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Home >> Ford >> 2003 >> Thunderbird V8-3.9L VIN A >> Repair and Diagnosis >> Wiper and Washer Systems >> Testing and Inspection >> Pinpoint Tests >> Test N
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Test N

PINPOINT TEST N: THE WIPERS ARE INOPERATIVE


Test N1:






Test N2-N4:






Test N5-N7:






Normal Operation
The windshield wiper motor receives inputs from the multifunction switch circuits 31S-XL50 (BK/OG), 31S-XL51 (BK/GN), 31S-XL52 (BK/RD), and 31S-XL53 (BK/WH). The wiper motor module (internal) controls the wiper run/park relay (internal) using internal circuitry to control the windshield wiper motor in conjunction with the wiper HI/LO relay (internal).

Possible Causes
- circuit 15-KA39 (GN/OG) open
- circuit 31-KA9 (BK/OG) open
- circuit 30-KA40 (RD) open
- circuit 31-KA19 (BK/RD) open
- circuit 91-KA8 (BN/RD) open
- circuit 31S-XL50 (BK/OG) open
- circuit 31S-XL51 (BK/GN) open
- circuit 31S-XL52 (BK/RD) open
- circuit 31S-XL53 (BK/WH) open
- multifunction switch
- windshield wiper motor
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