Manipulating Neutral Start Switch and Reverse Switch for Caldina Manual Conversion

[trd_st184]

Hey all,
I have to admit that this is a new area and I am undertaking a Manual Conversion on my ST215 Caldina. I will be using the auto ecu and want to be able to start the car and allow the reverse switch to work.

2 Area in particular have got me a bit stumped.

- Bridging Neutral Start Switch to allow the car to start
I don't have a wiring diagram for my car (I believe the only ones i've seen have been in japanese) so i'm not sure where these wires are located.
I am hoping that the wiring could be manipulated from the actual auto shifter itself.

- Reverse Switch
I am guessing this will be just a case of swapping over the auto reverse switch with the manual one if they are different. Is it often the case that reverse switches are different on auto and manual models?

Any hints on where I should go from here would be hugely appreciated.

[trd_st184]

Hey All,
Just a bit of updating. On looking up Toyodiy I have found the position of the neutral start switch. I am hoping that it will be just a matter of bridging the 2 wires. i wish I knew more about car electronics.
Part number - 84540

[trd_st184]

On further inspection so far i've found that the reverse switch has the same connector on it from what I can see (visible in the pic above with 84210 to the left of it) so that should be super easy.

I did check out the neutral start switch and there is a good 7-8 wires there so it may take a bit of diagnosis to try and nut out which one is which.

[worldwalker]

If you've got a multimeter just check for continuity when its in park Vs a drive gear. Eventually you'll track down 1 wire which only works in Park and Neutral. It was the second wire on a 4a.

[trd_st184]

If you've got a multimeter just check for continuity when its in park Vs a drive gear. Eventually you'll track down 1 wire which only works in Park and Neutral. It was the second wire on a 4a.

Great suggestion, i'll grab the multimeter out this weekend. Thanks

It should be just a case of finding an accessory + (or possibly constant +) wire to the wire that only works in park/neutral therefore bridging the gap?

I'm wondering if I should cut off the connector further up the loom and solder those wires together or try and adapt the connector itself to bridge those wires.

Thanks heaps
Adrian

[horse]

pm me your email. i have a wiring diagram

[trd_st184]

pm me your email. i have a wiring diagram

Your a legend thanks heaps horse. PM sent.

[trd_st184]

Its interesting in toyodiy that there is no reference to the position or part where the speed sender would be on the manual gearbox or the auto box

ToyoDIY.com

[stidnam]

Apparently the speed is worked out by the ABS sensors and the ABS ECU which talks to the main ECU.

[trd_st184]

Apparently the speed is worked out by the ABS sensors and the ABS ECU which talks to the main ECU.

Serious? thats awesome as. Thanks very much for the info. That would explain the 4 speed sensors on each of the wheels too.

That means the speedo and reverse switch are both covered. All thats left now is just the neutral start switch which i'll be able to nut out.

The only worrying thing left out of it all is just drilling the holes required for the clutch master cylinder. The holes are all marked out, i'm just wanting them to be absolutely perfect

I've been told to keep a bit of oil on the drill bit to stop it from heating up too much, and to use a chuck drill on a low rpm setting.

In the past whenever i've drilled through steel if the drill bit caught at any stage it would deform the metal around it (sorta like spinning a blanket from the middle)

[trd_st184]

I noticed something really interesting in my readings.

According to a wiring diagram it mentioned that in Park and Neutral gear, the voltage should be between 0-3 volts but when the car is in any gear apart from Park and Neutral it should be 9-12v.

Wouldn't that mean the ecu requires 0-3 volts from the neutral start switch to start the car?

[horse]

no it means it'll accept anything low, ie 0-3v. so if its' 0 you'll be fine. i.e ground that wire.

[trd_st184]

no it means it'll accept anything low, ie 0-3v. so if its' 0 you'll be fine. i.e ground that wire.

Thats excellent thanks very much.