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Home >> Ford >> 2007 >> Focus L4-2.3L VIN Z >> Repair and Diagnosis >> Heating and Air Conditioning >> Testing and Inspection >> Pinpoint Tests >> Test A: The Blower Motor Is Inoperative
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Test A: The Blower Motor Is Inoperative

PINPOINT TEST A: THE BLOWER MOTOR IS INOPERATIVE


A1-A3:






A3-A4:






Normal Operation
Under normal operation, the blower motor is supplied voltage through circuit 15-FA18 (GN/OG). The blower motor receives ground from the blower motor switch through circuit 31S-FA18 (BK/RD)/31S-FA33 (BK/OG). When the blower motor switch is in the HIGH position, the blower motor is grounded through the switch to circuit 31-FA25 (BK).

Possible Causes
- Fuse
- An open in circuit 15-FA18 (GN/OG), 31S-FA18 (BK/RD), 31S-FA33 (BK/OG) or 31-FA25 (BK)
- Blower motor
- Blower motor switch
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