Vw Radiator Fan Switch Wiring

Total cost in parts that did nothing 220 00.

Vw radiator fan switch wiring. The radiator switch being 2 pin. Its job is to detect the water temperature and if it is too hot then the switch will activate the electric fans to help cool the water. A radiator fan requires an average of 15 amps to operate. A second terminal becomes hot only when the key is on.

Diagnosing a non working radiator fan testing fan switch w a soda. The fan uses a relay in the fuse relay box under the hood. Sorta like there s 4 conditions that will turn off the compressor. At least they didnt in my case and i replaced the fan switch radiator fan switch relay under the battery box and the entire fuse box on top of the battery and i brought test fans froma junk yard for 50 beans.

I spent that again on a complete water pump kit at ecs hell for 350 u can get a complte coolent pump kit with everything needed and a. Check out free battery charging and engine diagnostic testing while you are in store. From what i can tell about the wiring schematics the ambient temp switch ac evap switch ac pressure switch and coolant fan thermoswtich all seem to be wired in series to the ac compressor clutch. Cooling fan switch closes the circuit to engage the cooling fan when the optimum temperature is reached.

Vw a1 a2 a3 a4. Vw audi fan relay cooling fan control unit module relay. Operating the fan manually is just as effective and in some cases moreso since it won t be forgotten. This is the terminal that actuates the relay.

I have a 1981 vw rabbit pickup with 1 6l diesel. The cooling switch also sold in a universal format is used to trigger the relay coil and. The relay has four terminals one that is hot all the time even with the key off. From the fuse box there is a single wire usually coming from the fan relay to the fan via the switch on the radiator.

I have had the fan control module changed so i can eliminate this but without a wiring diagram i don t know if there is anything in the circuit that may 15 since the radiator fan doesn t kick on when the ac is engaged and the blower turned on then i would be looking at a basic electrical issue as the a c relay the fuse or wire lastly the fuse box itself if it got wet wiring diagram. Radiator fan s quick check. Modifying the radiator fan to turn on manually is usually done because something in the system is not working properly and the vehicle owner does not want to replace a part usually due to the expense. Order volkswagen golf cooling fan switch radiator online today.

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