mercury Workshop Repair Guides

Mercury Workshop Service and Repair Manuals

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Blower Ground-Side Switching Circuit Test|Page 7071 > < Blower Ground-Side Switching Circuit Test|Page 7069

Grand Marquis V8-281 4.6L SOHC (1992)

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Blower Motor: Testing and Inspection
Pinpoint Test C - High Blower Always on In All Switch Positions

II Symptom - High Blower Always On In All Switch Positions

Electrical

Refer to the Electrical Vacuum Troubleshooting manual for a complete schematic and wire colors.

Test Condition

Start engine, set control to MAX A/C, set blower switch to MED. If blower remains in high speeds:

Blower Ground-Side Switching Circuit Test|Page 7071 > < Blower Ground-Side Switching Circuit Test|Page 7069