Magnum SRT-8 V8-6.1L VIN 3 (2006)
Blower Motor: Testing and Inspection
BLOWER MOTOR
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE
THE NEGATIVE BATTERY (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO
DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. FAILURE TO TAKE THE PROPER PRECAUTIONS
COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY OR DEATH.
NOTE: For circuit descriptions and diagrams, refer to Air Conditioning/Heater, Wiring Diagrams.
OPERATION
Possible causes of an inoperative blower motor include:
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Faulty fuse
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Faulty blower motor resistor or power module (depending on application)
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Faulty blower motor switch
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Faulty mode control switch
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Faulty blower motor
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Faulty blower motor circuit wiring or wire harness connectors
Possible causes of the blower motor not operating in all speeds include:
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Faulty fuse
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Faulty blower motor resistor or power module (depending on application)
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Faulty blower motor switch
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Faulty blower motor
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Faulty blower motor circuit wiring or wire harness connectors
VIBRATION
Possible causes of blower motor vibration include:
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Improper blower motor mounting
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Improper blower wheel mounting
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Deformed blower wheel
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Out of balance blower wheel due to foreign material in the wheel
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Faulty blower motor
NOISE
To determine if the blower motor is the source of the noise, simply switch the blower motor from Off to On. To verify that the blower motor is the source
of the noise, unplug the blower motor wire harness connector and operate the heater-A/C system. If the noise goes away, possible causes include:
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Foreign material in the HVAC air inlet housing
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Improper blower motor mounting
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Improper blower wheel mounting
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Faulty blower motor
