Troubleshooting a Fan (VW Golf 1)

The fan motor operates at three speeds. Additional connected resistors reduce the voltage and the fan slows down. With direct flow of electric current, the fan rotates at full speed.

If the fan does not operate in any switch position, first check the corresponding fuse (see fuse table, chapter "Electrical wires and fuses").

For models manufactured after August 1977: if, despite a working fuse, the windscreen wipers also do not work, the cause is a defective unloading relay (see chapter "Devices").

Next, remove the heating lever flap (see the section "Removing the heating system drives").

First check the power supply to the fan switch.

Lay a sufficiently long cable from the positive terminal of the battery to the connection of the yellow wire of the fan motor.

(The information is available on the website: www.VWManual.ru)

If the fan does not work, then the motor is burnt out. It needs to be replaced.

If the fan only works when the switch is in position 2 and 3 or only in position 3, you need to check the switch. Read in the section "Checking the switch", chapter "Devices".

If the switch is OK, you need to check the additional resistances: is there an electric current flowing?.

To do this, pierce the yellow wire of the fan motor with the needle contact of the test lamp.

When the switch is in positions 1 and 2, the light should flash to confirm that the additional resistors are conducting current. Otherwise, replace the additional resistors.