Jetta GLS L4-1.8L Turbo (AWP) (2002)
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Air Injection Control Valve: Testing and Inspection
Secondary Air Intake Valve Checking
Secondary air intake valve, checking
Check conditions
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Coolant temperature 5 to 33°C
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Secondary air pump motor OK.
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No DTCs must be stored in DTC memory.
Test sequence
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Pull vacuum hose off combi-valve-arrow-.
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Start engine and run at idling speed. When secondary air pump motor starts, the vacuum must be felt on vacuum hose.
If no intake manifold vacuum is perceptible:
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Switch off engine.
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Check activation of valve.
