Headlight Cleaner Switch Circuit

WIPER AND WASHER SYSTEM: Headlight Cleaner Switch Circuit

Headlight Cleaner Switch Circuit

DESCRIPTION

This circuit sends the signal for the headlight cleaner control relay to operate the headlight cleaner motor and pump assembly. The signal is send when the headlight cleaner switch or the front washer switch is turned ON.
The headlight cleaner does not work while the multiplex network body computer sends the signal that the daytime running light system is in operation.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT HEADLIGHT CLEANER CONTROL RELAY





(a) Disconnect the connector from the headlight cleaner control relay.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- INSPECT HEADLIGHT CLEANER SWITCH ASSEMBLY
OK -- Continue to next step.
2. INSPECT HEADLIGHT CLEANER CONTROL RELAY





(a) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - BODY ECU)
OK -- Continue to next step.
3. INSPECT HEADLIGHT CLEANER CONTROL RELAY





(a) Measure the resistance according to the value(s) in the table below.
Standard resistance :






NG -- INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
4. INSPECT HEADLIGHT CLEANER SWITCH ASSEMBLY





(a) Disconnect the connector from the headlight cleaner switch.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE HEADLIGHT CLEANER SWITCH ASSEMBLY
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - INSTRUMENT PANEL J/B))
(a) Disconnect the connector from the headlight cleaner control relay and instrument panel J/B.





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










NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
6. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - BODY ECU)
(a) Disconnect the connector from the headlight cleaner and multiplex network body ECU.





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










NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
7. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY
(a) Inspect the windshield wiper switch assembly Removal.
NG -- REPLACE WINDSHIELD WIPER SWITCH ASSEMBLY
OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR