A8 Quattro Sedan V8-4.2L (AUX) (2001)
Camshaft: Testing and Inspection
Valve -1- For Camshaft Adjust -N205- & -2- For -N208- Check
Valve -1- For Camshaft Adjust -N205- & -2- For -N208- Check
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Switch ignition on.
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Start output Diagnostic Test Mode (DTM) and select camshaft adjustment. Refer to "Scan Tool Testing/Output Diagnostic Test Mode (DTM)
(Function 03)" See: Powertrain Management/Computers and Control Systems/Testing and Inspection
Indicated on display
Output Diagnostic Test Mode ->
Camshaft adjustment 1
When the camshaft adjustment is activated, both solenoid valves should click audibly.
If this result is not obtained, carry out the following tests:
Electrical test of solenoid valves for camshaft adjustment
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Disconnect harness connector from camshaft adjustment solenoid valve which is to be tested.
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Measure resistance between the valve contacts using multimeter (Fluke 83 or equivalent).
Specification: 10 to 18 ohm
If the reading does not match the specification:
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Replace relevant camshaft adjustment solenoid valve.
Checking voltage supply to camshaft adjustment solenoid valves
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Disconnect harness connector from solenoid valve which is to be tested.