Car Heater Fan Switch Not Working

Rotated all the unmarked relays around in the junction box.

Car heater fan switch not working.

Checked continuity of 40 amp blower fuse. Check for blown fuses and replace them to restore normal functionality. This symptom reveals the aging weaknesses in the resistor that usually makes all the magic happen. The motor is usually earthed to the body by a separate wire.

Blower still does not work. If any of these not so great for your car tricks gets your heater back to proper function this is a big indication that it s your heater switch that s on the fritz and causing your current cabin temp woes. The system is very simple and rarely goes wrong. Rotated all the pdc relays around they have the same id other than abs pump.

A problem with the switch which turns the fan on or off might also be the source of the problem. Look for a break in the wiring between the switch and the fan if the meter shows voltage or the light illuminates and you have tested the switch and motor. A blown fuse might just be the reason your car heater fan is not working. There is no battery to operate the blower.

The only fault that is likely to develop is that the fan stops working because of a break in the electrical circuit. Blower still does not work. This circuit consists of a feed wire from the fusebox to the on off switch on the dashboard or centre console and another wire from the switch to the heater motor.