How to check diagnostic codes

[suprra_girl]

jumper with a piece of wire t & e1 in diag box in the engine bay, jump in car, turn key to ign and count the codes from engine check light

example code

21

flash flash... flash

34
flash flash flash... flash flash flash flash

2 codes stored

14 & 52

flash...flash flash flash flash............. flash flash flash flash flash... flash flash

now go here and find out what your code means

http://www.cygnusx1.net/supra/library/TSRM.../fi/FI_026.html


Check this page for instructions also
http://www.cygnusx1.net/Supra/TechTi...ror_codes.aspx

(eddited by Green7mgte)

[corewitz]

will just like a paper clip work? I tryed that and the engine light is just on always and never blinks. Also there is a lot of white gunk in the diag. box, would that have anything to do with it?

[suprra_girl]

yep... ppl have used paper clips

that white gunk is used to keep the terminals in good health i believe

[lifesnotfair]

Thanks, supra girl. I have no idea what "t" and "e1" mean, but I will try to search for this tomorrow.

My hood shocks are "tired", so I hate to look under my hood coz I need one arm to keep it up, or a stick, which I never keep around =P

[suprra_girl]

hehe good luck with ya codes

look in engine bay
locate fusebox
beside fusebox = another box with diagnostic written on it
inside diag box on lid you will see pin diagram
find T & E1 (also known as TE1 & E1) on the lid then match up with diag pins and put wire or paper clip into those to connect them together and walah... your cel will flash or do something

[suprra_girl]

sounds like code 52 which is knock sensor, check to make sure your plugs aren't broken and that (if turbo) both are plugged in (if na) that "the" knock sensor is plugged in

get a piece of wire and you should have to open the lid on the diagnostic box, inside the lid is a diagram of what each pin is, there you should find where te1 and e1 is

if ever you do a diagnostic and you have put the wire in but your check engine light stays lit and doesn't blink thats because the wire has not made firm connection in both of the terminals

[Monkey]

Originally Posted by suprra_girl

yep... ppl have used paper clips

that white gunk is used to keep the terminals in good health i believe

That white gunk is waterproofing/dielectric grease that helps keep water out of electrical connections, and it also helps to promote electrical conductivity.

[red_armie_soviet]

I got 3 diff codes and they all seem to be electric, i got codes 24, 32, and 41, and im having a really hard time fixing them.

[cre]

Originally Posted by gfrererr13

Will this work the same for a MKIV Supra as well? or is there anything different that needs to be done? Thanks!

I would like to know what years this works for as well, I know it works for all MKIII, I don't know about the MKII or MKIV.

Anyone?

[suprra_girl]

Typically will be the same for all toyotas 86-95ish

Some MK2's apparently have some sort of diagnosis system but I'm not sure which ones exactly, it's apparently a 2pin plug with a cap on it that you short.