Rear Washer does not Operate
WIPER / WASHER: WIPER AND WASHER SYSTEM: Rear Washer does not Operate
- Rear Washer does not Operate
DESCRIPTION
The windshield wiper switch controls the rear washer motor and pump.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. READ VALUE USING TECHSTREAM (WINDSHIELD WIPER SWITCH)
(a) Use the Data List to check if the rear washer is functioning properly Scan Tool Testing and Procedures.
Main Body
OK:
On the Techstream screen, each item changes between ON and OFF according to the above chart.
NG -- INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY
OK -- Continue to next step.
2. PERFORM ACTIVE TEST USING TECHSTREAM (WASHER RR RELAY)
(a) Using the Techstream, perform the Active Test Scan Tool Testing and Procedures.
Main Body
OK:
The rear washer motor operates normally.
NG -- INSPECT WASHER RR RELAY
OK -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal
3. INSPECT WASHER RR RELAY
(a) Remove the WASHER RR relay from the engine room relay block, junction block.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPLACE WASHER RR RELAY
OK -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (BATTERY - WASHER RR RELAY)
(a) Remove the WASHER RR relay from the engine room relay block, junction block.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (WASHER RR RELAY - MAIN BODY ECU)
(a) Remove the WASHER RR relay from the engine room relay block, junction block.
(b) Disconnect the F8 main body 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 -- Continue to next step.
6. INSPECT REAR WASHER MOTOR AND PUMP ASSEMBLY
(a) Remove the rear washer motor and pump Removal.
(b) Apply battery voltage to the rear wiper motor and check the operation of the rear wiper motor.
OK:
NG -- REPLACE REAR WASHER MOTOR AND PUMP ASSEMBLY Removal
OK -- Continue to next step.
7. CHECK WIRE HARNESS (REAR WASHER MOTOR AND PUMP ASSEMBLY)
(a) Disconnect the A27 level warning switch 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.
8. CHECK HARNESS AND CONNECTOR (REAR WASHER MOTOR AND PUMP ASSEMBLY - WASHER RR RELAY AND BODY GROUND)
(a) Disconnect the A27 rear washer motor connector.
(b) Remove the WASHER RR relay from the engine room relay block, junction block.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal
9. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY
(a) Remove the windshield wiper switch Testing and Inspection.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPLACE WINDSHIELD WIPER SWITCH ASSEMBLY Removal
OK -- Continue to next step.
10. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH ASSEMBLY - MAIN BODY ECU AND BODY GROUND)
(a) Disconnect the F20 and F21 windshield wiper switch connectors.
(b) Disconnect the F10 main body 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 MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal