Seedy Al Posted April 10, 2016 Share Posted April 10, 2016 Hey guys, I know this seems odd, but anyone had any fun wiring in a Toyota A43D Auto trans before? Don't ask why, but currently am trying to fit one onto a car that used to be manual, so have nothing to start with. Looking at the wiring vs gearbox. Left hand side has two wires, black for the overdrive, and pink for what I assume is the trans lock up solenoid?? Unless someone can correctly tell me what the flip the thing is at the very back of the trans on left hand side (will find a pic) Assume that is the lock up solenoid, I'm a little confused on how it should be switch slashed what switches it, as there is no ecu control here..... On the drivers side there is just the inhibitor switch, this has 4 wires, Black, white, pink and blue. Anyone have any idea what wires take care of what? If I were to guess, I would assume there is a general earth wire, A wire for park signal, a Wire for Neutral, and one for reverse? Cheers guys, any help would be lovely. Quote Link to comment Share on other sites More sharing options...
Yowzer Posted April 10, 2016 Share Posted April 10, 2016 I don't think the A43D has a lockup converter, I think only the A43DL or DE has the lockup. I'm not 100% on that though Quote Link to comment Share on other sites More sharing options...
vivaspeed Posted April 10, 2016 Share Posted April 10, 2016 Does it have an electronic speed sensor or something? They often hang off the back. Quote Link to comment Share on other sites More sharing options...
Seedy Al Posted April 10, 2016 Author Share Posted April 10, 2016 this thing then? its possible its a DL, I actually haven't checked the trans number. Either way they are still both non electronically controlled........ Quote Link to comment Share on other sites More sharing options...
vivaspeed Posted April 10, 2016 Share Posted April 10, 2016 I did some googling because I was curious, and that seems to be a DL. I found a diagram a of A43D and the piece in front with the 2 bolt flange is the O/D solenoid, and didn't have the rear piece. Also used in Volvo 740s etc so there are a few diagrams around. Quote Link to comment Share on other sites More sharing options...
AllTorque Posted April 10, 2016 Share Posted April 10, 2016 Remind me to have a look at work tomorrow. Quote Link to comment Share on other sites More sharing options...
thegreatestben Posted April 10, 2016 Share Posted April 10, 2016 I have two toyota trans repair manuals, I'm not sure if they have wiring info but if you want to have a look at them, they're in this pile: Quote Link to comment Share on other sites More sharing options...
AllTorque Posted April 10, 2016 Share Posted April 10, 2016 This is all there is about electronics in the A43 repair manual What model car is the Trans from? 1 Quote Link to comment Share on other sites More sharing options...
Seedy Al Posted April 10, 2016 Author Share Posted April 10, 2016 Toyota Crown MS112 But I have one there from an MA45 which is exactly the same wiring Anything with an E after it wont work, as that means electronic control. thanks heaps Roger! Quote Link to comment Share on other sites More sharing options...
AllTorque Posted April 11, 2016 Share Posted April 11, 2016 Can't find any crown books, but here is Cressida. Quote Link to comment Share on other sites More sharing options...
AllTorque Posted April 11, 2016 Share Posted April 11, 2016 Gear selector switch. Quote Link to comment Share on other sites More sharing options...
AllTorque Posted April 11, 2016 Share Posted April 11, 2016 Overdrive switch. 1 Quote Link to comment Share on other sites More sharing options...
Yowzer Posted April 11, 2016 Share Posted April 11, 2016 Actually I think I might have a book somewhere covering these trans too. This is also relevant to my interests as I have the same box in my MS65 that I need to wire up Quote Link to comment Share on other sites More sharing options...
Seedy Al Posted April 11, 2016 Author Share Posted April 11, 2016 have been considering driving to the library and having a look Funny thing is I must have covered at least some of this when I wired up the trans in the MS63 from Diddy But that was so long ago, and I remember now that I failed to sus the reverse lights and wired in a micro switch working off the column change lol Was actually thinking, maybe there is meant to be power at the Inhibtor switch and not an earth as I thought....... hmmm........ Might need to put the fuse box back in the other car and check the wires.......... Quote Link to comment Share on other sites More sharing options...
vivaspeed Posted April 11, 2016 Share Posted April 11, 2016 Are you sure the inhibitor switch is a not through switch (i.e. wire in and out), rather than an earthed switch? Quote Link to comment Share on other sites More sharing options...
Seedy Al Posted April 11, 2016 Author Share Posted April 11, 2016 Im not really sure of anything yet till I jam my muiltimeter on there haha Was thinking its interesting that there is a pink wire on the inhibitor and a pink wire on what I assume is the torque converter lock up solenoid If I were to guess, the pink on the inhibitor is engaged when in D, and then transfers over to the Torque converter solenoid which is always on while in D, and actually locks the converter when the governing pressure meets a certain requirement internally...... Quote Link to comment Share on other sites More sharing options...
Seedy Al Posted April 11, 2016 Author Share Posted April 11, 2016 I actually found a factory Toyota owners manual for crown in the glove box, but it tells me nothing lol colours don't match. still no idea what im dealing with haha Quote Link to comment Share on other sites More sharing options...
AllTorque Posted April 11, 2016 Share Posted April 11, 2016 I thought this might help also. Starter circuit from a 89 Cressida manual for a 5M-G. The 84 manual has the same wire colours in and out of the neutral switch. Quote Link to comment Share on other sites More sharing options...
Seedy Al Posted April 17, 2016 Author Share Posted April 17, 2016 So this turned out a lot easier than I expected. Vehicle I was putting the trans ins, happened to have plugs corresponding to the trans. IE, there were two wires that came out of the fire wall and were plugged together. Unplugging them showed that the car will no longer wind over, boom town, inhibitor swtich wiring plugs straight in. Still had to run some wiring for the over drive tho, as I could not find any wiring for that under the dash. Its probably there somewhere,but very much could not find it. Also my center consol wiring was just as easy, found a plug taped up under dash, pulled it down, plugged it in, boom, have hand brake light etc. So I'm going to let Toyota off for now, as I had been cursing it a bit recently with What I had been doing. SO To sum up Inhibtor swtich wiring Black and white are your actual start wires, so join in park and neutral Pink and blue are your reverse light wires Black on the other side Is the over drive solenoid, must have fuck all draw, wiring diagram in my manual shows it to be directly powered from the gauge wiring circuit, no relay etc. And the pink, on the left hand side, I still have no idea about and don't care any more lol 2 Quote Link to comment Share on other sites More sharing options...
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