Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSLEXUS2009ES 350 V6-3.5L (2GR-FE)REPAIR AND DIAGNOSISWIPER AND WASHER SYSTEMSWIPER SWITCHTESTING AND INSPECTION
2009 Lexus ES 350 V6-3.5L (2GR-FE)
Wiper Switch: Testing and Inspection
2009 Lexus ES 350 V6-3.5L (2GR-FE)SECTION Testing and Inspection
WIPER AND WASHER: WIPER SWITCH: INSPECTION
INSPECTION
1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY
(a) Check for continuity of the windshield wiper switch assembly.
(1) Measure the resistance according to the value(s) in the table below.
Standard resistance:
Front Wiper Switch
Front Washer Switch
(b) Intermittent Operation Check
(1) Connect the voltmeter (+) terminal to terminal E28-3 (+1) of the connector and the voltmeter (-) terminal to terminal E29-2 (EW).
(2) Connect a positive (+) battery lead to terminal E28-2 (+B) of the connector and a negative (-) battery lead to terminals E29-2 (EW) and E28-1 (+S).
(3) Turn the wiper switch to the INT position.
(4) Connect a positive (+) battery lead to terminal E28-1 (+S) of the connector for 5 seconds.
(5) Connect a negative (-) battery lead to terminal E28-4 (+2) of the connector. Operate the intermittent wiper adjustment ring and measure the voltage between terminals E28-3 (+1) and E29-2 (EW).
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.