A8L Quattro Sedan W12-6.0L (BSB) (2005)
‹› Cylinder bank 2 with cylinders 7 through 12 is located at left in direction of travel.
‹› Mass Air Flow (MAF) sensor 2 (G246) with cylinder bank 2 Intake Air Temperature (IAT) Sensor 2 (G299) is located at right in direction of
travel.
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Connect multimeter to terminal 2 of 5-pin connector and engine Ground (GND) for voltage measurement.
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Start engine and run at idle speed. Specification: at least 11.0 V
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Switch ignition off.
If no voltage is present:
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Check wire between 5-pin connector terminal 2 and Motronic Engine Control Module (ECM) Power Supply Relay (J271) 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 voltage supply and wiring are OK:
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Connect multimeter to terminal 4 of 5-pin connector and engine Ground (GND) for voltage measurement.