AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM Diagnosis Circuit

DESCRIPTION

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

WIRING DIAGRAM

A01QP35E04
*1 Headlight Leveling ECU Assembly

CAUTION / NOTICE / HINT

Tech Tips

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 Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR