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 MANUALSFORD1999ECONOLINE E350 1 TON V10-6.8L VIN SREPAIR AND DIAGNOSISSTARTING AND CHARGINGSTARTING SYSTEMIGNITION SWITCHTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSMULTI-FUNCTION SWITCH ELECTRICAL TEST
1999 Ford Econoline E350 1 Ton V10-6.8L VIN S
Multi-Function Switch Electrical Test
1999 Ford Econoline E350 1 Ton V10-6.8L VIN SSECTION Multi-Function Switch Electrical Test
1. Measure the resistance between the multi-function switch terminals:
Part 1 Of 2:
Part 2 Of 2:
If the resistances are as specified, the multi-function switch is OK. Return the multi-function switch to the vehicle. Test the system for normal operation.
If the resistances are not as specified, replace the multi-function switch. Test the system for normal operation.
Component Testing Procedure:
Terminals:
TURN SIGNAL PORTION - MULTI-FUNCTION SWITCH
Component Testing Procedure:
Terminals:
Schematic:
WINDSHIELD WIPER/WASHER PORTION - MULTI-FUNCTION 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.