tranny sensors - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

My240 · 05-15-2006, 08:11 AM

i am in the process of converting my s13 from auto to 5 speed. i bought a tranny and the 3 sensors that are on the side had all been cut, this is not including the wheel speed sensor at the back. does anyone know what each of these sensors are for and how they wire up? thanks for your help

tre · 05-15-2006, 09:12 AM

You're local nissan dealership can tell you that

g6civcx · 05-15-2006, 09:22 AM

You need to get a lower engine harness that goes from the back of the gearbox from a manual gearbox. It plugs up to the engine room harness. If it's cut you have to manually wire them up yourself.

My240 · 05-15-2006, 09:36 AM

would you be able to explain that a bi5t further? i have no idea where the the harness would go into the engine room harness

g6civcx · 05-15-2006, 09:44 AM

Go to a local junkyard. If you can see one with a manual gearbox you could probably just unplug all the sensors and take out the whole harness.

If you don't have one you need to read the FSM. Try getting one from your local dealer.

If it's not possible you have to redo the wire harness yourself. That's as far as I can explain it because it is complicated. A shop would probably charge you 10 hours of labour to fabricate a gearbox harness from scratch.

My240 · 05-15-2006, 09:50 AM

alright man sounds good thanks for your help i really appreciate it. but if anyone else still has anymore input then feel free to put in your knowledge

mjjstang · 05-15-2006, 11:51 AM

why not just forget about it, you dont need any of that shti, the only useful one is speed and that is on the main harness.

My240 · 05-15-2006, 02:02 PM

so you're saying that those 3 sensors don't even really have a purpose? like what do they do? are they for the back-up lights at all? i mean there has to be a purpose to them

aznpoopy · 05-15-2006, 02:16 PM

get a FSM dude.

park neutral switch
reverse lamp switch
OD position switch

first two are obvious. i never figured out what the third one does. lol.

tre · 05-15-2006, 02:18 PM

OD... maybe Overdrive? When the car tends to lean itself out to give you premo gas mileage on the freeway?

aznpoopy · 05-15-2006, 02:26 PM

possibly. i think "OD" refers to 5th gear.

My240 · 05-15-2006, 02:48 PM

alright guys that was awesome. thanks for all your help.

g6civcx · 05-15-2006, 04:29 PM

It's the 5th gear indicator. The ECU does something with it, mostly for the top speed governor.

240silvia · 05-15-2006, 05:06 PM

The only two you need is the speed sensor in the back and the middle sensor. The middle sensor is for the back up lights. I only have those two hooked up.

My240 · 05-16-2006, 08:03 AM

sweet deal. thanks for the help guys i really appreciate it

dopeassjackson · 05-16-2006, 08:48 AM

from the tail of the tranny it goes back up switch, OD switch then neutral i think. the speed sensor is in there some where also.

My240 · 05-16-2006, 10:41 AM

keep the info commin. thanks. i ordered myself one of those service manuals on disc but it hasn't come in. but you guys are doing a great job

mjjstang · 05-16-2006, 11:44 AM

never needed a service manual on disc, and ive done a lot of work, how bout www.zeroyon.com????? FRREEEEEEEEEEE

g6civcx · 05-16-2006, 12:30 PM

In his defense, zeroyon doesn't have the SOCH FSM and convertible add-on.

My240 · 05-16-2006, 12:44 PM

well my KA is DOHC and it's not convertible. but i never knew about that site til now. but thanks

rancid240 · 05-16-2006, 12:48 PM

maybe a dumb question, but whats the purpose for the neutral sensor?

My240 · 05-16-2006, 02:33 PM

i was wondering about that aswel. i mean you're gunna be pushing in the clutch anyways so i don't even think you'd really need the neutral switch. or do i?

mjjstang · 05-16-2006, 09:32 PM

neutral is so you cant start the car when the clutch is not pushed in, at least this is what I think, I mean i can start mine in any gear i want with the pedal not pressed in, this is because I dont have my sensor connected. someone correct me if im wrong.

g6civcx · 05-16-2006, 09:53 PM

The neutral switch isn't used for starting. You can't start without pressing the clutch even if you're in neutral.

mjjstang · 05-17-2006, 01:01 AM

o yah silly me, anway i can start it no matter what, so i got something unplugged

My240 · 05-18-2006, 08:20 AM

so the only sensor that i really need is the one the turns on my back up lights?? and what do i connect that to?

rancid240 · 05-18-2006, 10:41 AM

Quote:

Originally Posted by My240

so the only sensor that i really need is the one the turns on my back up lights?? and what do i connect that to?

