Warning Light Circuit

LIGHTING: LIGHTING SYSTEM: Warning Light Circuit

Warning Light Circuit

DESCRIPTION

Headlight beam level control ECU sends the warning signal to the combination meter.

WIRING DIAGRAM





INSPECTION PROCEDURE
HINT: Check if the combination meter operation is normal before performing the following procedure.

PROCEDURE

1. CHECK HEADLIGHT BEAM LEVEL CONTROL ECU




(a) Disconnect the H12 ECU connector.
(b) Measure the voltage of the wire harness side connector.
Standard voltage:






OK -- PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE
NG -- Continue to next step.

2. CHECK WIRE HARNESS (ECU - METER)




(a) Disconnect the H12 ECU connector.
(b) Disconnect the C10 meter connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE COMBINATION METER