Jetta SportWagen L4-2.0L DSL Turbo (CBEA) (2009)
Fuel Injector: Testing and Inspection
Diagnostic Procedures
Fuel Injectors, Checking
Observe all safety precautions: --> [ Safety Precautions ]
View clean working conditions: --> [ Clean Working Conditions ]
Prior to repair work, perform a preliminary check to verify the condition. Refer to --> [ Preliminary Check ] See: Computers and Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures/Preliminary Check.
Use only gold-plated terminals when servicing any component with gold-plated electrical harness connector terminals.
For wiring diagrams, component locations, and connector views, Refer to the applicable wiring diagram.
The following test procedure is used to diagnose all fuel injectors.
Special tools, testers and auxiliary items required
‹› multimeter.
‹› Wiring diagram.
Test requirements
‹› The Engine Speed (RPM) Sensor (G28) OK.
‹› Battery voltage at least 12.5 volts.
‹› All electrical consumers such as, lights and rear window defroster, switched off.
‹› Vehicles with automatic transmission, shift selector lever into position " P" or "N".
‹› A/C switched off.
‹› Ground connections between engine/transmission/chassis OK.
‹› Ignition switched off.
Start diagnosis
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Remove the engine cover.
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Disconnect the Fuel Injector electrical harness connectors from Fuel Injectors (N30, N31, N32, N33).
Checking internal resistance
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Using a multimeter, check the Fuel Injector terminals 1 to 2 for resistance.
Specified value: 178 K to 184 K ohms (at approx. 20° C)
If the specified value was Not obtained:
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Replace the malfunctioning Fuel Injector.
If the specified value was obtained:
If the manufacturers test box is being used, perform the following step.
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Install the test box.
If the manufacturers test box is not being used, perform the following step.