Neutral saftey switch bypass? - ClubLexus - Lexus Forum Discussion


LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Neutral saftey switch bypass?

Reply
 
 
 
Thread Tools Search this Thread
Old 12-13-13, 05:53 PM   #1
usoff89
Lexus Test Driver
Thread Starter
iTrader: (2)
 
usoff89's Avatar
 
Join Date: Jun 2012
Location: florida
Posts: 1,144
Thanks: 0
Thanked 0 Times in 0 Posts
Default Neutral saftey switch bypass?

What needs to be done to bypass the neutral safety switch on my 93? I've searched and only found a FEW things but they were for the SC's. I cant find any info on the LS platform. Any help would be greatly appreciated!

I plan on eventually wiring into the clutch so it wont start without the clutch engaged but for now I just need to bypass it so she will start up and run.
usoff89 is offline   Reply With Quote
Old 12-13-13, 06:39 PM   #2
usoff89
Lexus Test Driver
Thread Starter
iTrader: (2)
 
usoff89's Avatar
 
Join Date: Jun 2012
Location: florida
Posts: 1,144
Thanks: 0
Thanked 0 Times in 0 Posts
Default

On the SC forum a guy that did a 5spd swap said you have to just jump two wires together on the old auto trans plug for the NSS, but I'm not sure which wires or if that goes for the LS also?
usoff89 is offline   Reply With Quote
Old 12-13-13, 06:47 PM   #3
k7q
Lexus Test Driver
iTrader: (33)
 
Join Date: Jul 2010
Location: ca
Posts: 972
Thanks: 0
Thanked 5 Times in 5 Posts
Default

https://www.clublexus.com/forums/per...o-crank-2.html


i did this to my 92 SC400. should be the same for LS400 since i had a LS tranny in my SC. that was just temporary i solder, heat shrink and ran some wires to the clutch switch.
k7q is offline   Reply With Quote
Old 12-13-13, 08:00 PM   #4
usoff89
Lexus Test Driver
Thread Starter
iTrader: (2)
 
usoff89's Avatar
 
Join Date: Jun 2012
Location: florida
Posts: 1,144
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Thanks! I'll give it a shot tomorrow.
usoff89 is offline   Reply With Quote
Old 12-13-13, 08:01 PM   #5
Yamae
Lexus Champion
 
Join Date: Aug 2011
Location: Japan
Posts: 1,817
Thanked 57 Times in 44 Posts
Default

Below are originally prepared for a JDM Celsior to show how to clean contacts for "D" electrically but you will notice that the bypass of the neutral safety switch can be done shorting pin 5 and 6.
Yamae is online now   Reply With Quote
Old 12-13-13, 08:12 PM   #6
usoff89
Lexus Test Driver
Thread Starter
iTrader: (2)
 
usoff89's Avatar
 
Join Date: Jun 2012
Location: florida
Posts: 1,144
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Thanks Yamae for confirming this. I'm going to put the trans in tonight and fire it up tomorrow to make sure it starts up.
usoff89 is offline   Reply With Quote
Old 12-13-13, 11:22 PM   #7
usoff89
Lexus Test Driver
Thread Starter
iTrader: (2)
 
usoff89's Avatar
 
Join Date: Jun 2012
Location: florida
Posts: 1,144
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Ok just for future reference if anybody needs it. Before jumping 5 and 6 in the diagram above my car did not start. I put a 10amp fuse in 5 and 6 and she fired right up like normal. So yes all you need to do is jump the two together. I'll be cutting these and routing them up to the clutch pedal soon.
usoff89 is offline   Reply With Quote
Old 12-15-13, 03:16 AM   #8
PureDrifter
BahHumBug
iTrader: (10)
 
PureDrifter's Avatar
 
Join Date: Aug 2004
Location: California
Posts: 23,754
Thanked 13 Times in 12 Posts
Default

Or you can just wire it into the clutch safety switch if you're using an oem clutch pedal. (for toyota/nissan, both iirc are closed ircuit when clutch-in though I may be off).
PureDrifter is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Neutral safety switch question. Stretch21 GS - 2nd Gen (1998-2005) 0 07-06-16 06:15 PM
2JZGTE VVTi swap help please! KonThai Performance & Maintenance 26 04-05-15 07:54 PM
How to by pass the safety switch marucus1 Performance & Maintenance 2 12-03-14 11:17 AM
SC300 w58 swap wiring question. NSS related. Gspec Performance & Maintenance 10 01-13-14 10:25 PM
Adjusting clutch engagement? Or slave cylinder/Master wont shift when on is3t Performance 5 02-15-13 06:53 PM


Tags
92 , automatic , bypass , located , ls400 , neutral , nuetral , pass , safety , sc400 , switch

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -7. The time now is 02:46 AM.


Copyright © 2000-2017 Internet Brands, Inc. All Rights Reserved We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: