AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM Indicator Circuit

DESCRIPTION

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

WIRING DIAGRAM

A004351E13

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (GAUGE FUSE - COMBINATION METER ASSEMBLY)


    1. Disconnect the L23 combination meter assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      L23-19 (IG+) - Body ground Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the A63 headlight leveling ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A63-6 (WNG) - L23-6 (LVWG) Always Below 1 Ω
      A63-6 (WNG) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT NO. 3 METER CIRCUIT PLATE


    1. A0041BNE06
      Text in Illustration
      *a

      Component with harness connected

      (Combination Meter Assembly)

      Reconnect the L23 combination meter assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      L23-6 (LVWG) - Body ground Power switch on (IG) 11 to 14 V

    NG

    REPLACE NO. 3 METER CIRCUIT PLATE Click here

    OK

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