Jetta V6-2.8L (BDF) (2002)
Air Injection Control Valve: Testing and Inspection
Secondary Air Injection (AIR) Valve, Checking
With Manufacturer's Scan Tool
Combi-valve, checking
Special tools and equipment
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VAG 1390 Hand vacuum pump
Test conditions
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Vacuum lines and hose connections free of leaks.
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Pressure hose for secondary air injection pump motor not blocked or kinked.
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Vacuum lines not blocked or kinked.
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No DTC stored in DTC memory
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Perform output Diagnostic Test Mode (DTM)
Refer to Powertrain Management
Test sequence
Note: Do not use compressed air during the following check!
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Remove engine cover.
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Remove intake hose between Mass Air Flow (MAP) sensor and throttle valve control module
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Pull vacuum hose off secondary air injection (AIR) solenoid valve -N112- and combi-valve -arrow-.