Hi, I've got a 1993 3VZ-E A/T that is used on a remote island, so field repairs only. It's showing the standard neutral safety switch (NSS) symptoms - no start in Park or Neutral, can get it to start by pulling the shifter lever. There's no way I'm going to be able to get it off to replace it, so I need to bypass it. I found the following advice, but the NSS plug is nearly unreachable from below and I worry about snapping it. The wiring diagram looks like pins 15 and 22 at IH1 in the wiring harness could be jumped to do the same thing, but I'm not exactly clear where IH1 is either
Any help on a bypass would be great.
"As I was unable to find it anywhere, here it is: if you are needing to bypass the neutral safety switch, to either rule it out or temporarily bypass until its fixed, disconnect the plug that connects to the transmission at the neutral switch location. The two wires needed to jump are the larger black and the black-yellow wires that feed into the female section of the plug. I used spade terminals to insert into the plug in order to easily put back to stock once repair is made. Otherwise, if you just want to jump it out and leave as such, I would suggest tapping into the "B" & "N" terminal wires that while still allowing them to feed into the plug. Essentially making an "H" with the wires."
Any help on a bypass would be great.
"As I was unable to find it anywhere, here it is: if you are needing to bypass the neutral safety switch, to either rule it out or temporarily bypass until its fixed, disconnect the plug that connects to the transmission at the neutral switch location. The two wires needed to jump are the larger black and the black-yellow wires that feed into the female section of the plug. I used spade terminals to insert into the plug in order to easily put back to stock once repair is made. Otherwise, if you just want to jump it out and leave as such, I would suggest tapping into the "B" & "N" terminal wires that while still allowing them to feed into the plug. Essentially making an "H" with the wires."
