Safety As A Function Of The Outside Temperature; Safety As A Function Of Electric Diagnosis - CITROEN C4 2004 Handbook

CHECKING THE EFFICIENCY OF THE AIR CONDITIONING SYSTEM
Management of the air conditioning compressor

Safety as a function of the outside temperature.

The aircon compressor is cut if the outside temperature is lower than 3.5 °C.
The aircon compressor is triggered when the outside temperature goes above 5°C.

Safety as a function of electric diagnosis.

The cutting of the aircon compressor is effective in the following conditions:
- Fault in the aircon compressor clutch.
- Fault in the aircon compressor electrovanne.
- Fault in the aircon fluid pressure sensor.
- Fault in the blower (delay of 30 seconds).
- Fault in communication between the engine ECU and the BSI1.
- Fault in communication between the engine relay unit (BSM) and the BSI1.
NOTE: see procedure «Principle of operation: air conditioning».
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