TT Coupe L4-1.8L Turbo (AWP) (2005)
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Unplug connector for accelerator position sender.
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Switch ignition on.
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Connect multimeter (voltage measurement range) as follows:
Connector Contact
Specification
1 + Ground
approx. 5 V
1 + 5
approx. 5 V
2 + Ground
approx. 5 V
2 + 3
approx. 5 V
If the specifications are obtained:
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Test the signal wires.
If the specifications are not obtained:
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Test wiring between engine control module and accelerator position sensors.
Testing wiring
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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
1
72
2
73
3
36
4
35
5
33
6
34
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Correct any open/short circuit as necessary.
If no malfunction is detected in wiring:
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Replace accelerator position sensors.