Allroad Quattro V8-4.2L (BAS) (2004)
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Simultaneously press accelerator and brake pedal; engine speed increases to approximately 2200 rpm.
Condition:
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Accelerator and brake pedal pressed simultaneously, engine running at approximately 2200 rpm
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Check specifications in display zones -3- and -4-.
If reading does not match "Syst. OK' specification:
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Touch 4 key twice.
Indicated on VAS 5051:
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From list -1- select diagnostic function "08- Reading measured value block".
Indicated on VAS 5051:
1. Enter display group
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Use keypad -2- to enter "091 " for "Display group number 091 " and confirm by touching Q key.
Indicated on VAS 5051:
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Check display in zones -3- and -4- at idle and in the course of a test drive.
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Perform the same test in display group 092.
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Touch s key or t key to switch display group.
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Actual value in display zone -4- must roughly correspond in each case to specification in display zone -3-
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Terminate function "08- Reading measured value block" by touching < key.
If actual value does not match specification:
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Check camshaft adjustment solenoid valves; Refer to Camshaft adjustment solenoid valves, checking
Note: If value displayed during test drive is far too low, solenoid camshaft adjustment valve is switching oil pressure properly to mechanical
camshaft adjuster, but adjuster is not able to attain its end position (e.g. stiff).
