AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM Diagnosis Circuit

DESCRIPTION

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

WIRING DIAGRAM

A01HQB5E10

INSPECTION PROCEDURE

PROCEDURE


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


    1. Disconnect the A34 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
      A34-15 (PRST) - I39-7 (SIL) Always Below 1 Ω
      A34-15 (PRST) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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