Golf L4-2.0L (AZG) (2004)
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If combination valve does not open:
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Replace combination valve.
Engines: AEG, AVH, AZG, BBW and BEV
Requirements
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No malfunctions stored in DTC memory
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Final control diagnosis performed, Adapting functions and components.
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Vacuum lines and hose unions must not leak.
Work sequence
Note:
Do not use compressed air during the following check!
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Remove engine cover.
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Remove pressure hose (arrow) from secondary air pump motor.
Note:
Press buttons on hose couplings together to release coupling.
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Blow lightly into pressure hose to combination valve.
Combination valve must be closed.
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Blow forcibly into pressure hose to combination valve.
Combination valve must open
It combination valve does not open or is continually open:
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Replace combination valve.
