R8 Quattro Coupe V10-5.2L (BUJ) (2010)
Expansion Valve: Testing and Inspection
A/C Compressor Regulator Valve, Checking Switch-On Signal
Special tools, testers and auxiliary items required
‹› Connector Test Set (V.A.G 1594C)
‹› DSO Measuring Leads 1 & 2 (VAS 5051/8)
‹› Vehicle Diagnosis, Testing And Information System (VAS 5051/)
Preparation
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Switch off ignition.
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Remove the front noise insulation - 1 -.
Test Sequence
‹› The A/C Compressor Regulator Valve (N280) activation and the current measured by the Climatronic Control Module (J255), which flows via the
A/C compressor regulator valve, is displayed in the Climatronic control module measured values. Check using vehicle diagnosis, testing and
information system VAS 5051 / under "Guided Fault Finding".
‹› An adapter cable can also be used for this test. To do this, e.g. use one connector each - A - and - B - (part number 1J0 973 702 and 1J0 973 802
and related terminal contacts), two standard sockets for banana connectors - C - and two wires with 0.5 mm 2 diameter.