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 MANUALSFORD2010MUSTANG BASE, 2D COUPE, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 564 (WIPER SYSTEM & WASHER SYSTEM)DIAGNOSIS AND TESTINGWIPERS AND WASHERSSYMPTOM TABLE

2010 Ford Mustang Base, 2D Coupe, Automatic

Symptom Table

2010 Ford Mustang Base, 2D Coupe, AutomaticSECTION Symptom Table

WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM TABLE

Condition	Possible Sources	Action
No communication with the smart junction box (SJB) module	Circuitry SJB	REFER to PINPOINT TEST A: NO COMMUNICATION WITH THE SMART JUNCTION BOX (SJB) .
The wipers are inoperative	Fuse Wiper switch Wiper high current relay Windshield wiper motor and module Circuitry Smart junction box (SJB)	GO to PINPOINT TEST A .
The rear window wiper is inoperative	Fuse Wiper switch Ignition switch Circuitry Rear window wiper motor	GO to PINPOINT TEST B .
The wipers stay on continuously	Wiper switch Circuitry Windshield wiper motor	GO to PINPOINT TEST C .
The rear window wiper stays on continuously	Rear window wiper motor Wiper switch Circuitry	GO to PINPOINT TEST D .
The high/low wiper speeds do not operate correctly (intermittent wiper mode OK)	Wiper switch Circuitry Windshield wiper motor	GO to PINPOINT TEST E .
The intermittent wiper speed does not operate correctly (high/low speeds OK)	Wiper switch Circuitry Windshield wiper motor	GO to PINPOINT TEST F .
The wipers do not operate correctly - rear window	Wiper switch Circuitry Rear window wiper motor	GO to PINPOINT TEST G .
The wipers do not operate correctly in the MIST position	Wiper switch Circuitry Windshield wiper motor	GO to PINPOINT TEST H .
The wash and wipe function is inoperative - rear	Wiper switch Circuitry Rear window wiper motor Washer pump	GO to PINPOINT TEST I .
The washer pump is inoperative	Washer pump Wiper switch Windshield wiper motor Rear window wiper motor (Freestyle only) Circuitry	GO to PINPOINT TEST J .

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.