A4 Quattro Cabriolet L4-2.0L Turbo (BWT) (2009)
‹› The Engine Control Module (ECM) (J623) must remain connected for the following step.
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Using a Multimeter, check the Transmission Control Module (TCM) (J217) electrical harness connector terminals 2 to 6 for resistance.
Specified value: 60 to 72 ohms (at approx. 20° C)
If the specified value was not obtained:
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Using a Multimeter, check the following wiring connections for resistance.
Specified value: 1.5 ohms Max.
If the specified values were not obtained:
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Check the wiring connections for an open circuit, short circuit to Battery (+) or Ground (GND).
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Check the wiring connections 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 and the resistance value was not OK:
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Replace the Engine Control Module (ECM) (J623 ). Refer to => [ Engine Control Module, Replacing ] See: Powertrain Management/Computers
and Control Systems/Engine Control Module/Service and Repair.
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Erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Modes/Diagnostic Mode 04 - Erase DTC Memory.
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Perform a road test to verify repair.
If the DTC does not return:
Repair complete, Generate readiness code. Refer to => [ Readiness Code ] See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Monitors, Trips, Drive Cycles and Readiness Codes.
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End of diagnosis.
If the DTC returns and no malfunction is found in the wiring and the resistance value was OK:
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Replace the Transmission Control Module (TCM) ( J217). Refer to => [ Transmission Control Module, Replacing ] See: Service and Repair.
Final procedures