how to do a diagnostic

[89whitedevil]

hey im impressed you really do you homework i think your the first person i have seen in a while that has this much info on this old of a car (i am a mechanic as my profession) and i work on brand new cars there much less complex than the older import cars it is hard to find info on alot of this stuff like codes wiring schematics ect. but just for info sake i have acsess to all of that so if anyone need this info let me know i also have diagnoistic procedures too i can post them really easily....

[dannydavi]

hey first off i really wanted to say this is an awesome technique, thanks for sharing. Second i got an error code 14: which is with ignition signal, diagnosis is no IGF signal to ECU... then it says "A" 7M-GE 6-8 which i dont understand, trouble area: ignition and ignition coil circuit, igniter and ignition coil, ECU. I also got trouble code 21: which is either oxygen sensor signal or oxygen sensor heater signal, So basically what im asking is can someone help me understand my trouble codes, and perhaps lead me in the right direction to eliminate my trouble codes, thank you.

[linuxgurupodboy]

I wanted a fast car, one with heaps of ponies, I could'nt buy a 300zx, my brother in law has one. So I went one better, I got myself a 1989 3ltr turbo supra (completely stock, still has original air filter). Made him envious, as you can well imagine.

To get to the point, I'm wanting to bridge my laptop to the engine management (diagnostics). Is this possible? If so where is the interface port (PLUG)?

[supraboy380]

i tested my car and got codes 12 13 and 14, does anyone know how to fix them? i already looked them up, and i think its my throttle sensor but i don't know howto fix it. i think thats whats causing my car to cut-out at like 2500 rpm, but idk