Car Heater Fan Switch Not Working

Rotated all the pdc relays around they have the same id other than abs pump.
Car heater fan switch not working. Follow the wiring harness as carefully as possible between these two locations looking for burned out spots or breaks in the wire. Check for blown fuses and replace them to restore normal functionality. Blower still does not work. Blower still does not work.
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. Checked continuity of 40 amp blower fuse. The motor is usually earthed to the body by a separate wire. 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.
Rotated all the unmarked relays around in the junction box. There is no battery to operate the blower. So it s advisable that you get the switch checked too. A blown fuse might just be the reason your car heater fan is not working.
A problem with the switch which turns the fan on or off might also be the source of the problem. The system is very simple and rarely goes wrong. This symptom reveals the aging weaknesses in the resistor that usually makes all the magic happen.