DESCRIPTION When the
windshield washer motor and pump assembly receives signals from the
windshield wiper switch assembly, it operates to spray washer fluid from
the washer nozzle sub-assemblies. WIRING DIAGRAM
 CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses for circuits related to this system before performing the following procedure.
- Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here 
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 following menus: Body Electrical / Main Body / Active Test.
(e) Perform the Active Test according to the display on the Techstream. Body Electrical > Main Body > Active Test
|
Tester Display | Measurement Item |
Control Range | Diagnostic Note | |
Front Washer Relay | Function to operate the windshield washer motor and pump assembly |
OFF or ON | - | Body Electrical > Main Body > Active Test
|
Tester Display | | Front Washer Relay |
OK: Windshield washer motor and pump assembly operates normally.
| OK |
 | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
NG |
 | |
| 2. |
INSPECT WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY |
(a) Remove the windshield washer motor and pump assembly. Click here
(b) Inspect the windshield washer motor and pump assembly.
Click here
| NG |
| REPLACE WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY |
|
OK | |
| |
(a) Inspect the WASHER relay.
Click here
| NG |
| REPLACE WASHER RELAY |
|
OK | |
| |
| 4. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE - WASHER RELAY) |
(a) Measure the voltage according to the value(s) in the table below. Standard Voltage: |
Tester Connection | Condition |
Specified Condition | |
1 (WASHER relay) - Body ground |
Engine switch off | Below 1 V | |
Engine switch on (IG) |
11 to 14 V |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 5. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE - WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY) |
(a) Measure the voltage according to the value(s) in the table below. Standard Voltage: |
Tester Connection | Condition |
Specified Condition | |
A27-1 (B) - Body ground |
Engine switch off | Below 1 V | |
Engine switch on (IG) |
11 to 14 V |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 6. |
CHECK HARNESS AND CONNECTOR (WASHER RELAY - WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
5 (WASHER relay) - A27-2 (SW) |
Always | Below 1 Ω | |
5 (WASHER relay) or A27-2 (SW) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 7. |
CHECK HARNESS AND CONNECTOR (WASHER RELAY - BODY GROUND) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
3 (WASHER relay) - Body ground |
Always | Below 1 Ω |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 8. |
CHECK HARNESS AND CONNECTOR (WASHER RELAY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Disconnect the G32 main body ECU (multiplex network body ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
2 (WASHER relay) - G32-12 (FWSR) |
Always | Below 1 Ω | |
2 (WASHER relay) or G32-12 (FWSR) - Body ground |
Always | 10 kΩ or higher |
| OK |
| REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR | | 
