A8L Quattro Sedan W12-6.0L (BSB) (2005)
If specification is not obtained:
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Replace corresponding Secondary Air Injection (AIR) Solenoid Valve:
‹› Secondary Air Injection (AIR) Solenoid Valve (N112),
‹› Secondary Air Injection (AIR) Solenoid Valve 2 (N320),
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Erase DTC memory of Engine Control Module => [ 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 specification is obtained:
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Check wires to control module according to wiring diagram.
Check wires to control module
Cylinder bank 1
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Connect test box to Engine Control Module (ECM) (J623) wiring harness on connecting test box for wiring test, refer to Repair Manual,
Cylinder bank 2
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Connect test box to E ngine Control Module (ECM) 2 (J624) wiring harness on connecting test box for wiring test, refer to Repair Manual,
Cylinder bank 1 and 2
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Check wire between test box socket 44 + terminal 2 of 2-pin connector for open circuit according to wiring diagram. Wiring resistance: max. 1.5
ohms