Diagnosis And Testing - Blower Motor: Operation

Possible causes of an inoperative blower motor include:

• Open fuse
• Inoperative A/C heater module
• Inoperative blower motor
• Inoperative blower motor power module
• Inoperative blower motor relay
• Inoperative blower motor switch
• Inoperative blower motor wiring or wire harness connectors