Lexus IS250 IS220d GSE20 ALE20 - WIPER AND WASHER
PERFORM ACTIVE TEST USING INTELLIGENT TESTER (FRONT WIPER MOTOR)
INSPECT WINDSHIELD WIPER MOTOR ASSEMBLY
CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER MOTOR - MAIN BODY ECU LH (COWL SIDE J/B LH))
WIPER AND WASHER SYSTEM - Front Wiper Motor Circuit
DESCRIPTION
The main body ECU LH (cowl side J/B LH) controls the front wiper motor.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (FRONT WIPER MOTOR) |
Connect the intelligent tester to the DLC3.
Turn the engine switch on (IG) and turn the intelligent tester main switch on.
Select the items below using ACTIVE TEST and then check that the front wiper motor operates.
| Item | Test Details | Diagnostic Note |
| Wiper Motor HI | Front wiper motor HI operation ON / OFF | - |
| Wiper Motor LO | Front wiper motor LO operation ON / OFF | - |
- OK:
- Front wiper motor operates.
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| OK | ||
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| 2.INSPECT WINDSHIELD WIPER MOTOR ASSEMBLY |
Remove the windshield wiper motor assembly .
Check the LO operation (LHD).
Connect the positive (+) battery lead to terminal 1 (+1) of the connector, and the negative (-) battery lead to terminal 5 (E), and check that the motor operates at low speed.
Check the HI operation (LHD).
Connect the positive (+) battery lead to terminal 4 (+2) of the connector, and the negative (-) battery lead to terminal 3 (+S), and check that the motor operates at high speed.
Check the LO operation (RHD).
Connect the positive (+) battery lead to terminal 5 (+1) of the connector, and the negative (-) battery lead to terminal 4 (E), and check that the motor operates at low speed.
Check the HI operation (RHD).
Connect the positive (+) battery lead to terminal 3 (+2) of the connector, and the negative (-) battery lead to terminal 1 (+S), and check that the motor operates at high speed.
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| OK | |
| 3.CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER MOTOR - MAIN BODY ECU LH (COWL SIDE J/B LH)) |
Disconnect the A19 windshield wiper motor assembly connector.
Disconnect the A30 main body ECU LH (cowl side J/B LH) connector.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
- LHD:
Tester Connection Condition Specified Condition LK-9 (WIG) - A19-2 (B) Always Below 1 Ω A30-1 (S/S) - A19-1 (+1) Always Below 1 Ω A30-2 (+2) - A19-4 (+2) Always Below 1 Ω A30-3 (S/M) - A19-3 (+S) Always Below 1 Ω A19-3 (+S) - Body ground Always 10 kΩ or higher A19-2 (B) - Body ground Always 10 kΩ or higher A19-4 (+2) - Body ground Always 10 kΩ or higher A19-5 (E) - Body ground Always Below 1 Ω A19-1 (+1) - Body ground Always 10 kΩ or higher
- Standard resistance:
- RHD:
Tester Connection Condition Specified Condition LK-9 (WIG) - A19-2 (B) Always Below 1 Ω A30-1 (S/S) - A19-5 (+1) Always Below 1 Ω A30-2 (+2) - A19-3 (+2) Always Below 1 Ω A30-3 (S/M) - A19-1 (+S) Always Below 1 Ω A19-1 (+S) - Body ground Always 10 kΩ or higher A19-2 (B) - Body ground Always 10 kΩ or higher A19-3 (+2) - Body ground Always 10 kΩ or higher A19-4 (E) - Body ground Always Below 1 Ω A19-5 (+1) - Body ground Always 10 kΩ or higher
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| OK | ||
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