TTS Quattro Roadster L4-2.0L Turbo (CDMA) (2009)
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Using a multimeter, check the Leak Detection Pump (LDP) (-V144-)electrical harness connector terminal 3 to the Motronic Engine Control
Module (ECM) Power Supply Relay (J271 ) terminal 2/87 for an open circuit.
Specified value: Wire resistance max 1.5 ohms.
If the specification is not obtained:
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Check the wiring for a short circuit to Battery positive (+) or an open circuit.
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Check the electrical harness connector for damage, corrosion, loose or broken terminals.
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If necessary, repair the faulty wiring connection.
If no malfunction is detected in the wiring and if the voltage supply was OK:
Checking wiring
If the manufacturers test box is being used, perform the following step.
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Install the test box.
If the manufacturers test box is not being used, perform the following step.
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Remove the Motronic Engine Control Module (ECM) ( J623).
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Using a multimeter, check the Leak Detection Pump (LDP) (-V144-) electrical connector terminals to Motronic Engine Control Module (ECM)
(J623) electrical connector T94 terminals.