Passat Wagon L4-1781cc 1.8L Turbo (AEB) (1998)
Fuel Injector: Testing and Inspection
Fuel injectors, checking
Special tools, testers, measuring instruments and auxiliary items required
WARNING!
Fire Hazard! Do NOT have anything in area that can ignite fuel!
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VAG 1551/1552 Scan Tool with VAG 1551/3B adaptor cable
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VAG 1598/22 Test Box
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Fluke 83 Multimeter
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VAG 15276 Voltage tester
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VW 1594 Adaptor kit
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VAG 1348/3A Remote control with VAG 1348/3-2 adaptor cable
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Wiring diagram
Checking conditions
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Engine speed sensor OK, checking, Refer to "Engine Speed Sensor" under "Computers and Control Systems", See: Computers and Control
Systems/Engine Speed Sensor/Testing and Inspection
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Fuel pump relay OK
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Fuse 34 OK.
WARNING!
Fuel system is under pressure! Before opening the system place a cloth around the connection. Then release pressure by carefully loosening the
connection.
Activation,checking
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First check activation of Fuel injectors via Output Diagnostic Test Mode (DTM), See: Computers and Control Systems/Testing and
Inspection/Scan Tool Testing and Procedures/Output Diagnostic Test Mode (DTM) (Function 03)
If one or more injectors do not click, continue checking activation as follows
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Disconnect 5-pin harness connector -1- from Ignition coil Power Output stage -2-.