Passat V6-2.8L (ATQ) (2004)
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Fuel Pump (FP) must run.
Continuation for all vehicles
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Check fuel injectors for proper seal (visual inspection). With Fuel Pump (FP) running, only 1 to 2 drops per minute should escape from each
valve.
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Disconnect connection between test box sockets.
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Switch ignition off.
If fuel loss is greater:
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Replace malfunctioning fuel injector.
Note the following when installing the fuel injectors:
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Replace O-rings on all fuel injectors and wet them slightly with clean engine oil.
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Insert fuel injectors into fuel rail perpendicular and in the right position, and secure them with retaining clips.
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Position fuel rail with secured fuel injectors on intake manifold and apply uniform pressure to press it in.
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Erase DTC memory of Engine Control Module (ECM). Diagnostic mode 4: Reset/erase diagnostic data. See: Computers and Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures/With Generic Scan Tool/Diagnostic Mode 4: Reset/Erase Diagnostic Data
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Generate readiness code. See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
Checking injection quantity
Insert a fuel injector to be tested into a measuring tube of V.A.G 1602 tester for fuel injection quantity.
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Using respective adapter cables, connect one terminal of fuel injector to be checked to engine Ground (GND).
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Use adapter cable to connect second terminal of fuel injector to V.A.G 1348/3 remote control with V.A.G 1348/3-2 adapter cable.
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Connect alligator clip to B+.
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Switch ignition on.
Vehicles with engine code AHA
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Bridge sockets 1 + 4 of test box with the respective adapter cables.
Fuel Pump (FP) must run.
Vehicles with engine code ATQ
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Bridge sockets 62 + 65 of test box with the respective adapter cables.
Fuel Pump (FP) must run.
Continuation for all vehicles
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Operate V.A.G 1348/3 remote control for 30 seconds.
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Repeat test on other fuel injectors. Use new graduated measuring glasses for this.
