I recently installed a new 6 speed trans in my car. Everything went well and I’m almost 100% sure I didn’t forget anything. Problem I’m having is, the car won’t turn over at all. It’s like if you go to start a manual car without pushing in the clutch. Lights and everything work but ill push it the clutch, turn the key and everything cuts out. I read somewhere about the clutch switch and I messed with that but I really don’t think it’s that. Only thing I haven’t done is properly bled the clutch. Could that have something to do with it? I’m really stumped. All connectors underneath the car plugged in as it should.

 

Have you reviewed the Starting System in the FSM?

https://www.nicoclub.com/service-manual?fsm=G35+G37+Q40%2FG35%2FSedan%2F2006%2Fsc.p df

See Page SC-9

Use your multimeter and be sure that you have a fully charged battery.

You did not mention your year or model so this is for a 2006 G35 manual

STARTING SYSTEM PFP:23300
System Description NKS000S9
M/T MODELS
Power is supplied at all times

through 40A fusible link (letter M, located in the fuse and fusible link block)

to ignition switch terminal 1,

through 15A fuse (No. 78, located in the IPDM E/R)

to CPU of IPDM E/R,

through 10A fuse (No. 71, located in the IPDM E/R)

to CPU of IPDM E/R.
With the ignition switch in the ON or START position, power is supplied

through ignition relay

to CPU of IPDM E/R,

through 10A fuse (No. 89, located in the IPDM E/R)

through IPDM E/R terminal 25

to clutch interlock switch terminal 1.
When the clutch pedal is depressed, power is supplied

through clutch interlock switch terminal 2

to IPDM E/R terminal 53.
Ground is supplied

to IPDM E/R terminals 38, 50 and 60

from grounds E17 and E43.
Then starter relay is turn ON.
With the ignition switch in the START position, IPDM E/R is energized and power is supplied

from ignition switch terminal 5

to IPDM E/R terminal 4 and

through IPDM E/R terminal 3

to starter motor terminal 1.
The starter motor plunger closes and provides a closed circuit between the battery and starter motor. The
starter motor is grounded to the engine block. With power and ground supplied, cranking occurs and the
engine starts

You may have an issue in your wiring harness?

Good luck

 

thanks. I will look into that. My car is an 03 and I was told the trans came out of an 04 350z

 

For an 03 Manual

https://www.nicoclub.com/service-man...F2003%2Fsc.pdf


STARTING SYSTEM PFP:23300
System Description AKS007VT
M/T MODELS
Power is supplied at all times:

through 40A fusible link (letter M, located in the fuse and fusible link box)

to ignition switch terminal 1

through 15A fuse (No. 73, located in the IPDM E/R)

to CPU of IPDM E/R.
With the ignition switch in the ON or START position, power is supplied:

through 10A fuse (No. 80, located in the IPDM E/R)

to CPU of IPDM E/R

through IPDM E/R terminal 26

to clutch interlock switch terminal 1.
When the clutch pedal is depressed, power is supplied:

through clutch interlock switch terminal 2

to IPDM E/R terminal 43.
Ground is supplied:

to IPDM E/ R terminals 14, 45 and 46

from body grounds E17 and E43.
Then starter relay is turn ON.
With the ignition switch in the START position, IPDM E/R is energized and power is supplied:

from ignition switch terminal 5

to IPDM E/R terminal 11 and

through IPDM E/R terminal 4

to starter motor terminal 1.
The starter motor plunger closes and provides a closed circuit between the battery and starter motor. The
starter motor is grounded to the engine block. With power and ground supplied, cranking occurs and the
engine starts.

Be sure your body grounds are intact while you trace the battery 12v towards the IPDM,clutch interlock switch and the starter

 

I'd start with the battery and make sure it's fully charged.

 

brand new battery!

 

Then I would go back under the car and verify everything got hooked up properly on the starter since it was removed to get the transmission out.

Big primary wire going to the battery and the smaller signal wire to close the starter solenoid.

 

thanks, I will go back under there and look over everything. I actually never disconnected any wiring on the starter. Just unbolted it and was able to let it sit there without touching the wiring.

 

Just to verify, you did disconnect the battery before doing all this yes?

 

yes, of course.

 

Ok then it shouldn't be something like a blown fusible link. It's a very simple circuit, clutch switch allows the power to go from the key, through the starter relay in the IPDM down to the starter solenoid. Probe for voltage at the starter solenoid (when the key is in the start position) if it isn't something obvious on the starter.

 

trying to back track everything I did. Do you think it could be related to the crankshaft position sensor? I had to put a new pilot bushing in and when I was loosening the clutch, the whole assembly turned a little.

 

So I jumped the clutch switch and also jumped the starter. The car is still doing the same thing..nothing. Won’t crank and cuts out power as if I’m not even pushing in the clutch. I’m completely stumped. Anyone have any other ideas on what this could be?

 

Turned out to be a bad starter! Not sure how it went bad just sitting there but that was the culprit! All good now!