Bypass neutral safety switch
#3
Race Director
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
Other than that...SORRY...I do not modify around any safety feature...it is a liability thing for me.
DUB
#4
Drifting
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
Other than that...SORRY...I do not modify around any safety feature...it is a liability thing for me.
DUB
#8
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".
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
#10
Drifting
Honestly, you have lost some of my respect for you in this post. Unless, this is a manual car?
#12
#13
The starter enable relay is wired between the Ign switch and the NSS
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
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
#16
Race Director
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.
#17
Race Director
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
#18
Race Director
#19
There are documented faults in the FSM
Just repeating what I already stated above in post # 8
Seeing the TCC is only activated when the car is in motion unlikely it will engage with the car stationary regardless of whether the ECM
knows if the trans is in or out of gear..............
Which both Cliffy and I previously stated ;
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
Seeing the TCC is only activated when the car is in motion unlikely it will engage with the car stationary regardless of whether the ECM
knows if the trans is in or out of gear..............
Which both Cliffy and I previously stated ;
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
Last edited by vetteoz; 11-08-2013 at 06:54 PM.
#20
Drifting
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
Last edited by MrWillys; 11-08-2013 at 08:52 PM.