Headlight Cleaner Switch Circuit

WIPER AND WASHER: WIPER AND WASHER SYSTEM: Headlight Cleaner Switch Circuit

Headlight Cleaner Switch Circuit

DESCRIPTION

This circuit detects the conditions (on or off) of the headlight cleaner switch.
The headlight cleaner control relay receives the following signals:

- Headlight cleaner switch signal
- Headlight operating signal
- Daytime running light operating signal
- Front washer motor operating signal

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK MAIN BODY ECU RH (COWL SIDE J/B RH) (HDLO SIGNAL)




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






NG -- CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - MAIN BODY ECU RH)
OK -- Continue to next step.
2. INSPECT FRONT CONTROLLER (ENGINE ROOM NO. 2 J/B) (FRWA SIGNAL)
(a) Measure the voltage according to the value(s) in the table below.





Standard voltage:






NG -- CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - FRONT CONTROLLER)
OK -- Continue to next step.
3. CHECK HEADLIGHT CLEANER SWITCH ASSEMBLY
(a) Disconnect the connector from the headlight cleaner switch assembly.




(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.
4. CHECK MAIN BODY ECU RH (COWL SIDE J/B RH) (HRLY SIGNAL)




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






NG -- CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER SWITCH ASSEMBLY - MAIN BODY ECU RH)
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
5. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - MAIN BODY ECU RH)




(a) Disconnect the A3 headlight cleaner control relay connector.
(b) Disconnect the A36 main body ECU RH (cowl side J/B RH) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - MAIN BODY ECU RH)
OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU RH (COWL SIDE J/B RH) - BATTERY)
6. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - FRONT CONTROLLER)
(a) Disconnect the 2F front controller (engine room No. 2 J/B) connector.
(b) Measure the resistance according to the value(s) in the table below.





Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - FRONT CONTROLLER)
OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (FRONT CONTROLLER (OVERHEAD J/B) - BATTERY)
7. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER SWITCH ASSEMBLY - MAIN BODY ECU RH)




(a) Disconnect the J13 headlight cleaner switch assembly connector.
(b) Disconnect the RL main body ECU RH (cowl side J/B RH) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (HEADLIGHT CLEANER SWITCH ASSEMBLY - MAIN BODY ECU RH)
OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU RH (COWL SIDE J/B RH) - BATTERY)