Wiper and Washer Switch Circuit

WIPER / WASHER: WIPER AND WASHER SYSTEM (w/ Rain Sensor): Wiper and Washer Switch Circuit
- Wiper and Washer Switch Circuit

DESCRIPTION

This circuit detects the state of the windshield wiper switch assembly (front wiper switch and front washer switch) and sends it to the windshield wiper relay assembly.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY

(a) Remove the windshield wiper switch assembly Removal.





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

Standard Resistance:

Front Wiper Switch
Front Washer Switch
Adjusting Ring*1














HINT
*1: The rain sensor sensitivity can be adjusted by the windshield wiper switch adjusting ring.

Text in Illustration





NG -- REPLACE WINDSHIELD WIPER SWITCH ASSEMBLY Removal
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (WIPER SWITCH - WIPER RELAY AND BODY GROUND)

(a) Disconnect the D23 and D25 windshield wiper switch assembly connectors.





Text in Illustration





(b) Disconnect the D78 windshield wiper relay assembly connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Wiper and Washer System (w/ Rain Sensor)