A4 Quattro Wagon L4-1.8L Turbo (ATW) (2000)
If LED does not light up:
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Check wire connection from terminal 1 or 3 of connector for open circuit and short circuit to Ground (GND):
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Repair open circuit or short circuit if necessary.
If LED lights up:
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Checking activation.
Checking activation
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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",under "Powertrain Management/Computers and Control Systems/Testing and Inspection", See:
Powertrain Management/Computers and Control Systems/Testing and Inspection
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Check following wire connections for open circuit and short circuit to Ground (GND) and B+:
Harness connector
VAG1598/31 test box
Terminal
Socket
2
56
4
55
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Repair open circuit or short circuit if necessary.