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camerontech, Technician
Category: Jeep
Satisfied Customers: 509
Experience:  diagnostic auto tech
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Ac/heater fan wont work. I've check fuses. Ect. Replaced

Customer Question

Ac/heater fan wont work. I've check fuses. Ect. Replaced resisted. Still nothing. It's a 2006 jeep commander
JA: Most vehicles have two fuse panels. Have you located both?
Customer: Yes there are all ok
JA: Are you fixing your Commander yourself? What have you tried so far?
Customer: Changed out the resister
JA: Anything else you want the mechanic to know before I connect you?
Customer: It just act dead
Submitted: 1 month ago.
Category: Jeep
Expert:  camerontech replied 1 month ago.

hi there

im cam, a licenced diagnostic tech

you will need to see if it a power supply problem or a ground control problem

check for power at the dark blue wire at the blower motor. there should be 12volts there with ignition on.

if not, there is a blower motor relay in the underhood fuse relay box to check

if power is good, than you will need to remove the heater control head assembly and check the connection at the back of it.

you will inspect the larger wire connector forr burnt and melted connector and wires.
these control units are bad for melting.

there is a black and light green wire, this is the fround supply for the blower control. make sure this is a good ground

apply this ground to each of the wires that go to the resistor. i have included a diargram for you

if the blower works after applying this ground than the control head is faulty

Expert:  camerontech replied 1 month ago.

hi there

let me know if i can help you any further!

please takea moment to rate me!

thanks and i appreciate positive ratings!