Jetta GLS Wagon L4-2.0L (AZG) (2002)
Air Injection Pump: Testing and Inspection
With Manufacturer's Scan Tool
Secondary air pump motor, checking
Requirements
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Fuse for secondary air pump in battery main fuse holder must be OK.
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Secondary air pump vacuum lines not blocked or kinked
Work sequence
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Remove engine cover.
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Remove pressure hose in secondary air pump motor.
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Activate secondary air pump relay via final control diagnosis. See: Computers and Control Systems/Engine Control Module/Testing and
Inspection
The secondary pump motor must run at intervals and air must exit at outlet union.
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Motor runs but no air is pumped out:
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Replace secondary air pump motor.
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If secondary air pump motor does not run at intervals:
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Check activation of secondary air pump motor. See: Computers and Control Systems/Engine Control Module/Testing and Inspection