R8 Quattro Coupe V10-5.2L (BUJ) (2010)
If the specification was obtained:
Checking Ground (GND) activation
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 appropriate repair information.
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Using a multimeter, check the Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) (G131) electrical harness connector to the
Engine Control Module (ECM) 2 (J624) electrical harness connector T94a for resistance.
Specified value: 1.5 ohms.
If the specification was not obtained:
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Check the wiring for an open circuit, a short circuit to Battery positive (+) or Ground (GND).
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Check the electrical harness connector for damage, corrosion, loose or broken terminals.
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If necessary, repair the wiring connection.
If the specification was obtained:
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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 01 - 0A.
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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 diagnosis.
If the DTC returns and no malfunction is found in the wiring and voltage supply was OK: