leeg Posted July 4, 2013 Share Posted July 4, 2013 Hi does anyone know what diagnostics tool can be used on a vvti import? As I have read that although it is an obd2 plug, it's jobd software, so finding the right tool can be tricky. Thanks Quote Link to comment Share on other sites More sharing options...
Benjy Posted July 4, 2013 Share Posted July 4, 2013 What year mate? Quote Link to comment Share on other sites More sharing options...
chrispot Posted July 4, 2013 Share Posted July 4, 2013 Hi does anyone know what diagnostics tool can be used on a vvti import? As I have read that although it is an obd2 plug, it's jobd software, so finding the right tool can be tricky. Thanks do you have an android phone? if yes then the cheapest option is to buy a Bluetooth obd adaptor and get the torque app, there is a post on this site someone put up about it, so that's what I have done and it works great. I also brought a obd scan tool from ebay that works with the supra but only gives fault codes. the torque app does so much more. have a search for it. regards chris Quote Link to comment Share on other sites More sharing options...
leeg Posted July 4, 2013 Author Share Posted July 4, 2013 What year mate? It's a 98 Quote Link to comment Share on other sites More sharing options...
leeg Posted July 4, 2013 Author Share Posted July 4, 2013 do you have an android phone? if yes then the cheapest option is to buy a Bluetooth obd adaptor and get the torque app, there is a post on this site someone put up about it, so that's what I have done and it works great. I also brought a obd scan tool from ebay that works with the supra but only gives fault codes. the torque app does so much more. have a search for it. regards chris Ok cheers will have a look for that, what is the name of the tool you got? Thanks. Quote Link to comment Share on other sites More sharing options...
chrispot Posted July 4, 2013 Share Posted July 4, 2013 the tool that I got was a Maxidiag made by autel, when I got mine from ebay the seller gave me the software for other makes of car, normally they come with one lot of software for jap, euro, german, French, etc. why do you need a obd tool? what's wrong with your supra, if anything . Quote Link to comment Share on other sites More sharing options...
leeg Posted July 4, 2013 Author Share Posted July 4, 2013 Well when warmed up, it goes into limp mode, that's one problem so that could possibly be a lambda sensor as the car took a hard knock just after the front wheels. And another problem, my brothers mate who is a 'mechanic' had a look at my car as it was losing oil and found out the rear turbo has gone, (with the aid of a camera) but he seems to think he can plug a diagnostic tool in to possibly find the cause of the oil leak? I no too sure on that one though? the turbos are getting refurbed so I need to know for that reason. Quote Link to comment Share on other sites More sharing options...
bignum Posted July 4, 2013 Share Posted July 4, 2013 Now that would be clever diagtool to find an oil leak:) Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted July 4, 2013 Share Posted July 4, 2013 Now that would be clever diagtool to find an oil leak:) Yes they would be a big seller. Quote Link to comment Share on other sites More sharing options...
chrispot Posted July 4, 2013 Share Posted July 4, 2013 sorry to ask this but when you say limp mode do you mean limp mode or snow mode? when its in limp mode is the red warning light on, and do you lose the dbw throttle ( lots of pedal travel). I could disconnect my o2 sensor and warm the car up and see if mine goes into limp mode, that way you would know if that's your problem? I can not see a way that you could diagnose a oil leak through the obd port, my obd tester does not show freeze frame data, oil pressure, manifold pressure, on the supra other cars that i have test it does. could you ask him how? Quote Link to comment Share on other sites More sharing options...
leeg Posted July 4, 2013 Author Share Posted July 4, 2013 Now that would be clever diagtool to find an oil leak:) well don't forget hes a 'mechanic' some sort of super mechanic lol Quote Link to comment Share on other sites More sharing options...
leeg Posted July 4, 2013 Author Share Posted July 4, 2013 sorry to ask this but when you say limp mode do you mean limp mode or snow mode? when its in limp mode is the red warning light on, and do you lose the dbw throttle ( lots of pedal travel). I could disconnect my o2 sensor and warm the car up and see if mine goes into limp mode, that way you would know if that's your problem? I can not see a way that you could diagnose a oil leak through the obd port, my obd tester does not show freeze frame data, oil pressure, manifold pressure, on the supra other cars that i have test it does. could you ask him how? yeah definitely limp mode, with the warning light on, and yes also loses throttle, gives me a little bit but no more. yeah if you could do that that would be great thanks, I was driving it for about half an hour then it happened? I went to stick my foot down a bit and then that happened, possibly something to do with the turbo being knackered? also think I need to find another mechanic because I don't think you can diagnose an oil leak like that any help would be much appreciated Quote Link to comment Share on other sites More sharing options...
chrispot Posted July 5, 2013 Share Posted July 5, 2013 took my car out today and warmed it up then disconnected the 02 sensor then drove home and it didn't go into limp mode all that happened was my afr was reading higher about 12.7 instead of the normal 14.5. Also disconnected the oil control valve for the vvti, that didn't put it into limp mode, I did have it go into limp mode some time back once whilst I was driving, what I did was checked and cleaned the connectors to the throttle body, and it's never happened again, you could try that. if I get time tomorrow I will try disconnecting the maf sensor and see if that puts it into limp. It has nothing to do with the turbo. if you do find the answer please lets us know. regards chris Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 5, 2013 Share Posted July 5, 2013 Probably a drive by wire fault. My scan tool does VVTi's but I can't remember the make. To be honest I don't use it much. Quote Link to comment Share on other sites More sharing options...