Im guessing autos dont have a plug for that. Well on a manual when the shifter is in reverse the sensor will, I dont know the word, but it will have 0 resistance. So what Im thinking that either the positive or the negative (more likely the negative) wire to the reverse lights will connect to one of the prongs, the other to a gournd, and the sensor completes the circuit when its in reverse.

My240 · 05-18-2006, 10:57 AM

i guess that would make sense about the connection, so as soon as you put it in reverse you'd complete to power circuit and it would turn on the lights right?

rancid240 · 05-18-2006, 03:33 PM

Quote:

Originally Posted by My240

i guess that would make sense about the connection, so as soon as you put it in reverse you'd complete to power circuit and it would turn on the lights right?

Thats what I am thinking.

Slyce · 05-18-2006, 04:35 PM

take a look at this

http://ka24development.com/cwilfert/...lectrical.html

05-15-2006, 08:11 AM	#1
My240 Join Date: Mar 2006 Location: germany Age: 23 Posts: 25 Trader Rating: (0)	tranny sensors i am in the process of converting my s13 from auto to 5 speed. i bought a tranny and the 3 sensors that are on the side had all been cut, this is not including the wheel speed sensor at the back. does anyone know what each of these sensors are for and how they wire up? thanks for your help

05-15-2006, 09:12 AM	#2
tre Zilvia Junkie Join Date: Apr 2006 Location: Seattle, WA Posts: 544 Trader Rating: (0)	You're local nissan dealership can tell you that __________________ I didn't buy an Audi because it is a Great Car, but for more of a reason to be an asshole.

05-15-2006, 11:51 AM	#7
mjjstang Post Whore! Join Date: Apr 2003 Location: Michigan Posts: 2,607 Trader Rating: (4)	why not just forget about it, you dont need any of that shti, the only useful one is speed and that is on the main harness. __________________ I was going to, but I can not think of a sig less than 75 characters.

05-15-2006, 02:18 PM	#10
tre Zilvia Junkie Join Date: Apr 2006 Location: Seattle, WA Posts: 544 Trader Rating: (0)	OD... maybe Overdrive? When the car tends to lean itself out to give you premo gas mileage on the freeway? __________________ I didn't buy an Audi because it is a Great Car, but for more of a reason to be an asshole.

05-16-2006, 11:44 AM	#18
mjjstang Post Whore! Join Date: Apr 2003 Location: Michigan Posts: 2,607 Trader Rating: (4)	never needed a service manual on disc, and ive done a lot of work, how bout www.zeroyon.com????? FRREEEEEEEEEEE __________________ I was going to, but I can not think of a sig less than 75 characters.

05-15-2006, 09:22 AM	#3
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 4,988 Trader Rating: (4)	You need to get a lower engine harness that goes from the back of the gearbox from a manual gearbox. It plugs up to the engine room harness. If it's cut you have to manually wire them up yourself.

05-15-2006, 09:36 AM	#4
My240 Join Date: Mar 2006 Location: germany Age: 23 Posts: 25 Trader Rating: (0)	would you be able to explain that a bi5t further? i have no idea where the the harness would go into the engine room harness

05-15-2006, 09:44 AM	#5
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 4,988 Trader Rating: (4)	Go to a local junkyard. If you can see one with a manual gearbox you could probably just unplug all the sensors and take out the whole harness. If you don't have one you need to read the FSM. Try getting one from your local dealer. If it's not possible you have to redo the wire harness yourself. That's as far as I can explain it because it is complicated. A shop would probably charge you 10 hours of labour to fabricate a gearbox harness from scratch.

05-15-2006, 09:50 AM	#6
My240 Join Date: Mar 2006 Location: germany Age: 23 Posts: 25 Trader Rating: (0)	alright man sounds good thanks for your help i really appreciate it. but if anyone else still has anymore input then feel free to put in your knowledge

05-15-2006, 02:02 PM	#8
My240 Join Date: Mar 2006 Location: germany Age: 23 Posts: 25 Trader Rating: (0)	so you're saying that those 3 sensors don't even really have a purpose? like what do they do? are they for the back-up lights at all? i mean there has to be a purpose to them

05-15-2006, 02:16 PM	#9
aznpoopy Post Whore! Join Date: Mar 2003 Location: New Jersey Age: 29 Posts: 4,800 Trader Rating: (1)	get a FSM dude. park neutral switch reverse lamp switch OD position switch first two are obvious. i never figured out what the third one does. lol.

