AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM Warning Light Circuit

DTC Code DTC Name
Warning Light Circuit

DESCRIPTION

The headlight beam level control system warning light in the combination meter comes on for approximately 3 seconds when the power switch is turned on (IG). The warning light also comes on when the headlight leveling ECU detects a malfunction.

WIRING DIAGRAM

E342968E01

CAUTION / NOTICE / HINT

Tip:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

  1. INSPECT COMBINATION METER ASSEMBLY

    1. Remove the combination meter assembly.

      Click here

      E270531N02

    2. Connect the positive (+) lead from the battery to terminal G16-39 (IG+) and the negative (-) lead to terminal G17-4 (LVWG).

    3. Check that the warning light comes on.

    Result

    Proceed to

    Warning light comes on

    Warning light does not come on
    Warning light does not come on

    REPLACE COMBINATION METER ASSEMBLY

    Click here

    Warning light comes on

  2. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BATTERY)

    1. B143726C01

      *a

      Front view of wire harness connector

      (to Combination Meter Assembly)

      Disconnect the G16 combination meter connector.

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      G16-39 (IG+) - Body ground

      Power switch on (IG)

      11 to 14 V

      Power switch off

      Below 1 V

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - HEADLIGHT LEVELING ECU ASSEMBLY)

    1. Disconnect the G17 combination meter connector.

    2. Disconnect the A67 headlight leveling ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A67-6 (WNG) - G17-4 (LVWG)

      Always

      Below 1 Ω

      A67-6 (WNG) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR