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Home >> Ford >> 2008 >> Ranger 2WD V6-3.0L >> 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

Normal Operation
Under normal operation, ground for the blower motor is supplied by the blower motor resistor or blower switch through circuit CH430 (VT/OG). In LOW, the resistor is grounded through circuit GD123 (BK/GY). In MED-LOW and HIGH, the resistor is grounded to the blower switch through circuit CH428 (GN/WH) and CH429 (GY/BN). In HIGH, the blower motor is directly grounded to the blower switch through circuit CH430 (VT/OG). The blower switch is grounded through circuit GD121 (BK/YE).

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Blower motor resistor
- Blower motor switch


G1-G2:






G2-G3:






G4-G5:






G6:




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