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AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM Indicator Circuit

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DTC Code DTC Name
  Indicator Circuit
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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.

Table 1. *a ECU-IG2 NO. 1 *b Combination Meter Assembly *c from IG2 Relay *d Headlight Leveling ECU Assembly
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WIRING DIAGRAM

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PROCEDURE


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    CHECK HEADLIGHT LEVELING ECU ASSEMBLY (INPUT SIGNAL)


    1. A0006JAE01

      Disconnect the A29 headlight leveling ECU assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A29-6 (WNG) - Body ground Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      Table 2. Text in Illustration
      *a

      Front view of wire harness connector

      (to Headlight Leveling ECU Assembly)

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


    1. Disconnect the H14 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A29-6 (WNG) - H14-3 (LVWG) Always Below 1 Ω
      A29-6 (WNG) - Body ground Always 10 kΩ or higher

    • OK

      GO TO METER / GAUGE SYSTEM (Click here)

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR