Infiniti Repair Questions? Ask a Mechanic for Answers ASAP
I am sorry you have had to wait so long, I hadn't seen your post before this.
Do you happen to know if you have any codes stored?Is the check engine light coming on when you turn the key on?
Do you have a test light?
First thing to do is see if there is power out at the coils. Check and see if there is power with the key on.
Also, is the car a coupe or sedan?
Its the computers job to ground the coils to send signal and make them fire. Since the check engine light is flashing I suspect you have an issue with the ecm relay in the IPDM. The large fuse and relay box under the hood. Try swapping the fog light relay with the ecm relay and see if the car will start.
I have to check and see if I have a diagram for the IPDM. They didn't provide one for every car in the manual. Give me a few minutes to see what I can come up with.
I am trying to locate the diagram right now. Please stand by.
Ok, here is a diagram of the IPDM terminal arrangement. I highlighted the 2 you should swap. The IPDM is mounted in the passenger side rear corner of the engine room.
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That being the case I would assume the ecm itself is the problem.
It would store codes for the cam and crank sensors if they were a problem. Unless you recently had the flywheel off for some reason I think you have a bad computer happening here.
Well, the check engine light flashing has to be something going on with the computer if it's not the power supply to the computer causing it. Might want to try swapping the ignition relay to be sure, but sounds like the ecm is bad. I hate to tell you they are bad as much as the next guy, lol. But if it's not the ecm relay that really seems like the next step here.
In my opinion yes, and the thing is the ecm has to be reprogrammed for the keys.
But you should still get spark. Make sure the security light isn't on solid while you are cranking this. If it is, then it's a security issue, but the blinking check engine light seems like the ecm is the problem
Negative, you would have to have all the keys and the nats transponder as well. The chip in the key holds the programming and sends it to the ecm so it will not disable the fuel injectors.
Yes, the immobilizer only turns off the fuel injection, not spark, so you should know right away if the computer is causing the lack of spark.
You're very welcome.
I would clean up that ground wire. Especially if its a large ground. Hadn't seen a bad ground cause this with this model, but it could be making the check engine light flash.
That's not one I would consider a major ground, but they all count. I can't see that as the smoking gun though to be honest.
The flashing check engine light really bothers me. Make sure the main ground from the battery isn't broken
Security light is out with the key on?
still no codes?
If not, try unplugging the bank 1 cam sensor and see if you get any spark.
Still thinking you have an issue with the computer on this.
Sorry, I am not sure what you are asking me?
Signal cable? Do you mean wire?and signal for what? lol
The odd color on each coil is the signal wire. all will have the same color power wire, same color ground wire, then there are 6 different color wires, those are the signal wires.
ground comes from the computer to trigger the coil and make it fire.
Here is a diagram of the harness connector on the computer. The colors are the same at the injector as the computer end.
I highlighted the group of 6 wires
g/r #81, #80 GY #79 GY/R
#60 Pu/W, #61 blue/red #62 Y/R
you should see them go to ground.
However the real method of testing is checking resistance on each wire to make sure they aren't broken