Workshop Manuals Factory service & repair Alfa Romeo
01 General information02 Specifications03 Manufacturing data and tolerances04 Tightening torques05 Fluids and lubricants06 Maintenance07 Diagnostic checks08 Engine09 Clutch10 Gearbox and differential11 Transmission (4x4)12 Axles and driveshafts13 Brakes14 Steering15 Suspension and wheels16 Heating, air conditioning and auxiliary units17 Electrical equipment18 Body fittings19 Body panels and frame20 Wiring diagrams and electrical functions21 Wiring harnesses22 Connectors and pin-outs23 Fault diagnosis24 Special tools
Alfa Romeo 159 Factory Service Manual (2005-2011)20 · Wiring diagrams and electrical functions
20 · Electrical

Compressor engagement - description

Make
Alfa Romeo
Model
159 Factory Service Manual
Year
2005–2011
Section
Climate control system › Compressor engagement - description
Wiring diagrams and electrical functionsCompressor engagement - description

COMPRESSOR ENGAGEMENT - DESCRIPTION

DESCRIPTION

The special button (ice symbol) on the climate control system control unit switches on the air cooling and dehumidification circuit, activating the air conditioning compressor.

The above button enables operation of the air cooling circuit, but actual compressor activation is also dependent upon activation of:

- the linear sensor, located on the coolant circuit that locks air conditioner activation if coolant pressure is too low or high;

- the engine control unit that excludes compressor operation in accordance with engine management mode; e.g. in the case of high engine temperatures or high engine load (sudden acceleration);

If the compressor is enabled and the engine started, the manual ventilation does not go below a minimum value

See E6020 AIR CONDITIONING

For more details

See descriptions 5040 AIR CONDITIONING CASING AND COMPONENTS

Parts & tools for this job Staging For 2005 Alfa Romeo 159

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