Headlight Signal Circuit

LIGHTING (EXT): LIGHTING SYSTEM: Headlight Signal Circuit

Headlight Signal Circuit

DESCRIPTION

The headlight leveling ECU assembly detects the low beam headlights status.

WIRING DIAGRAM





INSPECTION PROCEDURE
NOTICE: First check that the low beam headlights operate normally.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (ENGINE ROOM JUNCTION BLOCK ASSEMBLY - ECU)




(a) Disconnect the A40 headlight leveling ECU assembly connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE