Volkswagen Workshop Manuals
Eos (1F7) V6-3.2L (BUB) (2008)
Powertrain Management > Fuel Delivery and Air Induction > Fuel Injector > Component Information > Testing and Inspection > Fuel Injectors, Leak and Injection Quantity, Checking > Page 3225
Fuel Injector: Testing and Inspection
Fuel Injectors N30, N31, N32, and N33, Checking
The following test procedure is used to diagnose Fuel Injectors (N30, N31, N32, N33, N83, N84).
Special tools, testers and auxiliary items required
‹› Diode test lamp (12V).
‹› Wiring diagram.
‹› The Fuel Injectors (N30, N31, N32, N33, N83, N84 ) fuses OK.
‹› The Engine Speed (RPM) Sensor (G28) OK, checking.
‹› 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 (GND) connections between engine/transmission/chassis OK.
‹› Ignition switched off.
Observe Safety Precautions.
Observe rules for cleanliness.
Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] See: Computers and Control Systems/Testing
Disconnect the Fuel Injector electrical harness connectors from Fuel Injectors (N30, N31, N32, N33, N83, N84).
Checking internal resistance
Using a multimeter, check the Fuel Injector electrical terminals 1 to 2 for resistance.
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