AJI Posted January 25, 2002 Share Posted January 25, 2002 Hi people, Ever since I bought my Supra I have been wondering what those two 'diagnostics' boxes do? One of them is in the engine bay and the other in under the steering wheel. Are they both the same connection and are they useful to the driver in any way or is it just some thing that the garages plug in when they do engine checks? Thanx for any replies. AJI Quote Link to comment Share on other sites More sharing options...
Guest Martin F Posted January 25, 2002 Share Posted January 25, 2002 No they are different and very useful when trying to diagnose faults. Quote Link to comment Share on other sites More sharing options...
Phil Wall Posted January 25, 2002 Share Posted January 25, 2002 You can use either to check engine diagnostic codes. (Edited by Phil Wall at 10:59 pm on Jan. 25, 2002) Quote Link to comment Share on other sites More sharing options...
AJI Posted January 26, 2002 Author Share Posted January 26, 2002 Is it something I can check myself? If I bought a laptop could I connect and see if there is anything wrong? (not that there is anything wrong with my car at the moment). also Is it true that you can check what the max speed the vehicle has been taken to, and also the max revs or is that just a load of $hite? Quote Link to comment Share on other sites More sharing options...
Phil Wall Posted January 26, 2002 Share Posted January 26, 2002 No you do not need a laptop. You just need to connect E1 to TE1. Turn on the ignition and count and record the number of blinks made by the the "little engine " symbol. 7 regular blinks mean no fault recorded. Toyota sell a SST 09843-18020 but a piece of wire does the same job. Pulling NO1 EFI fuse will rest the ECU and empty it of codes. The only faults picked up will be from when the car is first started after the fuse is replaced. As far as I know the unit only reports fault codes. (Edited by Phil Wall at 5:50 pm on Jan. 26, 2002) Quote Link to comment Share on other sites More sharing options...
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