TT Coupe L4-1.8L Turbo (AWP) (2005)
Air Injection Control Valve: Testing and Inspection
Combination Valve, Checking
Combination Valve, Checking
Recommended Special Tools, Workshop Equipment, Testers, Measuring Instruments and Auxiliary Items
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V.A.G 1390 hand vacuum pump
Test Conditions
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Vacuum lines and hose connections free of leaks.
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Vacuum hoses not clogged or kinked
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Pressure hose for Secondary Air Injection (AIR) Pump Motor not clogged or kinked
Test Sequence
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Disconnect vacuum hose from combi-valve.
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Connect hand vacuum pump (V.A.G 1390 or VAS 6213 ) to vacuum hose -1- on combi-valve.
NOTE: Do not use compressed air during following check.
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Disconnect pressure hose at at Secondary Air Injection (AIR) pump motor -arrow- and blow air in with light pressure. Combi-valve must be
closed.
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Operate the hand vacuum pump.
Combi-valve must open.
If the combination valve does not open or it is constantly open:
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Replace combi-valve.
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Erase DTC memory of ECM. See: Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Mode
04 - Erase DTC Memory
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Generate readiness code. See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness
Codes/Generate Readiness Code