Wiper and Washer Switch Circuit

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

DESCRIPTION

The manual operation signals are sent to the main body ECU.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK VEHICLE CONDITION

(a) Check whether the rear wiper and washer systems operate normally.

Result:

C -- INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY

B -- INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY
A -- Continue to next step.

2. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY

(a) Remove the windshield wiper switch assembly.

(b) Inspect the rear wiper switch.

(1) Measure the resistance.

Standard resistance:

(d) Reinstall the the windshield wiper switch assembly.

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

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

(a) Disconnect the E19 windshield wiper switch connector.

(b) Measure the resistance.

Standard resistance:

(c) Reconnect the windshield wiper switch connector.

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

4. CHECK HARNESS AND CONNECTOR (BATTERY - MAIN BODY ECU)

(a) Measure the voltage.

Standard voltage:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MAIN BODY ECU

5. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY

(a) Remove the windshield wiper switch assembly.

(b) Measure the resistance.

Standard resistance:

(c) Reinstall the the windshield wiper switch assembly.

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

6. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH - MAIN BODY ECU, BODY GROUND)

(a) Disconnect the E8 main body ECU connector.

(b) Measure the resistance.

Standard resistance:

(c) Reconnect the main body ECU connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

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

7. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY

(a) Remove the windshield wiper switch assembly.

(b) Measure the resistance.

Standard resistance:

(c) Reinstall the the windshield wiper switch assembly.

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

8. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH - MAIN BODY ECU, BODY GROUND)

(a) Disconnect the E7 main body ECU connector.

(b) Measure the resistance.

Standard resistance: