Jetta L5-2.5L (CBTA) (2008)
Leak Detection Pump: Testing and Inspection
Fuel Injection and Ignition - Fuel Supply
EVAP Leak Detection Pump Vacuum Supply, Checking (BGP,BGQ,CBTA,CBUA)
Special tools, testers and auxiliary items required
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Turbocharger tester V. A. G 1397A
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T-piece 251 201 346
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Hose dia. 6 mm
NOTE: Leak Detection Pump (LDP) V144 component location: Under wheel housing liner in right rear wheel housing.
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Remove right rear wheel and wheel housing liner.
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Remove vacuum line - 1 - from Leak Detection Pump (LDP) V144.
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Connect Turbocharger Tester V.A.G 1397A with T-piece and 6 mm dia. hose between vacuum line - 1 - and Leak Detection Pump (LDP) V144 -
2 -.
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Switch on measuring range 1 (absolute pressure measurement).
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Connect vehicle tester and start engine.
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Select Guided Functions operating mode on vehicle diagnostic tester.
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Select "Check tank ventilation system for leaks" Guided Function. Activate test.
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While test is running, observe display on Turbocharger Tester V.A.G 1397A.
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The pressure must pulsate and must not rise above 0.700 bar (absolute pressure) during the test.
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If pressure rises above 0.700 bar during the test, the vacuum supply is too low. Check vacuum line to intake manifold for kinks or blockages.
