900 L4-1985cc 2.0L DOHC (1986)
47C
Coolant temperature gauge
In the combined instrument, on the instrument panel
57
3-pole connector (1984 models)
In the engine compartment, behind the expansion tank
58
12-pole connector
To the left of the steering column, under the knee shield below the facia
67
6-pole connector (1985 and 1986 models)
In the engine compartment, behind the expansion tank
152A 29-pole white connector (1984 models)
152B 29-pole red connector (1985 and 1986 models)
152C 29-pole black connector
In the electrical distribution box in the engine compartment, on the left-hand wheel housing. The connectors are accessible from the interior of
the car.
159
Distribution terminal +15 (1985 and 1986 models)
In the electrical distribution box in the engine compartment, on the left-hand wheel housing
Operation
The temperature gauge shows the engine coolant temperature. The wiring on 1984 models differs from that of 1985 and 1986 models.
1984 models
When the ignition switch is in the drive position, coolant temperature gauge 47C is supplied (+15) via the 29-pole white connector 152A. The other
terminal of the gauge is earthed via coolant temperature transmitter 45.
Changes in the coolant temperature will affect the resistance of the transmitter, and the gauge will thus show the prevailing engine temperature.
1985 and 1986 models
The operation is the same as on 1984 models, but the supply is taken via fuse 22.
Fault-tracing hints
The temperature gauge will be operative when the ignition switch is in the drive position.
1984 models
1. Check that the supply to the temperature gauge is live.
2. Check that there is no open circuit in transmitter 45.
3. Check the connectors, cable harnesses and earth connections.
1985 and 1986 models
1. Check fuse 22 and check that the supply to it is live.
2. Check that the supply to the temperature gauge is live.
3. Check that there is no open circuit in transmitter 45.
4. Check the connectors, cable harnesses and earth connections.
