Possible to start engine without depressing on clutch??

RedBullRR · 11-04-2010, 02:05 PM

It's like that for a reason. Saftey! If you want an autostart they sell legitimate alarm systems that are costly but will give you autostart in a safe manner. Had a Compustar alarm system on my car about 700 bucks with autostart. You had a process before shutting the car off, but it was something you do anyway. Very cool so you didnt start the car in gear. If you opened and closed the door it will disengage the autostart. Again expensive but I enjoyed it.

ykz · 11-07-2010, 11:15 PM

just did this on my car. Installing relay provisions for my remote start i ordered. I used two relays as there are actually two switches on the clutch pedal.

Relay#1 - to open the circuit for clutch pedal position switch coming out of pin 99 at the BCM (a 12V input is normally found on this pin at rest which must be interupted to allow a start)

Relay#2 - to apply 12v to the clutch interlock switch circuit at pin 114 of the BCM. (this pin has 0Volts at rest and requires 12v to allow a start)

Following that just apply a ground pulse to the start button circuit at pin 89 on the BCM and voila, your car starts with no clutch, no push button.

I will be using a proximity key bypass module that powers up the key fob only for the start of the car then powers it off once started. That way the key fob is dead after the car is started and you cannot walkup to the car and unlock the doors with the door unlock request button.

ChrisSlicks · 11-08-2010, 07:11 AM

Quote:

Originally Posted by ykz

just did this on my car. Installing relay provisions for my remote start i ordered. I used two relays as there are actually two switches on the clutch pedal.

Relay#1 - to open the circuit for clutch pedal position switch coming out of pin 99 at the BCM (a 12V input is normally found on this pin at rest which must be interupted to allow a start)

Relay#2 - to apply 12v to the clutch interlock switch circuit at pin 114 of the BCM. (this pin has 0Volts at rest and requires 12v to allow a start)

Following that just apply a ground pulse to the start button circuit at pin 89 on the BCM and voila, your car starts with no clutch, no push button.

I will be using a proximity key bypass module that powers up the key fob only for the start of the car then powers it off once started. That way the key fob is dead after the car is started and you cannot walkup to the car and unlock the doors with the door unlock request button.

Nice job.

How much did the proximity key module end up costing you?
Is it a regular fob that you removed the battery from or something else?
Did you do anything for neutral detection?

ykz · 11-09-2010, 07:13 PM

The bypass module cost $40. Its the type that you remove the battery from the fob and it powers the fob up through its own wiring. I have done anything for the neutral switch yet....still trying to think up something safe/creative.

ChrisSlicks · 11-09-2010, 08:13 PM

In the transmission section of the manual it mentions a park/neutral switch connector for the 6MT for vehicles with and without S-mode so that might be something you can tap into. See page TM-44 for the exploded view (item 6).

In the BCM section of the manual it is referred to as the "SFT PN/N SW". It appears to connect to pin 140 and is at 12V (battery voltage) when in neutral and 0V when in gear. See BCS-68.

ykz · 11-10-2010, 01:43 PM

Thats great. Just might work but i gotta check my car first and see if its actually there. Unfortunately my car does not have S-mode. The service manual says the switch is there s-mode or not, but the BCM section says pin 140 is only used if you have an A/T or an M/T with S-mode and nothing on M/T non S-mode. Even if its not, its the same transmission case nearest i can tell and the neutral switch and plunger only come out to $20. Not sure how i missed this but thanks for pointing me in that direction! I naturally assumed there would be no neutral switch.

ChrisSlicks · 11-10-2010, 02:54 PM

The transmission manual indicates the neutral switch is there for both with and without S-mode but the BCM manual indicates it is only present if you have S-mode. Either one of these 2 manuals is wrong or there is a wire going nowhere. Hope you can figure out a solution.

tvfreakazoid · 11-15-2010, 04:04 AM

I read in a paper column that modern cars you dont' have to "warm" them up because they are fuel injected. Not sure what exactly that means but that's what i've read.

ChrisSlicks · 11-15-2010, 07:09 AM

Quote:

Originally Posted by tvfreakazoid

I read in a paper column that modern cars you dont' have to "warm" them up because they are fuel injected. Not sure what exactly that means but that's what i've read.

The engine doesn't need to be warmed up before normal driving but it sure helps when your trying to get a sheet of ice off the windshield. I have remote start in all my Winter vehicles.

