSEMBLY LH - HEADLIGHT CONTROL COMPUTER ASSEMBLY RH)


    1. Disconnect the A29 headlight control computer assembly LH connector.

    2. Disconnect the A30 headlight control computer assembly RH connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A29-20(LINL) - A30-20(LINL) Always Below 1 Ω
      A29-20(LINL) or A30-20(LINL) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT HEADLIGHT UNIT RH


    1. Remove the headlight assembly LH.

      Click here

    2. Remove the headlight unit LH from the headlight assembly LH.

      Click here

    3. B002E6SC03
      *a

      Front view of wire harness connector

      (to Headlight Leveling Motor LH)
      *b

      Front view of wire harness connector

      (to Headlight Control Computer Assembly LH)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      C-13 - O-3 Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HEADLIGHT UNIT RH Click here

    OK

  9. REPLACE HEADLIGHT LEVELING MOTOR RH


    1. Replace the headlight leveling motor LH with a new or known good one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  10. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > AFS > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  11. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > AFS > Trouble Codes
      OK
      DTC B2424 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (HEADLIGHT LEVELING MOTOR LH WAS DEFECTIVE)

    NG

  12. REPLACE HEADLIGHT CONTROL COMPUTER ASSEMBLY RH


    1. Replace the headlight leveling motor LH with a new or known good one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  13. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > AFS > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  14. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > AFS > Trouble Codes
      OK
      DTC B2424 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (HEADLIGHT LEVELING MOTOR LH WAS DEFECTIVE)

    NG

    REPLACE HEADLIGHT CONTROL COMPUTER ASSEMBLY LH Click here

  15. REPLACE HEADLIGHT UNIT LH


    1. Replace the headlight unit LH with a new or known good one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  16. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > AFS > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  17. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > AFS > Trouble Codes
      OK
      DTC B2424 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (HEADLIGHT UNIT LH WAS DEFECTIVE)

    NG

    REPLACE HEADLIGHT CONTROL COMPUTER ASSEMBLY LH Click here

  18. CHECK HARNESS AND CONNECTOR (HEADLIGHT CONTROL COMPUTER ASSEMBLY LH - HEADLIGHT CONTROL COMPUTER ASSEMBLY RH)


    1. Disconnect the A29 headlight control computer assembly LH connector.

    2. Disconnect the A30 headlight control computer assembly RH connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A29-20(LINL) - A30-20(LINL) Always Below 1 Ω
      A29-20(LINL) or A30-20(LINL) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  19. REPLACE HEADLIGHT UNIT RH


    1. Replace the headlight unit RH with a new or known good one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  20. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > AFS > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  21. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > AFS > Trouble Codes
      OK
      DTC B2424 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (HEADLIGHT UNIT LH WAS DEFECTIVE)

    NG

  22. REPLACE HEADLIGHT CONTROL COMPUTER ASSEMBLY RH


    1. Replace the headlight leveling motor LH with a new or known good one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  23. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > AFS > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  24. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > AFS > Trouble Codes
      OK
      DTC B2424 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (HEADLIGHT UNIT LH WAS DEFECTIVE)

    NG

    REPLACE HEADLIGHT CONTROL COMPUTER ASSEMBLY LH Click here