Up to 08/2009

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

DESCRIPTION

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

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

(a) Disconnect the T3 rain sensor connector.





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

Standard Resistance:





Text in Illustration





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

2. CHECK HARNESS AND CONNECTOR (RAIN SENSOR - WINDSHIELD WIPER SWITCH ASSEMBLY)

(a) Disconnect the F42 windshield wiper switch assembly connector.





(b) Disconnect the T3 rain sensor connector.

(c) 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 -- Continue to next step.

3. INSPECT RAIN SENSOR

(a) Reconnect the 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

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Up to 08/2009