Jetta Sedan L5-2.5L (BGP) (2005)
‹› The Motronic Engine Control Module (ECM) (J220) fuses OK.
‹› Battery voltage at least 12.5 V.
‹› Ignition switched off.
Test procedure
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Perform a preliminary check to verify the customers complaint. Refer to --> [ Engine Control Module, Replacing ] See: Engine Control
Module/Service and Repair/Removal and Replacement/Engine Control Module, Replacing.
Procedure
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Disconnect the Data Bus On Board Diagnostic Interface (J533) electrical harness connector.
‹› The Transmission Control Module (TCM) (J217) must remain connected for the following step.
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Using a Multimeter, check the Data Bus On Board Diagnostic Interface (J533) electrical harness connector terminals 6 to 16 for resistance.
Specified value: 60 to 72 ohms (at approx. 20° C)
If the specified value was not obtained:
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Check the wiring connection for an open circuit, short circuit to Battery (+) or Ground (GND).
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Check the wiring connection for damage, corrosion, loose or broken terminals.
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If necessary, repair the faulty wiring connection.
If no malfunction is found in the wiring:
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Replace the Transmission Control Module (TCM) (J217). Refer to --> [ Transmission Control Module, Replacing ] See: Transmission Control
Systems/Relays and Modules - Transmission and Drivetrain/Relays and Modules - A/T/Control Module/Service and Repair.
If the specified value was obtained:
Checking wiring
If the manufacturers test box is being used. Perform the following step.
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Install the Adapter F/VAG1598 (VAG1598/22).
If the manufacturers test box is not being used. Perform the following step.
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Remove the Transmission Control Module (TCM) (J217). Refer to --> [ Engine Control Module, Replacing ] See: Engine Control Module/Service
and Repair/Removal and Replacement/Engine Control Module, Replacing.
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Using a Multimeter, check the Data Bus On Board Diagnostic Interface (J533) electrical harness connector to the Transmission Control Module
(TCM) (J217) electrical harness connector T52 for resistance.
Specified value: 1.5 ohms Max.
If the specified value was not obtained:
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Check the wiring connection for an open circuit, short circuit to Battery (+) or Ground (GND).
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Check the wiring connection for damage, corrosion, loose or broken terminals.
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If necessary, repair the faulty wiring connection.