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Home >> Ford >> 2006 >> Ranger 2WD L4-2.3L VIN D >> Repair and Diagnosis >> Heating and Air Conditioning >> Testing and Inspection >> Pinpoint Tests >> Test G: The Blower Motor Does Not Operate Correctly
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Test G: The Blower Motor Does Not Operate Correctly

PINPOINT TEST G: THE BLOWER MOTOR DOES NOT OPERATE CORRECTLY


G1-G2:






G3-G4:






G5-G6:






Normal Operation
Under normal operation, ground for the blower motor is supplied by the blower motor resistor or blower switch through circuit 261 (OG/BK). In LOW, the resistor is grounded through circuit 57 (BK). In MED-LOW and HIGH, the resistor is grounded to the blower switch through circuit 754 (LG/WH) and 752 (YE/RD). In HIGH, the blower motor is directly grounded to the blower switch through circuit 261 (OG/BK). The blower switch is grounded through circuit 57 (BK).

Possible Causes
- An open in circuit 57 (BK), 261 (OG/BK), 752 (YE/RD) or 754 (LG/WH)
- A short to ground in circuit 261 (OG/BK), 752 (YE/RD) or 754 (LG/WH)
- A short together circuits 261 (OG/BK), 752 (YE/RD) or 754 (LG/WH)
- Blower motor resistor
- Blower motor switch
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