Rain Sensor Circuit

WIPER / WASHER: WIPER AND WASHER SYSTEM: Rain Sensor Circuit
- Rain Sensor Circuit

DESCRIPTION

The windshield wiper relay assembly receives a signal from the rain sensor to control the auto wiper system.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY ASSEMBLY - RAIN SENSOR)

(a) Disconnect the F101 windshield wiper relay assembly connector.

(b) Disconnect the P7 rain sensor connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. INSPECT WINDSHIELD WIPER RELAY ASSEMBLY

(a) Reconnect the F101 windshield wiper relay assembly connector.





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

Standard Voltage:





Text in Illustration





NG -- REPLACE WINDSHIELD WIPER RELAY ASSEMBLY Components
OK -- Continue to next step.

3. INSPECT RAIN SENSOR

(a) Reconnect the P7 rain sensor connector.





(b) Connect an oscilloscope to the automatic light control sensor connector.

(c) Check for pulses.

OK:





Text in Illustration





NG -- REPLACE RAIN SENSOR Components

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures