A4 Cabriolet L4-1.8L Turbo (AMB) (2005)
Idle Speed: Testing and Inspection
With Manufacturer's Scan Tool
Idle Speed (RPM), Checking
Special tools and workshop equipment required
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VAS 5051 Vehicle diagnostic, testing and information system
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VAS 5051/1 adapter
Requirements
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No leaks in exhaust system
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Coolant temperature at least 80 degrees C.
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Electrical devices 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 idle speed (RPM) cannot be adjusted.
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The idle speed (RPM) is tested during the basic setting of the engine.
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During basic setting, the Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80- is closed and the air conditioning compressor is
switched off.
Work sequence
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Connect vehicle diagnostic, testing and information system VAS 5051 and select vehicle system "01 - Engine electronics" in selection. Engine
must be running at idle. See: Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/With
Manufacturer's Scan Tool/Scan Tool Connecting
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Check DTC memory. There must not be any DTCs stored. If necessary, repair any DTCs and erase DTC memory. After erasing DTC memory,
generate readiness code.
See: Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/With Manufacturer's Scan
Tool/Diagnostic Trouble Code (DTC) Memory, Checking
See: Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/With Manufacturer's Scan
Tool/Diagnostic Trouble Code (DTC) Memory, Erasing
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Leave engine idling.
CAUTION: The electric coolant fan should not be running.