A4 V6-3.0L (AVK) (2004)
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Remove bolts or quick-release screws -1- and -2- and remove front noise insulation.
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Disconnect pressure hose (arrow) at Secondary Air Injection (AIR) pump motor and blow air in with light pressure (do not use pressurized air).
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Both combination valves must be closed, it must not be possible to blow through hose
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Operate hand vacuum pump.
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The relevant combination valve must open, it must be possible to blow through
If the relevant combination valve does not open:
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Replace combination valve.
Final procedures
After repair work, the following work steps must be performed in the mentioned sequence:
1
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Check DTC memory, "Mode 3: Check DTC memory". See: Computers and Control Systems/Testing and Inspection/Scan Tool Testing and
Procedures/Scan Tool Testing/With Generic Scan Tool/Diagnostic Mode 3: Check DTC Memory
2
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If necessary, erase DTC memory, "Mode 4: Reset/erase diagnostic data". See: Computers and Control Systems/Testing and Inspection/Scan
Tool Testing and Procedures/Scan Tool Testing/With Generic Scan Tool/Diagnostic Mode 4: Check Reset/Erase Diagnostic Data
3
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Generate readiness code. See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness
Codes/Audi Drive Cycle/Readiness Code/With Generic Scan Tool/Readiness Code, Generating
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End diagnosis and switch ignition off.