Obd Ii Reader Doesn't Link With Vehicle!

[hsz26]

My 1999 GS300 is currently finding problems to start after replacing the engine. Im trying to hook up a OBD II Scanner to see if it shows any codes but its just saying "Unable to connect with vehicle".......Any ideas what it could be, do i need another type of CAN OBD II(if there is one)!!!????

[black 300sport]

As long as you have a OBD11 for europe and your car is not a jap import you should be fine.Try the code reader on another car to see if it works o.k? Like i said before,the only time i have come across this is when a fuse has been blown,have you checked? you can easy blow a fuse putting an engine in.trapped wires ect.Hope this helps

[Rob]

My 1999 GS300 is currently finding problems to start after replacing the engine. Im trying to hook up a OBD II Scanner to see if it shows any codes but its just saying "Unable to connect with vehicle".......Any ideas what it could be, do i need another type of CAN OBD II(if there is one)!!!????

as said check it on another car - i had somth similar but i was using the wrong USB port so had to play around with some settings before it would work

[hsz26]

yeah tried the obd ii reader in my dads car and it worked fine, checked all fuses and there all ok. I even replaced the obd one just in case their was a crack in fuse that wasn't visable. Their is definatly power to the obd port as the reader lights up, just doesnt want to link with vehicle. My lexus is a uk spec. Any other ideas what it could be??

[TigerFish]

still sounds like you have not get everything connected back up. Either that or your ECU has gone belly up.

[black 300sport]

So you have an EOBD11 reader? you can still use a check wire on the plug under the bonnet,i think it is tc and e1(not 100%)if you put a wire between them with the ing turned on the e.m.l will flash to give you codes.

[maneesh]

I had the same issue with my 1999 GS. The code reader worked fine in a 99 IS200, but not on my GS.