Home / Toyota Supra Forums

Go Back   Toyota Supra Forums! Join the Supra forum! > Performance, Modification, and Maintenance Forums - for generation specific discussions > MKIV Supra

Reply
 
Thread Tools Display Modes
Old 11-04-2010, 06:08 PM   #1
JDM Supgra
Stock
 
Join Date: Nov 2010
Location: Canada
Posts: 2
JDM Supgra is on a distinguished road
Default How on earth do you retrieve diagnotics codes on 1994 JDM Surpa?

Hi All,

I got a 94 supra Twinturbo and would like to know how to retreive diagnostic codes from the ECU, I don't see an engine light indicator, however, there is some Triangle looking shape light. I tried jumping TE1 and E1 (if I remember correctly), but did not see any light flashing. I believe the code retrieval on JDM suppra might be different, if any one knows how, please share it with me and if you have a description of the fault codes, please share it with me.

Thank you for your time.

Rafi
JDM Supgra is offline   Reply With Quote
Old 11-07-2010, 04:58 PM   #2
pwpanas
Supra Owner
 
pwpanas's Avatar
 
Join Date: Oct 2005
Location: GA, USA
Posts: 2,209
pwpanas is on a distinguished road
Default

Quote:
Originally Posted by JDM Supgra View Post
Hi All,

I got a 94 supra Twinturbo and would like to know how to retreive diagnostic codes from the ECU, I don't see an engine light indicator, however, there is some Triangle looking shape light. I tried jumping TE1 and E1 (if I remember correctly), but did not see any light flashing. I believe the code retrieval on JDM suppra might be different, if any one knows how, please share it with me and if you have a description of the fault codes, please share it with me.

Thank you for your time.

Rafi
Hi Rafi,

This may help:
http://mkiv.supras.org.nz/
__________________
Phil '94 Supra Turbo, 6spd, 'APU'+
Displacement is no replacement for boost.
Life begins at 30psi.


NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners.
pwpanas is offline   Reply With Quote
Old 11-07-2010, 05:34 PM   #3
JDM Supgra
Stock
 
Join Date: Nov 2010
Location: Canada
Posts: 2
JDM Supgra is on a distinguished road
Default figured out the issue

I found where the engine light is located and noticed it does not turn on nor the oil light comes one when you open the ignition, I took that part of the circuit apart and noticed the solder on the connect pins were cracked, so resoldered them and was able to read the codes and I was getting code 42 which is vehicle speed sensor, so I guess I need to replace it.

Cheers,

Rafi
JDM Supgra is offline   Reply With Quote
Old 11-08-2010, 10:47 AM   #4
pwpanas
Supra Owner
 
pwpanas's Avatar
 
Join Date: Oct 2005
Location: GA, USA
Posts: 2,209
pwpanas is on a distinguished road
Default

Quote:
Originally Posted by JDM Supgra View Post
I found where the engine light is located and noticed it does not turn on nor the oil light comes one when you open the ignition, I took that part of the circuit apart and noticed the solder on the connect pins were cracked, so resoldered them and was able to read the codes and I was getting code 42 which is vehicle speed sensor, so I guess I need to replace it.

Cheers,

Rafi
Thank you for posting back here and keeping us updated. Excellent work on your troubleshooting of why you weren't getting any diagnostic codes.

Regarding your speed sensor, note that the signal actually goes through the odometer. It's possible the odometer panel circuit solder joints need to be re-flowed as well.
__________________
Phil '94 Supra Turbo, 6spd, 'APU'+
Displacement is no replacement for boost.
Life begins at 30psi.


NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners.
pwpanas is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
HELP PLEASE Nick0887 Non-Generation Specific Questions 4 02-28-2009 07:26 AM


All times are GMT. The time now is 10:07 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

1986



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87