A4 Quattro Cabriolet V6-3.0L (BGN) (2005)
Idle Speed: Testing and Inspection
Idling Speed, Checking
Special tools and equipment
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VAS5051 with VAS5051/1
Test requirements
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No leaks in exhaust system
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Engine coolant temperature at least 80 degrees C.
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Electrical accessories switched off (coolant fan must not run during the test).
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Air conditioning switched off.
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Pressure gauge not connected.
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Vehicles with automatic transmission: Selector lever in position P or N.
NOTE:
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The idling speed is tested during the basic setting of the engine.
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During basic setting, the solenoid valve for the evaporative emission (EVAP) canister purge regulator valve -N80- is closed and the air
conditioner compressor is switched off.
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To eliminate vibration noises in case of a customer complaint, the idling speed can be adapted.
Test sequence
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Connect testing and information system VAS5051 and select vehicle system "01 - Engine electronics" in selection. Engine must be running at
idling speed.
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Check Diagnostic Trouble Code (DTC) memory. There must not be any DTCs stored. If necessary, correct any DTCs and erase DTC memory.
After erasing DTC memory readiness code must be regenerated.
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Leave engine idling.
CAUTION: The coolant fan should not be running.
Display on VAS5051:
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Under -1- select diagnostic function "04 - Basic setting".