A3 Quattro V6-3.2L (BUB) (2008)
Start diagnosis
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Disconnect the Direct Shift Gearbox (DSG) Mechatronic (J743) electrical harness connector.
‹› The Motronic Engine Control Module (ECM) (J220) must remain connected for the following step.
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Using a Multimeter, check the Direct Shift Gearbox (DSG) Mechatronic (J743) electrical harness connector terminals 10 to 15 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, lose 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 Motronic Engine Control Module (ECM) (J220).
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 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) ( J220).
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Using a Multimeter, check the Direct Shift Gearbox (DSG) Mechatronic (J743) electrical harness connector to the Motronic Engine Control
Module (ECM) ( J220) electrical harness connector T121 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, lose 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 Direct Shift Gearbox (DSG) Mechatronic (J743).
Final procedures
After repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory. Refer to => [ Diagnostic Mode 03 - Read DTC Memory ] See: Testing and Inspection/Scan Tool Testing and
Procedures/Diagnostic Modes 01 - 09.
2. If necessary, erase the Direct Shift Gearbox (DSG) Mechatronic (J743) memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] See: