Wiper and Washer Switch Circuit

WIPER / WASHER: WIPER AND WASHER SYSTEM: Wiper and Washer Switch Circuit
- Wiper and Washer Switch Circuit

DESCRIPTION

This circuit provides power to operate the windshield wiper switch. The manual operation signals are sent to the windshield wiper ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (ECU-IG No. 1)

(a) Remove the ECU-IG No. 1 fuse from the cowl side junction block LH.

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

Standard Resistance:





NG -- REPLACE FUSE
OK -- Continue to next step.

2. READ VALUE USING TECHSTREAM (WINDSHIELD WIPER SWITCH)

(a) Using the Techstream, read the Data List.

Body No. 5





Body No. 4





OK:

The display is as specified in the normal condition.

NG -- CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH - BATTERY AND BODY GROUND)

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures

3. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH - BATTERY AND BODY GROUND)

(a) Disconnect the E16 switch connector.





(b) Disconnect the E89 ECU connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE WINDSHIELD WIPER SWITCH Removal