A4 Sedan V6-3.2L (BKH) (2007)
Display on (VAS 5051B):
A Output diagnostic test mode waiting, Advancing by switching required
1
Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80)
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Press the -> button repeatedly, until Leak Detection Pump (LDP) (V144) is activated.
‹› The sound of the leak detection pump running can be heard at the left rear wheel housing.
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End function "005 - output Diagnostic Test Mode (DTM)" by pressing <- button.
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Select diagnostic function "022 - End output" in selection.
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Switch off ignition.
If Leak Detection Pump (LDP) for fuel system is not activated (no operating noise audible):
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Remove Leak Detection Pump (LDP) (V144) and disconnect the electrical connection. Refer to => [ Leak Detection Pump ] See: Service and
Repair.
Checking internal resistance
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Connect Hand-Held Multimeter for resistance measurement as follows.