leeg Posted July 6, 2013 Author Share Posted July 6, 2013 Okay I ordered a diag tool and it turned up today, plugged it in and turns out the tps is not reading correctly. I have never adjusted that before but perhaps that knock I had has moved it out of position. Have you ever had experience with that and if so, how do I adjust it to the correct position? Thanks a lot for trying all those things mate, really appreciate it, sorry to waste your time aswel. Cheers Quote Link to comment Share on other sites More sharing options...
chrispot Posted July 6, 2013 Share Posted July 6, 2013 what diagnostic tool did you get in the end, and what did the diagnostic tool report? when you say the tps is not reading correctly, how? is it reading low/ high/ intermittent/ erratic etc. I don't know if the tps is adjustable,(I would have thought so) if it is could be just a simple job. It may need new tps pots etc if the signal is erratic (might be able to just clean). if you have a analog voltmeter you could use that to see if the throttle pot is dirty? I will look through the information I have on vvti supras and report back and I could if needed measure my throttle pots and tell you what voltages I have got when engine cold, hot, running at idle etc so you could set yours to that if possible? regards chris Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 6, 2013 Share Posted July 6, 2013 All the set up info is in the factory shop manual. A £5 multimeter off Ebay and a few hours will sort the correct set up. Quote Link to comment Share on other sites More sharing options...
chrispot Posted July 7, 2013 Share Posted July 7, 2013 All the set up info is in the factory shop manual. A £5 multimeter off Ebay and a few hours will sort the correct set up. where can i get the factory shop manual? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 7, 2013 Share Posted July 7, 2013 I bought one of the set from Toyota and the rest from a member who sadly is no longer with us, but I think you can download them. You need the engine manual. Quote Link to comment Share on other sites More sharing options...
leeg Posted July 7, 2013 Author Share Posted July 7, 2013 I got the 'obdmate' tool, not too bad does jobd and eobd, obd with an obd2 plug, for 1996 onwards just for japenese car makes. one report was the throttle was out of range and another report said that the throttle was out of position. sounds like the same fault to me? I checked the tps terminals for ohms and it was reading 0.930 with the throttle fully closed and 1.123 with the throttle fully opened. and I think its supposed to be reading 0 ohms when closed. I did adjust it on the little amount of slot you can with it but the reading was still 0.834 it the very best. So it sounds like a new tps is in order I think. need to phone Toyotas tomorrow because the only ones I can find are all overseas and want silly money for shipping and taxes. anyone know anywhere to get one over here? when you type the part number in google it seems to show yaris and prius versions? cheers, lee Quote Link to comment Share on other sites More sharing options...
chrispot Posted July 8, 2013 Share Posted July 8, 2013 just to let you know there are 2 throttle pots on the vvti and they are used for the drive by wire system. I don't know what the resistance valves are but when I was fitting my throttle controller and doing a voltage check one only went from about .5v to 3v and the other went from about .5v to 4.5v, they use two pots as part of a safety system for the dbw, also the .5v-3v one had little change for the movement if you see what I mean (probably a logarithmic pot) and the other had a nice sweep (linear). so before ordering new do a few more checks with the multiplug connected on the throttle body and check at the ecu terminals that way you check the pots and wiring at the same time. do you have a wiring diagram for the vvti system? if not I can email to you if needed. good luck and regards chris. Quote Link to comment Share on other sites More sharing options...
leeg Posted July 8, 2013 Author Share Posted July 8, 2013 Ok thanks for all the info, yeah I could do with a set of wiring diagrams if possible that would be great, will also check voltages aswel as ohms. Also do you know where to get hold of a repair manual for the vvti at all? Cheers Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 8, 2013 Share Posted July 8, 2013 If you find a factory VVTi manual, even in Japanese, I would be interested in buying one. AFAIK there isn't one in the UK, or available on line. Quote Link to comment Share on other sites More sharing options...
chrispot Posted July 8, 2013 Share Posted July 8, 2013 Ok thanks for all the info, yeah I could do with a set of wiring diagrams if possible that would be great, will also check voltages aswel as ohms. Also do you know where to get hold of a repair manual for the vvti at all? Cheers I have looked online and not found any repair manuals on the vvti supra, did find some other bits and pieces that I posted on here about the vvti wiring diagram, if I can find them I will post link for you found it link is http://wilbo666.pbworks.com/w/page/57949268/2JZ-GTE%20VVTi%20JZA80%20Supra%20Engine%20Wiring this will help in what wires to prob, but regarding voltages/ resistances etc I don't have. when you cure the fault please let us know what the problem is/was, as this will help others who have problems in the future. regards chris Quote Link to comment Share on other sites More sharing options...
chrispot Posted July 8, 2013 Share Posted July 8, 2013 If you find a factory VVTi manual, even in Japanese, I would be interested in buying one. AFAIK there isn't one in the UK, or available on line. I thought you said earlier that you had a set of manuals? or are they for the "normal" supras that you have got and not the vvti?. if I do find any info out I will about the vvti (from Toyota) I will inform you. regards chris. ps. what a great name you have. Quote Link to comment Share on other sites More sharing options...
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