A4 Quattro Wagon L4-1.8L Turbo (ATW) (2000)
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Connect multimeter for voltage measurement as follows:
Harness connector
Specified value
Terminal
1 + Ground (GND)
about 5 V
1+5
about 5 V
2 + Ground (GND)
about 5 V
2+3
about 5 V
If specified values are obtained:
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Also check signal wires.
If specified values are not obtained:
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Check wire connections from Engine Control Module (ECM) to sensors for accelerator pedal position.
Checking wire connections
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Connect VAG1598/31 test box at wiring harness to Engine Control Module (ECM), do not connect ECM. Refer to "Scan Tool Testing/Wiring and
Component Testing Using VAG1598/31 Test Box", See: Computers and Control Systems/Testing and Inspection
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Check following wire connection for open circuit and short circuit to Ground (GND) and B+:
Harness connector
VAG1598/31 test box
Terminal
Socket
1
72
2
73
3
36
4
35
5
33
6
34
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Repair open circuit or short circuit if necessary.