S6 V8-4.2L (BBD) (2004)
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Connect VAG 1527 diode test lamp between sockets 1 (B+) and 2 of relevant solenoid valve harness connector using test leads VAG 1594
connector test kit.
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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 timing control is activated the diode test lamp should start flashing.
If the diode test lamp lights up continuously:
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Check for short to Ground (GND) in wiring from socket 2 on connector for relevant camshaft adjustment solenoid valve.
If the diode test lamp does not flash:
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Connect VAG 1598/31 test box to wiring harness for engine control module. DO NOT connect to engine control module itself, Refer to "Scan
Tool Testing/Scan Tool Connecting and Initial Checks/Connecting VAG 1598/31 Test Box" See: Powertrain Management/Computers and Control
Systems/Testing and Inspection