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Home >> Audi >> 2012 >> Q5 2.0T >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> A/C Compressor >> Heating, Ventilation & Air Conditioning (1 Of 2) (As Of 06.2014) >> 87 Air Conditioning >> Refrigerant Circuit >> A/C Compressor Regulator Valve -N280-, CHECKING ACTIVATION

A/C Compressor Regulator Valve -N280-, CHECKING ACTIVATION

NOTE:

Perform an electrical test for the activation of the A/C Compressor Regulator Valve -N280- as it is described in the A/C system Guided Fault Finding using the Vehicle Diagnostic Tester in the "Guided Fault Finding  " function.

The activation of the A/C Compressor Regulator Valve -N280- occurs via the Vehicle Electrical System Control Module -J519-. Refer to the appropriate SYSTEM WIRING DIAGRAM. The request to activate the A/C Compressor Regulator Valve -N280- and the necessary current to regulate the compressor output to reach the desired temperature at the evaporator. Sent via the Data Bus from the Climatronic Control Module -J255- A/C display and control head to the Vehicle Electrical System Control Module -J519-. The Vehicle Electrical System Control Module -J519- then controls the A/C Compressor Regulator Valve -N280-.

If a fault in the A/C Compressor Regulator Valve -N280- is detected, then it will be stored in the DTC memory for the Vehicle Electrical System Control Module -J519- and the Climatronic Control Module -J255- A/C display and control head. It will be necessary to the check the Vehicle Electrical System Control Module -J519- DTC memory when reading the DTC memory for the Climatronic Control Module -J255- A/C display and control head using the Vehicle Diagnostic Tester in the "Guided Fault Finding  " function.

The activation of the A/C Compressor Regulator Valve -N280- is displayed in the Vehicle Electrical System Control Module -J519- measured values block using the Vehicle Diagnostic Tester in the "Guided Fault Finding  " function.

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