LIGHTING SYSTEM Diagnosis Circuit

DESCRIPTION

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

WIRING DIAGRAM

A01J3JJE02

INSPECTION PROCEDURE

Tech Tips

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

PROCEDURE


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


    1. Disconnect the H17 headlight leveling ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H17-15 (PRST) - D3-7 (SIL) Always Below 1 Ω
      H17-15 (PRST) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE HEADLIGHT LEVELING ECU ASSEMBLY Click here