Headlight Signal Circuit

WIPER / WASHER: WIPER AND WASHER SYSTEM: Headlight Signal Circuit
- Headlight Signal Circuit

DESCRIPTION

The headlight cleaner control relay detects the low beam headlights status.

WIRING DIAGRAM





INSPECTION PROCEDURE

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

PROCEDURE

1. CHECK HEADLIGHT CLEANER CONTROL RELAY (HDLO VOLTAGE)

(a) Disconnect the A32 headlight cleaner control relay connector.





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

Standard Voltage:





Text in Illustration





NG -- CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - HEADLIGHT CLEANER CONTROL RELAY)

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table

2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - HEADLIGHT CLEANER CONTROL RELAY)

(a) Disconnect the G46 main body ECU.

(b) Disconnect the A32 headlight cleaner control relay connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal