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 MANUALSMERCURY2005MARINER 2WD V6-3.0L VIN 1REPAIR AND DIAGNOSISWIPER AND WASHER SYSTEMSTESTING AND INSPECTIONPINPOINT TESTSTEST F: THE LOW SPEED AND INTERMITTENT WIPERS DO NOT OPERATE CORRECTLY - FRONT
2005 Mercury Mariner 2WD V6-3.0L VIN 1
Test F: The Low Speed and Intermittent Wipers Do Not Operate Correctly - Front
2005 Mercury Mariner 2WD V6-3.0L VIN 1SECTION Test F: The Low Speed and Intermittent Wipers Do Not Operate Correctly - Front
PINPOINT TEST F: THE LOW SPEED AND INTERMITTENT WIPERS DO NOT OPERATE CORRECTLY - FRONT
Normal Operation
The multifunction switch receives power through circuit 950 (WH/BK). The windshield wiper motor receives power from the multifunction switch through circuit 28 (BK/PK) for low or intermittent speed and through circuit 56 (DB/OG) for high speed. The windshield wiper motor also receives power from the SJB fuse 25 (20A) through circuit 941 (BK/WH) for park. A return is supplied back to the multifunction switch from the windshield wiper motor through circuit 65 (DG). The windshield wiper motor and the multifunction switch are grounded through circuit 57 (BK).
Possible Causes
- circuit 28 (BK/PK) open or short to ground
- windshield wiper motor
- multifunction switch
F1-F2:
F3:
Normal Operation
The multifunction switch receives power through circuit 950 (WH/BK). The windshield wiper motor receives power from the multifunction switch through circuit 28 (BK/PK) for low or intermittent speed and through circuit 56 (DB/OG) for high speed. The windshield wiper motor also receives power from the SJB fuse 25 (20A) through circuit 941 (BK/WH) for park. A return is supplied back to the multifunction switch from the windshield wiper motor through circuit 65 (DG). The windshield wiper motor and the multifunction switch are grounded through circuit 57 (BK).
Possible Causes
- circuit 28 (BK/PK) open or short to ground
- windshield wiper motor
- multifunction switch
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.