Fan Troubleshooting

The fan motor has three speeds. Additional connected resistances reduce the voltage and the fan slows down. With direct current flow, the fan rotates at full speed.

If the fan does not work in any of the switch positions, check the appropriate fuse first (see fuse table, chapter "Electrical wires and fuses").

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

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

First check the power supply of the fan switch.

Lay a sufficiently long cable from "pluses" battery to the fan motor yellow wire connection.

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

If the fan only works when the switch is in positions 2 and 3, or only in position 3, check the switch. Read in the section "Switch test", chapter "Devices".

If the switch is in order, 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 control light.

When the switch is in positions 1 and 2, the lamp should flash as confirmation that the additional resistances are passing electrical current. Otherwise, replace additional resistors.