LIGHTING SYSTEM Warning Light Circuit

DESCRIPTION

The headlight beam level control system warning light in the combination meter assembly comes on for approximately 3 seconds when the ignition switch is turned to ON. The warning light also comes on when the headlight leveling ECU detects a malfunction.

WIRING DIAGRAM

A002MOHE01
*1 METER
*2 Combination Meter Assembly
*3 from IG2 Relay
*4 Headlight Leveling ECU Assembly

PROCEDURE


  1. INSPECT COMBINATION METER ASSEMBLY

    A002P5NE11

    1. Remove the combination meter assembly Click here.

    2. Connect the positive (+) lead from the battery to terminal 39 (IG+) and the negative (-) lead to terminal 12 (LVWG).

    3. Check that the warning light comes on.

      OK
      Warning light comes on.

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

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

    A002NRKE02
    Text in Illustration
    *1

    Front view of wire harness connector

    (to Combination Meter Assembly)

    1. Disconnect the H62 combination meter connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      H62-39 (IG+) - Body ground Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    A002N1FE03
    Text in Illustration
    *1

    Front view of wire harness connector

    (to Combination Meter Assembly)
    *2

    Front view of wire harness connector

    (to Headlight Leveling ECU Assembly)

    1. Disconnect the A49 ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A49-6 (WNG) - H62-12 (LVWG) Always Below 1 Ω
      A49-6 (WNG) - Body ground Always 10 kΩ or higher

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR