R8 Quattro Coupe V10-5.2L (BUJ) (2010)
If the manufacturers test box is being used, perform the following step.
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Install the test box. Refer to appropriate repair information.
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 appropriate repair information
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Using a multimeter, check the Exhaust Flap Valve 1 (N321) electrical harness connector terminal 2 to the Engine Control Module (ECM) (J623)
electrical harness connector T94 terminal 28 for an open circuit.
Specified value: 1.5 ohms Max.
If the specification was not obtained:
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Check the wiring for a short circuit to each other, Battery (+), and Ground (GND), or an open circuit.
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If necessary, repair the faulty wiring connection.
If no malfunction is detected in the wiring:
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Replace the Engine Control Module (ECM) (J623). Refer to appropriate repair information.
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Assembly is performed in the reverse order of removal.
Final procedures
After the 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 - 0A.
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 - 0A.
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.