RS 6 V8-4.2L Turbo (BCY) (2003)
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Idle Speed: Testing and Inspection
Idle Speed, Checking
Special tools and workshop equipment required
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VAS 5051 with VAS 5051/1
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 loads switched off (coolant fan must not run during test)
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Air conditioner switched off
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No pressure gauge connected
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Vehicles with automatic transmission: Selector lever set to P or N
NOTE:
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Idle speed is checked during basic setting of engine.
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During basic setting, the EVAP canister purge regulator valve -N80- is closed and the air conditioner compressor switched off.
Work sequence
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Connect vehicle diagnostic, testing and information system VAS 5051 and select vehicle system "01 - Engine electronics" from list. Engine must
be idling. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Scan Tool
Connecting and Initial Checks/Connecting VAS 5051 Scan Tool
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Interrogate fault memory. There must not be any faults stored; if necessary eliminate faults and erase fault memory. After erasing fault memory,
generate readiness code again. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Reading and Clearing
Diagnostic Trouble Codes/Reading Diagnostic Trouble Codes/With Manufacturer's Scan Tool
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Leave engine idling.
CAUTION: Electric radiator coolant fan must not run.
Indicated on VAS 5051:
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From list -1- select diagnostic function "04 - Basic setting".
Indicated on VAS 5051:
