Headlight Cleaner Switch Circuit
WIPER / 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. INSPECT HEADLIGHT CLEANER CONTROL RELAY (H SIGNAL)
(a) Disconnect the A3 headlight cleaner control relay connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Text in Illustration
NG -- INSPECT HEADLIGHT CLEANER SWITCH ASSEMBLY
OK -- Continue to next step.
2. INSPECT HEADLIGHT CLEANER CONTROL RELAY (FRWA SIGNAL)
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Text in Illustration
NG -- CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - FRONT CONTROLLER)
OK -- Continue to next step.
3. INSPECT HEADLIGHT CLEANER CONTROL RELAY (HDLO SIGNAL)
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Text in Illustration
NG -- CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - MAIN BODY ECU RH)
OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures
4. INSPECT HEADLIGHT CLEANER SWITCH ASSEMBLY
(a) Remove the headlight cleaner switch assembly Components.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE HEADLIGHT CLEANER SWITCH ASSEMBLY Components
OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (HEAD LP RELAY - HEADLIGHT CLEANER CONTROL RELAY)
5. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - FRONT CONTROLLER)
(a) Disconnect the 2F front controller connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE FRONT CONTROLLER (MULTIPLEX NETWORK BODY ECU)
6. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - MAIN BODY ECU RH)
(a) Disconnect the A36 main body ECU RH (cowl side junction block RH) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPAIR OR REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)