Bypass neutral safety switch
How do I bypass the neutral safety switch at the switch?
|
Connect the two wires together. I would not do this other than for testing though. It's dangerous to have it start in gear. Don't ask how i know this?
|
I would not recommend it. The neutral safety switch is there for safety for ONE....and also this switch is used by the computer to tell it if it is in (Park/Neutral) or a (Drive) gear. The computer "thinks" that is is in PARK...and you are showing a throttle position angle and a vehicle speed. It will "freak out" and more than likely kick up a code...or start running "funny".
Other than that...SORRY...I do not modify around any safety feature...it is a liability thing for me. DUB |
Originally Posted by DUB
(Post 1585365393)
I would not recommend it. The neutral safety switch is there for safety for ONE....and also this switch is used by the computer to tell it if it is in (Park/Neutral) or a (Drive) gear. The computer "thinks" that is is in PARK...and you are showing a throttle position angle and a vehicle speed. It will "freak out" and more than likely kick up a code...or start running "funny".
Other than that...SORRY...I do not modify around any safety feature...it is a liability thing for me. DUB |
I completely agree, this is for testing purposes only. So connect the two larger wires together? The purple and yellow?
|
Why not just put a test light on the purple to see if it has power when cranking. Maybe not enough arms?
|
No power when cranking
|
Originally Posted by DUB
(Post 1585365393)
also this switch is used by the computer to tell it if it is in (Park/Neutral) or a (Drive) gear. The computer "thinks" that is is in PARK...and you are showing a throttle position angle and a vehicle speed.
It will "freak out" and more than likely kick up a code...or start running "funny". There is no feedback or error codes for it working or even being wired up. With my aftermarket shifter, I have not had that indication to the ECM for 8 years |
Originally Posted by jnorth
(Post 1585365582)
No power when cranking
|
Originally Posted by vetteoz
(Post 1585367780)
Is only a indicator to the ECM so it can adjust the RPM for being in or out of gear.
There is no feedback or error codes for it working or even being wired up. With my aftermarket shifter, I have not had that indication to the ECM for 8 years Honestly, you have lost some of my respect for you in this post. Unless, this is a manual car? |
Originally Posted by vetteoz
(Post 1585367786)
year model helps
|
Originally Posted by MrWillys
(Post 1585367835)
Then you have tolerated substandard operation, and are unfamiliar with the different tables and values dependent on whether the vehicle is in or out of gear.?
|
Originally Posted by jnorth
(Post 1585365582)
No power when cranking
Check for power on the yellow wire at the relay when key in start position Check for power out to the NSS on the yellow / blk wire If no power on the yellow at relay check for 12V out of the Ign switch on the same wire |
Are we still talking about my car guys? I don't want to get in the middle of anything, but mine is a 1990 automatic car.
|
Originally Posted by jnorth
(Post 1585368013)
Are we still talking about my car guys?
|
Originally Posted by MrWillys
(Post 1585365442)
The neutral safety switch allows 12 volts to pass when contacts are engaged. The park / neutral switch completes a ground signal when in par or neutral. Two completely different switches.
|
Originally Posted by vetteoz
(Post 1585367780)
Is only a indicator to the ECM so it can adjust the RPM for being in or out of gear.
There is no feedback or error codes for it working or even being wired up. With my aftermarket shifter, I have not had that indication to the ECM for 8 years AS written in a 1989 Factory Service manual Page 6E3-C1-3 "The Park/Neutral (P/N) switch indicates to the ECM when the transmission is in park or neutral.This information is used for the TCC and the IAC valve operation. IMPORTANT Vehicle should not be driven with park/neutral switch disconnected, as idle quality will be affected and a possible false code 24 (VSS). See section "8A" for more information on the P/N switch, which is part of neutral/start and backup light switch assembly". ALSO: In a Factory Service Manual for a 1993 Corvette. The IS a CODE 72 that deals with the gear selector switch. DUB |
Originally Posted by jnorth
(Post 1585368013)
Are we still talking about my car guys? I don't want to get in the middle of anything, but mine is a 1990 automatic car.
DUB |
Originally Posted by DUB
(Post 1585382730)
You need to read the service manual.
Originally Posted by DUB
(Post 1585382730)
"The Park/Neutral (P/N) switch indicates to the ECM when the transmission is in park or neutral.
Originally Posted by DUB
(Post 1585382730)
This information is used for the TCC
knows if the trans is in or out of gear..............
Originally Posted by DUB
(Post 1585382730)
which is part of neutral/start and backup light switch assembly
you were the one implying that bypassing the NSS being discussed in this thread "also this switch is used by the computer to tell it if it is in (Park/Neutral)" would affect the ECM :crazy2: |
Originally Posted by Cliff Harris
(Post 1585368623)
A more accurate description is "two parts of the same switch". There is only one switch assembly mounted on the shifter. It also controls the backup lights.
More like 3 switches in one? Mine is a B&M and they're separate. One allows a load to pass to the starter in Park / Neutral. One provides a signal for reverse lights (I don't know if it's a ground, or load). Another provides a ground signal when in Park / Neutral. It is possible to be a single unit, but it does 3 completely different things. Scott Vettoz, you got a schematic of this? http://www.oreillyauto.com/site/c/de...0039&ppt=C0335 |
All times are GMT -4. The time now is 11:43 AM. |
© 2024 MH Sub I, LLC dba Internet Brands