900 L4-1985cc 2.0L SOHC Turbo VIN S FI (1984)
Auxiliary Blower Motor: Testing and Inspection
FAULT-TRACING HINTS
As a general rule, supply to the unit is live when the ignition switch is in the drive position. If none of the components are faulty, check the cable
harnesses, connectors and earth connections.
Compressor And Radiator Fan Motor 37
1. Check fuses 6 and 25 and check that the supply to AC switch 169 and relay 156 is live.
2. Press the AC switch. Measure the voltage across pressure switch 166 (the pressure switch should be closed). Note that refrigerant will spray out
when the pressure switch is disconnected. Caution: Risk of frostbite.
3. Check cycling clutch contact 171. (It should close at +6 °C.)
4. Check relay 156 and check that switches 167 and 168 in the earth circuit of the relay are closed when the engine is idling and at normal engine
temperature, respectively.
5. Check that the supplies to the compressor and the radiator fan are live.
AC Radiator Fan 172
1. Check fuse 6 and check that the supply to the AC switch and to relay 155 is live.
2. Press the AC switch. Measure the voltage across pressure switch 166 (the pressure switch should be closed). Note that refrigerant will spray out
when the pressure switch is disconnected. Caution: Risk of frostbite.
3. Check that relay 155 is being energised and that the supply to the AC radiator fan is live.
