jot_ie Posted March 13, 2005 Share Posted March 13, 2005 Right in the middle of fitting an rltc unit. Matt H kindly supplied the pin outs for the ecu and abs. Unfortunately The abs one doesnt seem to apply. In the photos, which one is the abs ecu? The one with the orange plugs or the metal one. Does anyone have the pinouts for the appropriate one. I need to get this done in the next few hours. Any / all help much apreciated 98 Supra vvti tt 6 speed manual j-spec John Quote Link to comment Share on other sites More sharing options...
LeeT Posted March 13, 2005 Share Posted March 13, 2005 its the metal ecu. cant help with the pinouts on a vvti though Quote Link to comment Share on other sites More sharing options...
jot_ie Posted March 13, 2005 Author Share Posted March 13, 2005 Thank leett Its a start. John Quote Link to comment Share on other sites More sharing options...
LeeT Posted March 13, 2005 Share Posted March 13, 2005 Thank leett Its a start. John have you tried contacting matth. im sure there was a thread on this not so long ago too Quote Link to comment Share on other sites More sharing options...
LeeT Posted March 13, 2005 Share Posted March 13, 2005 here you go, read simonb's post http://mkivsupra.net/vbb/showthread.php?t=33991&highlight=vvti+pinouts Quote Link to comment Share on other sites More sharing options...
jot_ie Posted March 13, 2005 Author Share Posted March 13, 2005 Thanks again leett I think that may have soprted it The common link between all the abs ecu's (jap, uk, vvti etc) seem to be the wire colours. Will give it a go John Quote Link to comment Share on other sites More sharing options...
jot_ie Posted March 14, 2005 Author Share Posted March 14, 2005 Quick update Still in trouble regarding the abs connections. I have two wheel speeds not registering The connections seem good. Could the pinouts be wrong. This is what I Connected Wheel Pin no ABS ECU Wire colour Rltc wire colour FR A21 - 3 Red Red FL A21 - 8 White Yellow RR A20 - 10 Blue Blue RL A20 - 22 Purple Green The pin numbering system is what I could find from previous threads re vvti abs ecu's. However the pin count does not match the abs unit I have, (see previous pics), although the wire colours do. At the moment, the yellow and green rltc wires are not picking up any wheel signals at all. Approaching insanity and blissfull oblivion John Quote Link to comment Share on other sites More sharing options...
merckx Posted March 14, 2005 Share Posted March 14, 2005 Is it possible to use a multimeter on the ABS wires and spin each wheel in turn to check for the four wires? The RLTC manual says I should be measuring resistance, can this be done? Do you need the ignition on, should the multiplug be plugged in? . Hope I can get mine done today. Quote Link to comment Share on other sites More sharing options...
merckx Posted March 14, 2005 Share Posted March 14, 2005 Quote Link to comment Share on other sites More sharing options...
jot_ie Posted March 14, 2005 Author Share Posted March 14, 2005 Merckx A small bit of advice Matt H gave me. Jack the car up (axle stands required) spin the wheels and probe the connections of the abs system. What to probe with I dont know. A multimetre maybe? So you are on the right track. I dont know if ignition should be on etc...... I dont have either axle stands or a multimetre and my driveway is on a large gradient. Was hoping someone, somewhere may have the correct pinouts. John Quote Link to comment Share on other sites More sharing options...
Ian C Posted March 14, 2005 Share Posted March 14, 2005 I've been wrestling with this and I think I've finally got the right pins/wires, just got to wire them up now That piccy looks like my ABS ECU, a 26pin and a 12pin. If, on that picture, you start the pin numbering from top right and head leftwards, pin 3 on the 12 pin plug is indeed red. Pin 8 is 2nd from the right and it's white. All the colours fit, as does the logical layout of the pins, so I'm confident it's correct. -Ian Quote Link to comment Share on other sites More sharing options...
jot_ie Posted March 14, 2005 Author Share Posted March 14, 2005 Ian Now I am really stumped. As you say, all the colours match up. I am confident all my connections are good. Let me know how you get on John Quote Link to comment Share on other sites More sharing options...
merckx Posted March 14, 2005 Share Posted March 14, 2005 I've been wrestling with this and I think I've finally got the right pins/wires, just got to wire them up now That piccy looks like my ABS ECU, a 26pin and a 12pin. If, on that picture, you start the pin numbering from top right and head leftwards, pin 3 on the 12 pin plug is indeed red. Pin 8 is 2nd from the right and it's white. All the colours fit, as does the logical layout of the pins, so I'm confident it's correct. -Ian Very helpful, I was expecting the pin numbers on the bottom row to follow round from the top. Didn't expect them to start from the right again! I've also got the red and white wires. On the 26 pin connector.Top row starting from right, pin 10 is blue/silver bands. Bottom row , pin 22 is purple/silver bands. On the ECU my injector wires are slightly different, I checked the wires on the injectors themselves. Can anyone confirm these are correct? I get: Injector 1 .. red/blue .......... 2 .. blue/red .......... 3 .. blue .......... 4 .. red/white .......... 5 .. red .......... 6 .. black/red Not sure about the rpm wire yet. Quote Link to comment Share on other sites More sharing options...
