A4 Quattro Wagon V6-2.8L (AHA) (1998)
Variable Valve Timing Solenoid: Testing and Inspection
Valves For Camshaft Adjustment, Checking
Valves For Camshaft Adjustment, Checking
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Connect VAG1551/1552 Scan Tool (ST) and press buttons -0-and -1- to insert "Engine Electronics" address word 01 (with engine running at idle).
Refer to "Scan Tool Testing/Scan Tool Connecting and Initial Checks/Connecting VAG 1551/1552 Scan Tool" See: Testing and Inspection
Indicated on display
Rapid data transfer
HELP
Select function XX
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Press buttons -0- and -3- to select "Output Diagnostic Test Mode" function 03.
Indicated on display
Rapid data transfer
Q
03 - Output Diagnostic Test Mode
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Press -Q- button to confirm input.
Indicated on display
Output Diagnostic Test Mode
->
Camshaft adjustment 1
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Check using output DTM and activate camshaft adjustment. Refer to "Scan Tool Testing/Output Diagnostic Test Mode (DTM) (Function 03)"
See: Testing and Inspection
Valves 1 and 2 for camshaft adjustment, -N205- and -N208-, must click audibly.
If the valves do not click:
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Check as described in test procedures that follow.
Checking solenoid valves for camshaft adjustment electrically
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Disconnect harness connector from valve.
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Using multimeter with auxiliary wires from VAG1594, measure resistance across terminals on valve.
Specified value: 10-18 ohms
If resistance is not as specified:
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Replace solenoid valve.
Checking voltage supply of valves for camshaft adjustment
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Disconnect harness connector from valve.