how to do a diagnostic - Page 4

89whitedevil · 01-01-2007, 10:24 PM

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 · 03-31-2007, 12:10 AM

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 · 05-10-2007, 09:22 AM

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 · 05-28-2007, 10:03 PM

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

okinawasupra · 04-11-2009, 02:55 AM

great info thanks!

gfrererr13 · 07-09-2009, 09:10 PM

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

red_armie_soviet · 09-09-2009, 09:13 PM

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 · 01-07-2010, 12:32 AM

Quote:

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 · 01-07-2010, 12:44 AM

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.

90MarkIII · 12-05-2011, 02:55 PM

This is a great forum/thread! I read through the previous 4 pages and didnt see anything on code 26 on 1990 turbo supra, and this code is not in the manual. Just bought the car a month ago and have been restoring it to stock. Everything has been going well until it started intermittently started cutting of all power under heavy acceleration. It always havens from about 3000you rpm and up. Anyone ever had a problem with this code?

01-01-2007, 10:24 PM	#31
89whitedevil Intake Join Date: Dec 2006 Location: nowhere Posts: 38	wow supra girl!!! 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....

03-31-2007, 12:10 AM	#32
dannydavi 12psi boost Join Date: Mar 2007 Location: Sacramento, Ca Posts: 373	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. __________________ '86.5 Supra - A/T - N/A - JDM Useful Sites: ToyoDIY.com ToyotaPart.com MKIIITSRM

05-10-2007, 09:22 AM	#33
linuxgurupodboy Intake Join Date: May 2007 Location: New Zealand Posts: 30	Computerised Diagnostics 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)?

07-09-2009, 09:10 PM	#36
gfrererr13 Stock Join Date: Jul 2009 Location: Alberta, Canada Posts: 1	Diagnostics Will this work the same for a MKIV Supra as well? or is there anything different that needs to be done? Thanks!

01-07-2010, 12:44 AM	#39
suprra_girl 7M POWAH! ;) Join Date: Jun 2004 Location: New Zealand Posts: 2,312	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. __________________ Please use the forum to ask your questions as they will get replied to much faster than pming me Pics of my build. "Good girls are just bad girls that don't get caught" Do a diagnostic first!

05-28-2007, 10:03 PM	#34
supraboy380 Stock Join Date: Aug 2006 Location: yacolt, washington Posts: 26	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

04-11-2009, 02:55 AM	#35
okinawasupra Stock Join Date: Apr 2009 Location: okinawa japan Posts: 4	great info thanks!

09-09-2009, 09:13 PM	#37
red_armie_soviet Stock Join Date: Sep 2007 Location: chicago Posts: 7	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.

12-05-2011, 02:55 PM	#40
90MarkIII Stock Join Date: Dec 2011 Location: Sarasota, FL Posts: 1	MKIII trouble code 26 This is a great forum/thread! I read through the previous 4 pages and didnt see anything on code 26 on 1990 turbo supra, and this code is not in the manual. Just bought the car a month ago and have been restoring it to stock. Everything has been going well until it started intermittently started cutting of all power under heavy acceleration. It always havens from about 3000you rpm and up. Anyone ever had a problem with this code?

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