A8L Quattro Sedan W12-6.0L (BSB) (2005)
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Check the wire for short circuit to B+ and Ground (GND). Specification: infinite ohms
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Check wire between 2-pin connector terminal 1 and Ground (GND) for open circuit according to wiring diagram. Wiring resistance: max. 1.5
ohms
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Erase DTC memory of Engine Control Module (ECM) => [ Diagnostic Mode 04 - Erase DTC Memory ] See: Computers and Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Modes 01 - 09, Diagnostic mode 4: Reset/erase diagnostic data.
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Generate readiness code => [ Readiness Code, Generating ] See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive
Cycles and Readiness Codes.
If no malfunction is detected in the wiring:
Cylinder bank 1
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Replace Engine Control Module (ECM) (J623),
Cylinder bank 2
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Replace E ngine Control Module (ECM) 2 (J624),