A/C Signal: Description and Operation

AIR CONDITIONING PRESSURE TRANSDUCER-PCM INPUT
The Powertrain Control Module (PCM) monitors the A/C compressor discharge (high side) pressure through the air conditioning pressure transducer. The transducer supplies an input to the PCM. The PCM engages the A/C compressor clutch if pressure is sufficient for A/C system operation.

Fig. 11 Relay Location:

AIR CONDITIONING CLUTCH RELAY-PCM OUTPUT
Viper vehicles are available with air conditioning. The PCM operates the air conditioning clutch through the A/C out circuit. The air condition compressor clutch relay is located below the heater blower motor housing (Fig. 11). For information regarding when the air conditioning clutch energizes, refer to Air Conditioning Request - PCM Input. When the coolant temperature reaches 113°C (235°F), the power to the NC compressor clutch is turned off.