Blower Motor: Testing and Inspection

Inspection Flow:

TROUBLE DIAGNOSIS PROCEDURE FOR BLOWER MOTOR

SYMPTOM:
- Blower motor operation is malfunctioning.
- Blower motor operation is malfunctioning under out of starting fan speed control.

Steps 1 - 2:

Steps 3 - 4:

Steps 5 - 6:

Steps 7 - 8:

Steps 9 - 10:

DIAGNOSTIC PROCEDURE

SYMPTOM: Blower motor operation is malfunctioning under Starting Fan Speed Control.

COMPONENT INSPECTION




Blower Motor
Confirm smooth rotation of the blower motor.
- Ensure that there are no foreign particles inside the intake unit.







Fan Control Amp.
Check continuity between terminal Nos. 2 and 3.