FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM
:
Car repair manuals for everyone.
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Mercury
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1994
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Grand Marquis V8-281 4.6L SOHC
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Repair and Diagnosis
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Brakes and Traction Control
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Antilock Brakes / Traction Control Systems
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Testing and Inspection
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Pinpoint Tests
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A Warning Indicator ON/Brake Warning OFF)
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A7 Check Main Relay Coil
A7 Check Main Relay Coil
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Remove main power relay.
Relay Terminals:
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Measure resistance between main relay pins 85 and 86.
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Is resistance between 45 and 90 ohms?
YES --
Service or replace cable harness.
NO --
Replace main relay.