AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM Diagnosis Circuit

DTC Code DTC Name
Diagnosis Circuit

DESCRIPTION

The headlight leveling ECU outputs DTC information to the GTS via this circuit.

WIRING DIAGRAM

E227422E04

CAUTION / NOTICE / HINT

Tip:

After replacing the headlight leveling ECU, initialization of the ECU is necessary.

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PROCEDURE

  1. CHECK HARNESS AND CONNECTOR (DLC3 - HEADLIGHT LEVELING ECU ASSEMBLY)

    1. Disconnect the A67 headlight leveling ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A67-15 (PRST) - G14-7 (SIL)

      Always

      Below 1 Ω

      A67-15 (PRST) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE HEADLIGHT LEVELING ECU ASSEMBLY

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    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR