Blower Motor: Testing and Inspection

BLOWER UNIT
1. Check the link mechanism for operation.
2. Check the heater core for restriction or water linkage.
3. Check the water valve for operation and clogging.




BLOWER MOTOR
1. Connect the blower motor terminals directly to the battery and check that the blower motor operates smoothly.
2. Next, reverse the polarity and check that the blower motor operates smoothly in the reverse direction.