Blower Motor: Testing and Inspection

Blower Motor Noise Diagnosis:

BLOWER MOTOR AND WHEEL ASSEMBLY
Vibration and/Or Noise Diagnosis
The blower speed switch, in conjunction with the resistor block, supplies the blower motor with varied voltage.

Caution: Stay clear of the blower motor and resistor block (Hot). Do not operate the blower motor with the resistor block removed from the heater A/C housing.

Refer to the Blower Motor Vibration/Noise chart above for diagnosis.