Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Hey there, what happened prior to this? any significant? did the vehicle stall while driving or what?
What happens when you turn the key to ON position? Do you get a security light that stays on solid? or the condensor fan coming on?
Sorry I am not on in the evenings very much as I am home with my family. I replied over 3 hours ago when I was online
i asked you some questions in my initial reply. Please answer those so I can help you.
Guess you stepped away. When you get a chance please answer my questions and we can continue tomorrow.
Thank you, ***** ***** engine will crank have you checked for spark or tried starting fluid
Thanks, ***** ***** have power to the coils and no spark when cranking.
Then more than likely the problem is the cam sensor.
Not really any way to test the cam sensor unless your scan tool has a lab scope or you have an oscilloscope.
If/when you replace the came sensor you want to be sure to get a dealer sensor here. The auto parts stores are selling crank sensors in place of cam sensors on these trucks which look identical but the resistance specs are different which cause starting issues and phantom codes.
For what it's worth though, most no spark issues are related the IPDM or the ECM relay in the IPDM. When this happens though there is no poer at the coils.
Assuming you swapped the relays, the condensor fan is not running with key ON, you have power at the coils, but still no spark.
Then it's almost certainly going to be the cam sensor UNLESS you did some major work your telling me like replace the transmission or driveplate or something like that.
So if what your telling me is correct I'd go far enough as to recommend replacing the cam sensor without even doing more testing.
it should, but it doesnt ALWAYS throw a code if the wave is still there but just inconsistant so the ECM can determine timing.
and I have only 1 time seen a timing chain issue on these trucks so I doubt its that, these timing chains on these trucks are CRAZY reliable.
This is more of a process of previous elimination.
There are only so many things that can cause a no spark condition here. You already ruled out the IPDM, ECM relay, FUSES. Then since timing is so reliable and you have power at the coils we know it's not a wiring issue. So unless you just have an issue with a ground a complete ground wire broken or something, then I can't see any other possiibilities from your responses.
Yea, no RPM signal is an obvious indication of a cam/crank sensor not picking up the signal.
The ECM side provides a ground pulse
it will be like 0-.2v
are you talking about 3 different cam sensors between the year models?
because the Titan only has ONE cam sensor, on the early years it was on the rear of the head on the drivers side, but later years like yours it was on the front and super easy to access.
are you talking about the IVT solenoids? Those are not cam sensors
This is your only cam sensor.
you have two similar sensors, one at the top of each cylinder head called Intake valve timing control position sensors. Those are different.
Excellent, talk to you soon then.
wow, what on earth.
now that you replaced the sensors does it throw any codes?
Still no spark I assume?
and your SURE if you turn the key to ON the condensor fan doesn't come on?
Gnerally when the IPDM or ECM fails the condensor fan comes on. This is a fail safe for a control unit failure.
Now that's not ALWAYS the case when its a driver failure on an individual circuit, but those are far less common. Especially if you haven't has any issues with the coils like a bad ground wire on the engine or any blistered coils or anything of that nature then it's less likely to have a failed driver just all the sudden.
I mean you can check and make sure the sensors get their 5v signal from the ECM when key is ON. I understand they are not sending a reference signal because your not getting an RPM reading, but are they even getting a power signal?
Excellent, probably just wore the battery down prior to replacing the sensors.
So your saying that the truck had NO SPARK before the battery replacement? then had SPARK after the battery replacement?
yea, that don't make any sense at all.
Your story isn't really making sense here, you said the engine was CRANKING but didn't have spark?
Be sure your giving accurate responses if you even use this service again, we are not at the vehicle and rely solely on your responses in order to proceed with the best route of diagnostics.
No need to reply, this has already been sent to the staff of the site.