05-15-2006, 02:26 PM	#11
aznpoopy Post Whore! Join Date: Mar 2003 Location: New Jersey Age: 29 Posts: 4,800 Trader Rating: (1)	possibly. i think "OD" refers to 5th gear.

05-15-2006, 02:48 PM	#12
My240 Join Date: Mar 2006 Location: germany Age: 23 Posts: 25 Trader Rating: (0)	alright guys that was awesome. thanks for all your help.

05-15-2006, 04:29 PM	#13
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 4,988 Trader Rating: (4)	It's the 5th gear indicator. The ECU does something with it, mostly for the top speed governor.

05-15-2006, 05:06 PM	#14
240silvia Nissanaholic! Join Date: Jul 2002 Location: Wilmington NC Age: 24 Posts: 2,022 Trader Rating: (0)	The only two you need is the speed sensor in the back and the middle sensor. The middle sensor is for the back up lights. I only have those two hooked up.

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05-16-2006, 08:03 AM	#15
My240 Join Date: Mar 2006 Location: germany Age: 23 Posts: 25 Trader Rating: (0)	sweet deal. thanks for the help guys i really appreciate it

05-16-2006, 08:48 AM	#16
dopeassjackson Zilvia Member Join Date: Oct 2005 Location: stone ridge NY Posts: 150 Trader Rating: (0)	from the tail of the tranny it goes back up switch, OD switch then neutral i think. the speed sensor is in there some where also.

05-16-2006, 10:41 AM	#17
My240 Join Date: Mar 2006 Location: germany Age: 23 Posts: 25 Trader Rating: (0)	keep the info commin. thanks. i ordered myself one of those service manuals on disc but it hasn't come in. but you guys are doing a great job

05-16-2006, 12:30 PM	#19
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 4,988 Trader Rating: (4)	In his defense, zeroyon doesn't have the SOCH FSM and convertible add-on.

05-16-2006, 12:44 PM	#20
My240 Join Date: Mar 2006 Location: germany Age: 23 Posts: 25 Trader Rating: (0)	well my KA is DOHC and it's not convertible. but i never knew about that site til now. but thanks

05-16-2006, 12:48 PM	#21
rancid240 Nissanaholic! Join Date: Jan 2002 Location: OC, CA Posts: 2,156 Trader Rating: (7)	maybe a dumb question, but whats the purpose for the neutral sensor?

05-16-2006, 02:33 PM	#22
My240 Join Date: Mar 2006 Location: germany Age: 23 Posts: 25 Trader Rating: (0)	i was wondering about that aswel. i mean you're gunna be pushing in the clutch anyways so i don't even think you'd really need the neutral switch. or do i?

05-16-2006, 09:32 PM	#23
mjjstang Post Whore! Join Date: Apr 2003 Location: Michigan Posts: 2,607 Trader Rating: (4)	neutral is so you cant start the car when the clutch is not pushed in, at least this is what I think, I mean i can start mine in any gear i want with the pedal not pressed in, this is because I dont have my sensor connected. someone correct me if im wrong. __________________ I was going to, but I can not think of a sig less than 75 characters.

05-16-2006, 09:53 PM	#24
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 4,988 Trader Rating: (4)	The neutral switch isn't used for starting. You can't start without pressing the clutch even if you're in neutral.

05-17-2006, 01:01 AM	#25
mjjstang Post Whore! Join Date: Apr 2003 Location: Michigan Posts: 2,607 Trader Rating: (4)	o yah silly me, anway i can start it no matter what, so i got something unplugged __________________ I was going to, but I can not think of a sig less than 75 characters.

05-18-2006, 08:20 AM	#26
My240 Join Date: Mar 2006 Location: germany Age: 23 Posts: 25 Trader Rating: (0)	so the only sensor that i really need is the one the turns on my back up lights?? and what do i connect that to?

05-18-2006, 10:57 AM	#28
My240 Join Date: Mar 2006 Location: germany Age: 23 Posts: 25 Trader Rating: (0)	i guess that would make sense about the connection, so as soon as you put it in reverse you'd complete to power circuit and it would turn on the lights right?

05-18-2006, 04:35 PM	#30
Slyce Join Date: Aug 2004 Location: AZ Posts: 9 Trader Rating: (0)	take a look at this http://ka24development.com/cwilfert/...lectrical.html

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