Q7 Quattro V6-3.6L (BHK) (2007)
If the electrical harness connector is OK:
Checking voltage
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Switch the ignition on.
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Using a Multimeter, check the Power Supply Relay (terminal 15) (J329) socket 2/87 to Ground (GND).
Specified value: battery voltage.
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Switch the ignition off.
If the specified value was not obtained:
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Check the wiring from the Power Supply Relay (terminal 15) (J329) socket 2/87 to the Transmission Control Module (TCM) (J217) electrical
harness connector terminals 27 and 28 for an open circuit or a short circuit.
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If necessary, repair the faulty wiring connection.
If the specified value was obtained:
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Using a Multimeter, check the Transmission Control Module (TCM) (J217) electrical harness connector terminal 3 to Ground (GND).
Specified value: battery voltage.
If the specified value was obtained:
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Check the wiring from the Battery to the Transmission Control Module (TCM) (J217) electrical harness connector terminal 3 for an open circuit or
a short circuit.
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If necessary, repair the faulty wiring connection.
If the specified value was obtained:
Checking Ground (GND)
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Using a Multimeter, check the Transmission Control Module (TCM) (J217) electrical harness connector terminals 1 and 2 to Ground (GND) for
resistance.
Specified value: 1.5 ohms
If the specification was not obtained:
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Check the wiring for a an open circuit.
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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: Service and Repair.
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: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Modes 01 - 09/Diagnostic Mode 03 - Read DTC Memory
2. If necessary, 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 01 - 09/Diagnostic Mode 04 - Erase DTC Memory
3. If the DTC memory was erased, generate readiness code. Refer to => [ Readiness Code ] See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes.