Diagnosis Circuit

LIGHTING (EXT): LIGHTING SYSTEM: Diagnosis Circuit
- Diagnosis Circuit

DESCRIPTION

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

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

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

(a) Disconnect the A46 headlight leveling ECU assembly connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Exterior Lighting System