jot_ie Posted March 14, 2005 Author Share Posted March 14, 2005 Merckx The enclosed pic is a 1998 vvti ecu with the wiring pinouts for the injectors, rpm and 12v. These work perfectly. I wired these on saturday and all work correctly. I am at work all day, and cant help with the wire colours. I left all my other notes at home. Hope this helps. john Quote Link to comment Share on other sites More sharing options...
jot_ie Posted March 14, 2005 Author Share Posted March 14, 2005 Also you could try here http://www.supras.nl/view.php?page=modsJZA61VVTi.htm Its arnouts website. Just be aware that the pin numbering system is backwards for each block But the vvti pinouts and wire colours are correct, I think, for the corresponding locations. Hope this helps some more. Anyone got any more light to shed on the 98 abs ecu? John Quote Link to comment Share on other sites More sharing options...
merckx Posted March 14, 2005 Share Posted March 14, 2005 Cheers John, very helpful. Quote Link to comment Share on other sites More sharing options...
jot_ie Posted March 14, 2005 Author Share Posted March 14, 2005 No problem Merckx Guys Just found this thread. Some very usefull stuff here too. http://www.mkivsupra.net/vbb/showthread.php?t=6732&highlight=vvti+abs+ecu I have all the connections correct according to this. I am starting to think I have a bad connection, otherwise the rltc box may be faulty. Is that a possibility. John Quote Link to comment Share on other sites More sharing options...
jot_ie Posted March 14, 2005 Author Share Posted March 14, 2005 Also here http://www.mkivsupra.net/vbb/showthread.php?t=7416&highlight=vvti+abs+ecu This may be the most informative. Check Pete's (Thor Racing) pics of a jap vvti abs ecu (reposted below.) (Hope you dont mind me reposting them Pete) The abs unit is the same as mine but the wiring seems to be to pins 1 and 3 and to pins 8 and 9 of the smaller 12 pin connector That would make the following wiring incorrect. This is what I Connected Wheel Pin no ABS ECU Wire colour Rltc wire colour FR A21 - 3 Red Red FL A21 - 8 White Yellow RR A20 - 10 Blue Blue RL A20 - 22 Purple Green God my head hurts John Quote Link to comment Share on other sites More sharing options...
merckx Posted March 14, 2005 Share Posted March 14, 2005 John, I've just edited this after reading your post properly. There are two connections on each of the two plugs, I jacked up the car this afternoon, spun the wheels and checked them with my multimeter. You were correct the first time. Quote Link to comment Share on other sites More sharing options...
merckx Posted March 14, 2005 Share Posted March 14, 2005 ABS Connections VVTI John, this just confirms what you originally thought about the ABS wires. I've checked with my multimeter and they are correct. http://img212.exs.cx/img212/674/japvvtiabs13tx.jpg http://img212.exs.cx/img212/2817/socket17bj.jpg Small Plug Pin 3 Red wire .......Front Right Wheel Pin 8 White wire......Front Left Wheel Large Plug Pin 10 Blue Wire......Rear Right Wheel Pin 22 Purple Wire....Rear Left Wheel The pins that I've got for the injectors are different though, I've put what I got above what you thought. These are on my Oct 97 VVTI, I would be surprised if they were different on your 98 car. I checked the colours on the Injectors themselves to obtain this. http://img78.exs.cx/img78/5471/98vvtiecupins7gr.jpg Quote Link to comment Share on other sites More sharing options...
jot_ie Posted March 14, 2005 Author Share Posted March 14, 2005 Merckx Thats fantastic . It seems I may have dodgy connections on two of my wheelspeed sensors, or else I have a dodgy rltc box. I got totally confused when I saw Pete's pictures. I looks like all four connections are going to the left hand connector. I will check my connections the next dry evening. Did you get your install and setup finished. How did it go? All working properly without too many other hiccups I hope Enjoy and safe driving. John Quote Link to comment Share on other sites More sharing options...
merckx Posted March 14, 2005 Share Posted March 14, 2005 I haven't got it fitting yet, just wanted to check the wires first. I jacked up each wheel in turn and got someone to spin the wheel, it doesn't have to rotate very quickly at all. No need to have the ignition on. I left the multiplugs plugged in, I grounded one end of the multimeter test leads on a good earth and then probed the other lead into the two plugs to check for the wires. I was getting a reading of about 1400-1500 ohms for each wheels which was fluctuating as the wheel turned. Quote Link to comment Share on other sites More sharing options...
jot_ie Posted March 14, 2005 Author Share Posted March 14, 2005 Many thanks for your hard work. Testing the connections etc. John Quote Link to comment Share on other sites More sharing options...
Ian C Posted March 14, 2005 Share Posted March 14, 2005 That all matches with what I've found out on my 1996 facelift non-vvti Hurrah, I'm just about in the position to wire it all up. Again Another pointer is that the sensor wires on the 12 pin plug go to a heavily shielded section of loom about 4" down from the plug (you'd have to cut away the loom sheathing to find it) and the sensor wires on the 26 pin plug are interwoven together. If we all get out RLTC working I'm gonna poach this thread for a tech article -Ian Quote Link to comment Share on other sites More sharing options...
jot_ie Posted March 14, 2005 Author Share Posted March 14, 2005 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.