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Home >> Mercury >> 2005 >> Mountaineer 2WD V8-4.6L SOHC VIN W >> Repair and Diagnosis >> Wiper and Washer Systems >> Testing and Inspection >> Pinpoint Tests >> Test F: The Low Rear Wiper Speed Does Not Operate Correctly

Test F: The Low Rear Wiper Speed Does Not Operate Correctly

PINPOINT TEST F: THE LOW REAR WIPER SPEED DOES NOT OPERATE CORRECTLY


F1-F4:






F5:






Normal Operation
Under normal operation, the rear window wiper motor receives open and ground inputs from the steering column multifunction switch through circuits 410 (WH/OG) and 411 (BK/LB) to activate the wiper to the appropriate speeds.

Possible Causes
- Open in circuits 410 (WH/OG), 411 (BK/LB) or 1302 (WH/LG)
- Inoperative rear window wiper motor
- Inoperative steering column multifunction switch