Service Port

Note: The air conditioning (A/C) system service valve is located on the delivery line at the firewall or on the pipe at the diagnostic link connector (DLC) on right-hand drive cars. On cars from 800 onwards the service valve is on the pipe at the data link connector (DLC) on all 94 series cars.



- The A/C system components are specially designed for R134a refrigerant. The system components are:
1. Condenser
2. Compressor
3. High-pressure and safety switch
4. Temperature switch
5. Evaporator
6. Low-pressure switch ("Pressostat")
7. Receiver/dryer
8. Filler valve (service port)
9. Quick-release couplings
10. Expansion pipe (orifice)
- Quick-release couplings (9) are used for the evaporator connections and connections to the receiver (dryer) if any. Special tools are required to undo these couplings.
- The plastic rings on quick-release couplings are there to show that they were correctly fitted at the factory.
- The compressor is fitted with a temperature switch (4) which cuts power to the compressor if it overheats,if the temperature rises above approx. 105 °C (221 °F), e.g. if there is a refrigerant leak. Power is restored once the temperature has returned to normal, around 90 °C (194 °F).