System Diagram

Cooling System Fan Diagrams:

Cooling System Fan Components:

Locations of components

7 Earthing point
On the left-hand wheel housing

20 Ignition switch
On the right-hand side of the steering Column

21 Ignition switch relay
In the electrical distribution box behind the glove compartment

22A Fuse board
Behind the access panel in the glove compartment

26 Time delay relay for the radiator fan
In the electrical distribution box behind the glove compartment

37 Radiator fan for the engine
At the front of the car on the left-hand side

39 Temperature switch
On the left-hand side of the radiator

59 Two-pole connector
At the front of the car on the left-hand side

113 Relay/time-delay relay for the rear window heater
In the electrical distribution box behind the glove compartment

155 Relay, AC/ACC
In the electrical distribution box behind the glove compartment

156 Time-delay relay, AC/ACC
In the electrical distribution box, behind the glove compartment

158 Negative distribution terminal
In the electrical distribution box behind the glove compartment

159 Distribution terminal +15
In the electrical distribution box behind the glove compartment

230 Distribution terminal +30
In the electrical distribution box behind the glove compartment

Operation
The supply is taken from fuse 23 to temperature switch 39, regardless of the position of the ignition switch.

When the engine coolant temperature has reached 92°C, the temperature switch will close and radiator fan 37 will start.

Time delay relay (US, CA, JP, ME, FE, AU)
Cars for the markets mentioned above are equipped with a time delay relay that limits the running time of the radiator fan after the engine is stopped.

Relay 26 is always energized when the engine is running, i.e. when the ignition switch is in the drive position. The fan is controlled by switch 39.

If the engine is stopped, the + 15 supply to the relay coil will be disconnected. After about 10 minutes, the relay will disconnect the fan motor supply even if temperature switch 39 is closed.

Fault-tracing hints

1. Check fuse 23 and check that the supply to it is live.
2. Check that the supply to the temperature switch 39 is live.
3. Check the operation of the radiator fan by shunting the supply circuit across the temperature switch. If a time delay relay is included, check this relay for proper function.
4. Warm up the engine to operating temperature and check the temperature switch.
5. Check the connectors, the wiring and the earth connections.