Where is the fuse for the heater motor?
Under the instrument panel, look under the glove box. On the right side of the fender wall you will find another fuse box.
How do you test a fan motor relay?
Connect a test light or multimeter to the ground (black lead). Turn the ignition key to the on position (engine off), and remove the relay. Using the probe, test all terminal sockets in the relay connector. Two of the four should have power.
Is there a way to test a blower motor resistor?
Place one lead of the Ohmmeter on terminal 1 of the resistor. Place the other lead on terminal 2 and check against specifications. Move the lead from terminal 2 to terminal 3 and check this reading against specifications. If this circuit is open, showing infinity on the Ohmmeter, the blower resistor must be replaced.
What should I do if my heater relay is not working?
Turn on the key and try the blower. Some relays may not activate until the car is running and have a built in delay so you may need to start the engine and wait a few seconds to see if your repair was successful. Depending on what you drive, this job could be a breeze or a nightmare.
How to replace a heater motor switch or relay?
Step 1: Replace the switch. At this point you should have the switch in a position to easily disconnect it. Be careful, there are usually locking tabs on the connector that have to be squeezed before it will release and pull off. The plastic connectors are brittle and break easily.
Where can I find the heater switch on my car?
The older your car is, the easier this job will be. Most of the time, the switch is accessed from the back of the dash panel and can only be reached by removing a few pieces of trim. Cardboard panels held on by plastic pins or screws cover the bottom of the dashboard and are easily removed.
What’s the difference between blower relay and AC relay?
If it says blower relay, you’re golden; if it says AC relay, you might have what you want. If it says cooling fan relay, it’s talking about the relay that controls the radiator fans. Some cars have something called a power relay or an “unloader” relay. These relays power the blower fan as well as some other accessories.