TT Coupe L4-1.8L Turbo (AWP) (2005)
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If the LED lamp does not flash or lights up continuously:
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Connect test box VAG 1598/31 to wiring harness for engine control module. Do not connect to the engine control module itself.
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Test for open circuit and short to positive or Ground in the following wiring connections:
Connector Contact
Test box VAG 1598/31 Socket
2
64
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Correct short circuit or open circuit if necessary.
If the wiring is OK:
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Install a new engine control module
