Jetta Sedan L5-2.5L (CBTA) (2009)
panel B.
Specified value: Wire resistance max 1.5 ohms.
If the specification is not obtained:
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Check the wiring for high resistance 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 or 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). Refer to --> [ Motronic Engine Control Module, Replacing ] .
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Using a multimeter, check the Leak Detection Pump (LDP) (-V144-) electrical connector terminal 1 to Motronic Engine Control Module (ECM)
(J623) electrical connector T94 terminal 44 for an open circuit or high resistance.
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Using a multimeter, check the Leak Detection Pump (LDP) (-V144-) electrical connector terminal 2 to Motronic Engine Control Module (ECM)
(J623) electrical connector T94 terminal 49 for an open circuit or high resistance.
Specified value: 1.5 ohms max.
If the specification is not obtained:
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Check the wiring for a short circuit to Battery positive (+), high resistance 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 found in wiring:
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Replace the Motronic Engine Control Module (ECM) (J623). Refer to --> [ Motronic Engine Control Module, Replacing ] .
Assembly is performed in the reverse order of the removal, note the following:
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Install the right rear wheel housing liner.