LIGHTING SYSTEM Headlight Beam Level Control Actuator Circuit

DESCRIPTION

The headlight leveling motor receives operation signals from the headlight leveling ECU assembly.

WIRING DIAGRAM

A0161TTE05

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY LH OR RH - HEADLIGHT LEVELING ECU)


    1. Disconnect the B12 and B2 headlight assembly connectors.

    2. Disconnect the A64 headlight leveling ECU assembly connector.

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

      Standard Resistance
      LH Side
      Tester Connection Condition Specified Condition
      A64-31 (LL1+) - B12-15 (LL1+) Always Below 1 Ω
      A64-30 (LL1-) - B12-14 (LL1-) Always Below 1 Ω
      A64-29 (LL2+) - B12-13 (LL2+) Always Below 1 Ω
      A64-28 (LL2-) - B12-12 (LL2-) Always Below 1 Ω
      A64-31 (LL1+) - Body ground Always 10 kΩ or higher
      A64-30 (LL1-) - Body ground Always 10 kΩ or higher
      A64-29 (LL2+) - Body ground Always 10 kΩ or higher
      A64-28 (LL2-) - Body ground Always 10 kΩ or higher
      RH Side
      Tester Connection Condition Specified Condition
      A64-12 (LR1+) - B2-15 (LR1+) Always Below 1 Ω
      A64-11 (LR1-) - B2-14 (LR1-) Always Below 1 Ω
      A64-10 (LR2+) - B2-13 (LR2+) Always Below 1 Ω
      A64-9 (LR2-) - B2-12 (LR2-) Always Below 1 Ω
      A64-12 (LR1+) - Body ground Always 10 kΩ or higher
      A64-11 (LR1-) - Body ground Always 10 kΩ or higher
      A64-10 (LR2+) - Body ground Always 10 kΩ or higher
      A64-9 (LR2-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A015Z98E01
      Text in Illustration
      *1

      Component without harness connected

      (Headlight Assembly LH)
      *2

      Component without harness connected

      (Headlight Assembly RH)
      *3

      Front view of wire harness connector

      (to Headlight Leveling Motor LH)
      *4

      Front view of wire harness connector

      (to Headlight Leveling Motor RH)

      Disconnect the headlight leveling motor connector.

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

      Standard Resistance
      LH Side
      Tester Connection Condition Specified Condition
      B12-15 (LL1+) - 3 Always Below 1 Ω
      B12-14 (LL1-) - 4 Always Below 1 Ω
      B12-13 (LL2+) - 1 Always Below 1 Ω
      B12-12 (LL2-) - 2 Always Below 1 Ω
      B12-15 (LL1+) - Body ground Always 10 kΩ or higher
      B12-14 (LL1-) - Body ground Always 10 kΩ or higher
      B12-13 (LL2+) - Body ground Always 10 kΩ or higher
      B12-12 (LL2-) - Body ground Always 10 kΩ or higher
      RH Side
      Tester Connection Condition Specified Condition
      B2-15 (LR1+) - 3 Always Below 1 Ω
      B2-14 (LR1-) - 4 Always Below 1 Ω
      B2-13 (LR2+) - 1 Always Below 1 Ω
      B2-12 (LR2-) - 2 Always Below 1 Ω
      B2-15 (LR1+) - Body ground Always 10 kΩ or higher
      B2-14 (LR1-) - Body ground Always 10 kΩ or higher
      B2-13 (LR2+) - Body ground Always 10 kΩ or higher
      B2-12 (LR2-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT HEADLIGHT LEVELING MOTOR (LH OR RH)


    1. A01627JE05
      Text in Illustration
      *1

      Component without harness connected

      (Headlight Leveling Motor)

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

      Standard Resistance
      RH Side
      Tester Connection Condition Specified Condition
      1 - 2 Always 5.8 to 12.5 Ω
      3 - 4 Always 5.8 to 12.5 Ω
      LH Side
      Tester Connection Condition Specified Condition
      1 - 2 Always 5.8 to 12.5 Ω
      3 - 4 Always 5.8 to 12.5 Ω

    NG

    REPLACE HEADLIGHT LEVELING MOTOR (LH OR RH) Click here

    OK

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