11-09-2010, 08:13 PM	#5 (permalink)
ChrisSlicks A True Z Fanatic Join Date: Mar 2009 Location: North East Posts: 6,203 Drives: 09 370Z Sport M6 Rep Power: 655	In the transmission section of the manual it mentions a park/neutral switch connector for the 6MT for vehicles with and without S-mode so that might be something you can tap into. See page TM-44 for the exploded view (item 6). In the BCM section of the manual it is referred to as the "SFT PN/N SW". It appears to connect to pin 140 and is at 12V (battery voltage) when in neutral and 0V when in gear. See BCS-68. __________________ Hotchkis ARB \| Stillen CAI \| Art Pipes \| Berk CBE \| Stillen AP Racing Brakes \| AE Performance Oil Cooler \| BC Racing ER Coilovers \| Doran Control Arms

11-10-2010, 02:54 PM	#7 (permalink)
ChrisSlicks A True Z Fanatic Join Date: Mar 2009 Location: North East Posts: 6,203 Drives: 09 370Z Sport M6 Rep Power: 655	The transmission manual indicates the neutral switch is there for both with and without S-mode but the BCM manual indicates it is only present if you have S-mode. Either one of these 2 manuals is wrong or there is a wire going nowhere. Hope you can figure out a solution. __________________ Hotchkis ARB \| Stillen CAI \| Art Pipes \| Berk CBE \| Stillen AP Racing Brakes \| AE Performance Oil Cooler \| BC Racing ER Coilovers \| Doran Control Arms

11-15-2010, 04:04 AM	#8 (permalink)
tvfreakazoid A True Z Fanatic Join Date: Jan 2009 Location: kommie kali Posts: 1,238 Drives: 2015 Audi S5; 6spd. Rep Power: 10326	I read in a paper column that modern cars you dont' have to "warm" them up because they are fuel injected. Not sure what exactly that means but that's what i've read. __________________ Mudders milk

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11-04-2010, 02:05 PM	#1 (permalink)
RedBullRR Enthusiast Member Join Date: Oct 2010 Location: Suffolk Posts: 336 Drives: 2010 370Z Red Rep Power: 16	It's like that for a reason. Saftey! If you want an autostart they sell legitimate alarm systems that are costly but will give you autostart in a safe manner. Had a Compustar alarm system on my car about 700 bucks with autostart. You had a process before shutting the car off, but it was something you do anyway. Very cool so you didnt start the car in gear. If you opened and closed the door it will disengage the autostart. Again expensive but I enjoyed it.

11-07-2010, 11:15 PM	#2 (permalink)
ykz Base Member Join Date: Nov 2010 Location: Yellowknife Posts: 9 Drives: 09 370z PG M6 Rep Power: 16	just did this on my car. Installing relay provisions for my remote start i ordered. I used two relays as there are actually two switches on the clutch pedal. Relay#1 - to open the circuit for clutch pedal position switch coming out of pin 99 at the BCM (a 12V input is normally found on this pin at rest which must be interupted to allow a start) Relay#2 - to apply 12v to the clutch interlock switch circuit at pin 114 of the BCM. (this pin has 0Volts at rest and requires 12v to allow a start) Following that just apply a ground pulse to the start button circuit at pin 89 on the BCM and voila, your car starts with no clutch, no push button. I will be using a proximity key bypass module that powers up the key fob only for the start of the car then powers it off once started. That way the key fob is dead after the car is started and you cannot walkup to the car and unlock the doors with the door unlock request button.

11-09-2010, 07:13 PM	#4 (permalink)
ykz Base Member Join Date: Nov 2010 Location: Yellowknife Posts: 9 Drives: 09 370z PG M6 Rep Power: 16	The bypass module cost $40. Its the type that you remove the battery from the fob and it powers the fob up through its own wiring. I have done anything for the neutral switch yet....still trying to think up something safe/creative.

11-10-2010, 01:43 PM	#6 (permalink)
ykz Base Member Join Date: Nov 2010 Location: Yellowknife Posts: 9 Drives: 09 370z PG M6 Rep Power: 16	Thats great. Just might work but i gotta check my car first and see if its actually there. Unfortunately my car does not have S-mode. The service manual says the switch is there s-mode or not, but the BCM section says pin 140 is only used if you have an A/T or an M/T with S-mode and nothing on M/T non S-mode. Even if its not, its the same transmission case nearest i can tell and the neutral switch and plunger only come out to $20. Not sure how i missed this but thanks for pointing me in that direction! I naturally assumed there would be no neutral switch.