Ok I am trouble shooting a no start no spark on a 06 g35 and I am having trouble locating the power transistor. Anyone know where its at? Thanks

 

The power transistors are located inside each individual coil plug. If the power transistor is bad, you would just replace the entire coil plug.

 

Dang I was hopeing it was seperate. I got no spark on any cylinders.

Do you happen to know if the cam sensors trigger the spark command?

 

The ECM controls the spark command I'm pretty sure. If you have no spark on any cylinder, I would guess it is NOT the coil packs.

 

Yea i have 12v supply to all the coil plugs but Im not getting a command from the ECU to ground/calapse the field.

Do you know if the immobilizer triggers a no spark command to the ecu?

 

The immobilizer just shuts down the fuel pump I believe. I cannot say for sure it does not turn off the spark. Is your security LED still lit? That's your best indication the immobilizer is still working.

 

Nope the light goes off while starting and does the normal 2.4 sec flash when unarmed. Armed does the 30 solid then back to 2.4 sec flash.

 

did you find a fix for this situation? I'm currently fighting the same battle 😭

 

This was a long time ago but I remember it vividly. It was towed to us from the stealership and they couldent figure it out. Broke out my oscilloscope and looked at the pulses coming off the crank sensor and cam and saw that there was something out of time. Turns out the PO or dealer must have done a clutch job or something and put the flywheel on one hole off so the crank pickup was way out of time and would give no spark. so I unbolted the flywheel and put it back on timed correctly. Fired right up no issues.