LIGHTING SYSTEM Diagnosis Circuit

DESCRIPTION

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

WIRING DIAGRAM

A002QO2E01
*1 Headlight Leveling ECU Assembly

PROCEDURE


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

    A002NT1E02
    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

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR