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Old 06-19-2018, 08:28 PM   #1
spenser4
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Default Fuel injector harness

I have a 2003 Vue 3.0 engine. I have a P0301 code. The Service manual want me to do a coil value test and a pulse test. Can't get to the injectors the way they connect under the intake. I know from experience when you completely remove the intake. Under the 2 intake runner controllers there are 2 electrical connectors you unplug. Can somebody tell me if one or both of them are for the injectors. I can go to u pull it bone yard and cut the main cable side connector. I have the wiring for the injectors code. I can cut enough wire back and connect them to the intake side. Then I can easily measure the injector values. I can also connect my injector pulse tool so I can pulse and measure the fuel drop if need. Thanks!

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Old 06-19-2018, 10:25 PM   #2
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2003 L-Series 3.0L Sedan
Default Re: Fuel injector harness

Each coil pack consists of three ignition coils, fired by the ecm. Each coil pack has it's own connector to the main wiring harness going to the ecm. If you can, disconnecting the coil pack for cylinders 135 and connecting a spare coil pack will allow you to test the spare but you'll have to either run some wires from each output to near ground for a spark test or connect three spark plugs to the spare coil pack and ground all three plug bases. Someone turns the ignition switch to START while you observe for spark on all three plugs. If spark plugs haven't been replaced every 100k miles, they may be worn. If this engine is well over 150k miles, other issues may have occurred - valve wear, piston ring wear, blown head gasket, burned exhaust valve.......

Injectors have their own connectors, six connectors for six injectors.

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