DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
PERFORM ACTIVE TEST USING INTELLIGENT TESTER (FRONT WIPER MOTOR)
INSPECT FRONT WIPER MOTOR
CHECK HARNESS AND CONNECTOR (FRONT WIPER MOTOR - WINDSHIELD WIPER ECU AND BODY GROUND)
WIPER AND WASHER SYSTEM (w/ Rain Sensor) - Front Wiper Motor Circuit
DESCRIPTION
The windshield wiper ECU controls the wiper motor.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (FRONT WIPER MOTOR) |
Select the Active Test, use the intelligent tester to generate a control command, and then check the front wiper motor.
- When a Body No. 5 (windshield wiper ECU) related front wiper switch is on, Active Test items related to the front wiper switch are prohibited (double operation prohibition). Check that the front wiper switches are off before performing Active Test.
Body No. 5| Item | Test Details | Control Range | Diagnostic Note |
| Wiper Mot (HI) | Wiper motor HI operation | ON / OFF | - |
| Wiper Mot (LO) | Wiper motor LO operation | ON / OFF | - |
- OK:
- Front wiper motor operates.
| OK | |
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| PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE ()
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| 2.INSPECT FRONT WIPER MOTOR |
Remove the front wiper motor ().
Apply battery voltage to the front wiper motor and check the speed of the front wiper motor.
- OK:
for LHD| Measurement Condition | Specified Condition |
Battery positive (+) → Terminal 1 (+1)
Battery negative (-) → Terminal 5 (E) | Motor operates at low speed |
Battery positive (+) → Terminal 4 (+2)
Battery negative (-) → Terminal 5 (E) | Motor operates at high speed |
for RHD| Measurement Condition | Specified Condition |
Battery positive (+) → Terminal 5 (+1)
Battery negative (-) → Terminal 4 (E) | Motor operates at low speed |
Battery positive (+) → Terminal 3 (+2)
Battery negative (-) → Terminal 4 (E) | Motor operates at high speed |
| | REPLACE FRONT WIPER MOTOR ()
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| 3.CHECK HARNESS AND CONNECTOR (FRONT WIPER MOTOR - WINDSHIELD WIPER ECU AND BODY GROUND) |
Disconnect the A22 motor connector.
Disconnect the E83 ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
for LHD| Tester Connection | Condition | Specified Condition |
| A22-2 (B) - E83-8 (WIG) | Always | Below 1 Ω |
| A22-1 (+1) - E83-1 (+1) |
| A22-4 (+2) - E83-2 (+2) |
| A22-3 (+S) - E83-7 (+SM) |
| A22-5 (E) - Body ground |
| A22-3 (+S) - Body ground | Always | 10 kΩ or higher |
| A22-2 (B) - Body ground |
| A22-4 (+2) - Body ground |
| A22-1 (+1) - Body ground |
for RHD| Tester Connection | Condition | Specified Condition |
| A22-2 (B) - E83-8 (WIG) | Always | Below 1 Ω |
| A22-5 (+1) - E83-1 (+1) |
| A22-3 (+2) - E83-2 (+2) |
| A22-1 (+S) - E83-7 (+SM) |
| A22-4 (E) - Body ground |
| A22-1 (+S) - Body ground | Always | 10 kΩ or higher |
| A22-2 (B) - Body ground |
| A22-3 (+2) - Body ground |
| A22-5 (+1) - Body ground |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| OK | |
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| REPLACE WINDSHIELD WIPER ECU ()
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