AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM Headlight Beam Level Control Actuator Circuit

DESCRIPTION

The headlight control computer assembly LH and RH operates the headlight leveling motors according to the vehicle conditions.

WIRING DIAGRAM

B002CV7E09

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS (DRIVE THE LEVELING MOTOR)


    1. Connect the GTS to the DLC3.

    2. Start the engine.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / AFS / Active Test.

    5. Perform the Active Test according to the display on the GTS.


      Body Electrical > AFS > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Drive The Leveling Motor Leveling motor upward or downward operation Stop/Down/Up Perform the Active Test with the engine started and vehicle stopped

      Body Electrical > AFS > Active Test
      Tester Display
      Drive The Leveling Motor
      OK
      Headlight leveling motors operate normally.
      Result
      Result Proceed to
      OK A
      NG (for LH Side) (w/o Canister Pump Module) B
      NG (for RH Side) (w/o Canister Pump Module) C
      NG (for LH Side) (w/ Canister Pump Module) D
      NG (for RH Side) (w/ Canister Pump Module) E

    A

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    C

    INSPECT HEADLIGHT UNIT RH Click here

    D

    REPLACE HEADLIGHT UNIT LH Click here

    E

    REPLACE HEADLIGHT UNIT RH Click here

    B

  2. INSPECT HEADLIGHT UNIT LH


    1. Remove the headlight unit LH.

      Click here

    2. Remove the headlight control computer assembly LH.

      Click here

    3. Disconnect the headlight leveling motor LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      LVL-1 - F-17 Always Below 1 Ω
      LVL-2 - F-8 Always Below 1 Ω
      LVL-3 - F-20 Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HEADLIGHT UNIT LH Click here

    OK

  3. REPLACE HEADLIGHT LEVELING MOTOR LH


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

      Click here

    2. Perform the Active Test according to the display on the GTS.


      Body Electrical > AFS > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Drive The Leveling Motor Leveling motor upward or downward operation Stop/Down/Up Perform the Active Test with the engine started and vehicle stopped

      Body Electrical > AFS > Active Test
      Tester Display
      Drive The Leveling Motor
      OK
      Headlight leveling motor LH operate normally.
      Result
      Proceed to
      OK
      NG

    OK

    END (HEADLIGHT LEVELING MOTOR LH WAS DEFECTIVE)

    NG

    REPLACE HEADLIGHT CONTROL COMPUTER ASSEMBLY LH Click here

  4. INSPECT HEADLIGHT UNIT RH


    1. Remove the headlight assembly RH.

      Click here

    2. Remove the headlight control computer assembly RH.

      Click here

    3. Disconnect the headlight leveling motor RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      LVL-1 - F-17 Always Below 1 Ω
      LVL-2 - F-8 Always Below 1 Ω
      LVL-3 - F-20 Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HEADLIGHT UNIT LH Click here

    OK

  5. REPLACE HEADLIGHT LEVELING MOTOR RH


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

      Click here

    2. Perform the Active Test according to the display on the GTS.


      Body Electrical > AFS > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Drive The Leveling Motor Leveling motor upward or downward operation Stop/Down/Up Perform the Active Test with the engine started and vehicle stopped

      Body Electrical > AFS > Active Test
      Tester Display
      Drive The Leveling Motor
      OK
      headlight leveling motor RH operate normally.
      Result
      Proceed to
      OK
      NG

    OK

    END (HEADLIGHT LEVELING MOTOR RH WAS DEFECTIVE)

    NG

    REPLACE HEADLIGHT CONTROL COMPUTER ASSEMBLY RH Click here

  6. REPLACE HEADLIGHT UNIT LH


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

      Click here

    2. Perform the Active according to the display on the GTS.


      Body Electrical > AFS > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Drive The Leveling Motor Leveling motor upward ordownward operation Stop/Down/Up Perform the Active Testwith the engine startedand vehicle stopped

      Body Electrical > AFS > Active Test
      Tester Display
      Drive The Leveling Motor
      OK
      Headlight leveling motor LH operate normally.
      Result
      Proceed to
      OK
      NG

    OK

    END (HEADLIGHT UNIT LH WAS DEFECTIVE)

    NG

    REPLACE HEADLIGHT CONTROL COMPUTER ASSEMBLY LH Click here

  7. REPLACE HEADLIGHT UNIT RH


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

      Click here

    2. Perform the Active according to the display on the GTS.


      Body Electrical > AFS > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Drive The Leveling Motor Leveling motor upward ordownward operation Stop/Down/Up Perform the Active Testwith the engine startedand vehicle stopped

      Body Electrical > AFS > Active Test
      Tester Display
      Drive The Leveling Motor
      OK
      Headlight leveling motor RH operate normally.
      Result
      Proceed to
      OK
      NG

    OK

    END (HEADLIGHT UNIT RH WAS DEFECTIVE)

    NG

    REPLACE HEADLIGHT CONTROL COMPUTER ASSEMBLY RH Click here