Jetta L4-2.0L (BEV) (2004)
Injection quantity and proper seal of fuel injectors, checking
Recommended special tools and equipment
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V.A.G 1348/3A remote control with V.A.G 1348/3-2 adapter cable
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V.A.G 1602 tester for quantity of injected fuel
Without illustration:
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Without illustration:
Requirement
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Fuel pressure must be OK, check fuel pressure regulator and retaining pressure.
Work sequence
WARNING: Fuel system is under pressure. Before opening system, place rags around the connection point. Then release pressure by carefully
loosening connection.
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Remove upper part of intake manifold.
Intake manifold, upper part, disassembling and assembling.
NOTE: Seal the intake channels in lower section of intake manifold using a clean rag.
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Disconnect fuel injector connectors.
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Remove and support fuel rail with fuel injectors:
Intake manifold, lower part, disassembling and assembling:
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Connect test box to control module wiring harness, connect test box for wiring test. See: Computers and Control Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/Test Box, Connecting For Wiring Test
Vehicles with engine code AEG
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Bridge sockets 2 + 4 of test box with the respective adapter cables. Fuel Pump (FP) must run.