| Last Modified: 11-27-2007 | 1.6 J | |
| Service Category: Vehicle Exterior | Section: Wiper/Washer | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000002OXN006X |
| Title: WIPER / WASHER: WIPER AND WASHER SYSTEM: DESCRIPTION (2008 LX570) | ||
|
Washer Motor Circuit |
DESCRIPTION
The windshield wiper ECU receives washer switch information from the front wiper switch, and operates the washer motor.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
INSPECT FRONT WASHER MOTOR |
|
(a) Remove the front washer motor
|
(b) Apply battery voltage to the windshield washer motor connector and check the operation of the windshield washer motor.
OK:
|
Measurement Condition |
Specified Condition |
|---|---|
|
Battery positive (+) → Terminal 1 Battery negative (-) → Terminal 2 |
Front washer motor operation is normal |
|
|
2. |
INSPECT REAR WASHER MOTOR |
|
(a) Remove the rear washer motor
|
(b) Apply battery voltage to the windshield washer motor connector and check the operation of the windshield washer motor.
OK:
|
Measurement Condition |
Specified Condition |
|---|---|
|
Battery positive (+) → Terminal 1 Battery negative (-) → Terminal 2 |
Rear washer motor operation is normal |
|
|
3. |
CHECK HARNESS AND CONNECTOR (FRONT WASHER MOTOR - BATTERY) |
|
(a) Disconnect the front washer motor connector. |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
1 - Body ground |
Engine switch on (IG) |
11 to 14 V |
|
|
4. |
CHECK HARNESS AND CONNECTOR (REAR WASHER MOTOR - BATTERY) |
|
(a) Disconnect the rear washer motor connector. |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
1 - Body ground |
Engine switch on (IG) |
11 to 14 V |
|
|
5. |
CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH - BODY GROUND) |
|
(a) Disconnect the E15 windshield wiper switch connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E15-2 (EW) - Body ground |
Always |
Below 1 Ω |
|
|
6. |
CHECK HARNESS AND CONNECTOR (FRONT WASHER MOTOR - WINDSHIELD WIPER SWITCH) |
|
(a) Disconnect the E15 windshield wiper switch connector. |
(b) Disconnect the washer motor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
2 - E15-3 (WF) |
Always |
Below 1 Ω |
|
2 - Body ground |
Always |
10 kΩ or higher |
|
|
7. |
CHECK HARNESS AND CONNECTOR (REAR WASHER MOTOR - WINDSHIELD WIPER SWITCH) |
|
(a) Disconnect the E16 windshield wiper switch connector. |
(b) Disconnect the washer motor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
2 - E16-5 (WR) |
Always |
Below 1 Ω |
|
2 - Body ground |
Always |
10 kΩ or higher |
|
|
|