A4 Quattro Sedan V6-3.0L (AVK) (2002)
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Check the following wire connection for open circuit and short circuit to Ground (GND) or to plus (B+):
Electrical connector terminal
Test box VAG1598/22 socket
2
16
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Repair wiring or short circuit as necessary.
If you did not find any malfunction, however the Leak Detection Pump (LDP) did not function during the output Diagnostic Test Mode (DTM):
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Replace Leak Detection Pump (LDP) -V144.
If the LED does not blink, although wiring is OK:
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Replace Engine Control Module (ECM):
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Generate readiness code:
Checking input wiring (vehicles with mechanical throttle activator)
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Switch ignition off.
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Connect test box VAG1598/22 to harness connector, "Checking output wiring."