Washer Motor Circuit

WIPER / WASHER: WIPER AND WASHER SYSTEM: Washer Motor Circuit
- Washer Motor Circuit

DESCRIPTION

The front controller receives washer switch condition (on or off) information from the windshield wiper switch assembly, and operates the WASH relay.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Body No. 5 / Active Test.

(e) Check the operation.

Body No. 5 (Front Controller)





OK:

Washer motor operates.

NG -- INSPECT WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY

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

2. INSPECT WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY

HINT
The following check should be performed with the windshield washer motor and pump assembly installed to the washer jar.

(a) Fill the washer jar with washer fluid.

(b) Connect a positive (+) battery lead to terminal 1 of the washer motor, and a negative (-) battery lead to terminal 2.





(c) Check that washer fluid flows from the washer jar.

OK:

Washer fluid is pumped from the washer jar.

NG -- REPLACE WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY Components
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY - BODY GROUND)

(a) Disconnect the A4 windshield washer motor and pump assembly connector.





(b) 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.

4. CHECK HARNESS OR CONNECTOR (FRONT CONTROLLER - WINDSHIELD WIPER MOTOR AND PUMP ASSEMBLY)

(a) Disconnect the 2F front controller connector.





(b) 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.

5. CHECK HARNESS AND CONNECTOR (BATTERY - FRONT CONTROLLER)

(a) Disconnect the 2E front controller connector.





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

Standard Voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE FRONT CONTROLLER (MULTIPLEX NETWORK BODY ECU)