LIGHTING SYSTEM Diagnosis Circuit

DESCRIPTION

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

WIRING DIAGRAM

A01IREHE01

INSPECTION PROCEDURE

PROCEDURE


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

    A01IPKEE12
    Text in Illustration
    *1

    Front view of wire harness connector

    (to Headlight Leveling ECU Assembly)
    *2 DLC3

    1. Disconnect the A49 ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A49-15 (INIT) - H16-7 (SIL) Always Below 1 Ω
      A49-15 (INIT) - 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