Beetle L4-2.0L (AEG) (2000)
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Disconnect pressure hose (arrow) from Secondary Air Injection (AIR) pump motor.
NOTE: To disengage, compress the buttons at the hose coupling.
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Blow with light pressure into pressure hose to combination valve. Combination valve must close.
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Blow with high pressure into pressure hose to combination valve. Combination valve must open.
If the combination valve does not open or it is constantly open:
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Replace the combination valve:
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Vehicles with engine code AEG, AVH, AZG, item 20,
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Vehicles with engine code BDC, item 1.
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data.
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Generate readiness code. See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes