Q7 Quattro V6-3.6L (BHK) (2007)
‹› 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 34 to 46 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 Engine Control Module (ECM) (J623). Refer to => [ Engine Control Module, Replacing ] See: Relays and Modules - Powertrain
Management/Relays and Modules - Computers and Control Systems/Engine Control Module/Service and Repair/Engine Control Module,
Replacing.
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 Engine Control Module (ECM) (J623). Refer to => [ Engine Control Module, Replacing ] See: Relays and Modules - Powertrain
Management/Relays and Modules - Computers and Control Systems/Engine Control Module/Service and Repair/Engine Control Module,
Replacing.
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Using a Multimeter, check the Transmission Control Module (TCM) (J217) electrical harness connector to the Engine Control Module (ECM)
(J623) electrical harness connector T94 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).