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Hi!
I’ve been strugling figuring out what’s going on with my infiniti g35 crank no start issue.
For a while it was an intermittent issue and when it started, it ran fine, but now no start.
No codes besides NATS malfunction, but immo was removed with UpRev reflash and confirmed removed by the tuner.
Fuel pressure checked - 50psi
Spark checked - ok
Injectors - 12v feed ok, NO impulse. All injectors 12.5 ohm.
Wire continuity checked ok as per Infiniti service manual workflow.
Checked 12 V at control wire and also at PCM with KOEO.
Car starts fine with starter fluid so crank sensor and cam sensor input ok. Also can read rpm data and cam data via obd2.
Can I finally assume that ECU (injector driver) is fried?
Per mr scanner danner, doing resistance checks on high amperage circuits is misleading. you must do voltage drop checks between the starter wire connected to the battery. If I were you I would check put one lead of my DVM on the battery positve and the other end on the main starter stud coming from the battery and get your reading there. You should see maybe 0.1 volts....if you get anything high, like say 5-6v then you have a short in your starter wire between the battery and the starter.
You can also check your ignition wire on your solenoid and the main starter wire, if you get anything above 1v then you have a short in either your ignition wire or your starter wire.
All tests must be done with the circuit loaded! ie cranking.
Thanks for the the advice. Maybe I didn’t mention, but the issue is with injectors. Ground switched injectors but no signal from ECU. I used test light (connected test light to battery positive and backprobed injector signal wire) and no blinking what so ever when cranking. 12v on feed wire confirmed all 6 injectors and no shorts/open connections.
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