LIGHTING SYSTEM Headlight Beam Level Control Actuator Circuit

DESCRIPTION

The headlight leveling ECU assembly actuates the headlight leveling motor according to vehicle conditions.

WIRING DIAGRAM

A01EL2ZE05

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / HL Auto Leveling / Active Test.

    5. Check that the motors operate.

      HL Auto Leveling
      Tester Display Test Part Control Range Diagnostic Note
      Drive The Leveling Motor Leveling motor UP/OFF -
      DOWN/OFF -
      OK
      Headlight leveling motors operate normally.

    NG

    CHECK HARNESS AND CONNECTOR (HEADLIGHT LEVELING MOTOR - HEADLIGHT LEVELING ECU ASSEMBLY) Click here

    OK

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

  2. CHECK HARNESS AND CONNECTOR (HEADLIGHT LEVELING MOTOR - HEADLIGHT LEVELING ECU ASSEMBLY)


    1. Disconnect the A40 headlight leveling ECU connector.

      A01EKAFE06
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Headlight Leveling Motor (Headlight Unit))

      		 *3 LH Side
      *2

      Front view of wire harness connector

      (to Headlight Leveling ECU Assembly)

      		 *4 RH Side

    2. Disconnect the A17 or A16 headlight leveling motor connector.

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

      Standard Resistance
      LH Side
      Tester Connection Condition Specified Condition
      A40-18 (LHT) - A17-2 (LHT) Always Below 1 Ω
      A40-11 (LH+) - A17-3 (LHM+) Always Below 1 Ω
      A40-24 (LH-) - A17-1 (LHM-) Always Below 1 Ω
      A40-18 (LHT) - Body ground Always 10 kΩ or higher
      A40-11 (LH+) - Body ground Always 10 kΩ or higher
      A40-24 (LH-) - Body ground Always 10 kΩ or higher
      RH Side
      Tester Connection Condition Specified Condition
      A40-17 (RHT) - A16-2 (RHT) Always Below 1 Ω
      A40-10 (RH+) - A16-3 (RHM+) Always Below 1 Ω
      A40-23 (RH-) - A16-1 (RHM-) Always Below 1 Ω
      A40-17 (RHT) - Body ground Always 10 kΩ or higher
      A40-10 (RH+) - Body ground Always 10 kΩ or higher
      A40-23 (RH-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. REPLACE HEADLIGHT LEVELING MOTOR (HEADLIGHT UNIT)


    1. Temporarily replace the headlight leveling motor with a new or normally functioning one Click here.

    2. Perform the Active Test of the leveling motors.

      OK
      Headlight leveling motors operate normally.

    NG

    REPLACE HEADLIGHT LEVELING ECU ASSEMBLY Click here

    OK

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