Go Back   EcoModder Forum > EcoModding > Instrumentation
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 10-05-2013, 07:12 PM   #1 (permalink)
The brake pedal is evil
 
Join Date: Jan 2013
Location: California__ Awsome: Yes
Posts: 374

Trolla - '94 Geo Prizm base
90 day: 35.82 mpg (US)

Ecomodded prizm - '94 geo Prizm Base
90 day: 37.88 mpg (US)

Dad's Corolla - '89 Toyota Corolla Base.
90 day: 29.51 mpg (US)

Denny's Detector - '08 Mercury Grand Marquis

Project E - '94 Geo Prizm Base
Team Toyota
90 day: 39.69 mpg (US)
Thanks: 4
Thanked 47 Times in 44 Posts
TDCL, Toyota OBD1 diagnostic port reader, poor man's scanguage

I was searching for a pinout for the toyota diagnostic port on my 1994 geo prizm to see if I could get more than just the O2 sensor off of the connector, and I found a tool that might work. primavistalab.com/myengine/ - Translator Down at the bottem of the page is the English version.

I'll test it when I have a chance to build the cable, but it looks promising. Looking at the translated version, the software can show fuel consumption. I know a MPGuino is a better long term solution for a FCD, but this allows me to see what the ECU is seeing so I can find any issues with my car.
EDIT: I found a PDF that outlines behavior in diagnostic mode, it looks like you can setup a micro-controller real easily to read the code.
http://carina-e.ru/download/file.php?id=20531
I found what looks to be the source code for the software, or it might not be, I can't tell, but it has the same results, it looks like what I found can be re skinned for English, gallons, and miles.


EDIT:
Cartester8000 seems to work for reading the data stream. A USB to RS232 dongle off of ebay and a simple cable is all that is needed hardware wise.

OBD-1 Serial Interface - Toyota Wiki

__________________
Getting sensor data off of a pre OBDII Toyota ECU via TDCL.
All of this is on E10: Project E is my current focus.


Last edited by H-Man; 03-31-2016 at 05:08 PM..
  Reply With Quote
The Following User Says Thank You to H-Man For This Useful Post:
Daox (03-31-2016)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 10-08-2013, 01:45 AM   #2 (permalink)
The brake pedal is evil
 
Join Date: Jan 2013
Location: California__ Awsome: Yes
Posts: 374

Trolla - '94 Geo Prizm base
90 day: 35.82 mpg (US)

Ecomodded prizm - '94 geo Prizm Base
90 day: 37.88 mpg (US)

Dad's Corolla - '89 Toyota Corolla Base.
90 day: 29.51 mpg (US)

Denny's Detector - '08 Mercury Grand Marquis

Project E - '94 Geo Prizm Base
Team Toyota
90 day: 39.69 mpg (US)
Thanks: 4
Thanked 47 Times in 44 Posts
Update: It works, I just need to work out issues with the cable to get it to read right.
__________________
Getting sensor data off of a pre OBDII Toyota ECU via TDCL.
All of this is on E10: Project E is my current focus.

  Reply With Quote
Old 10-08-2013, 06:48 PM   #3 (permalink)
EcoModding Lurker
 
Join Date: Jul 2013
Location: Mobile,AL
Posts: 31

Blue-Bomber - '93 Geo Prizm LSi
90 day: 35.15 mpg (US)
Thanks: 3
Thanked 0 Times in 0 Posts
Interesting find. I'll be looking out for more information as I own a 1993 LSi 1.6 w/4spd.
  Reply With Quote
Old 10-08-2013, 08:57 PM   #4 (permalink)
The brake pedal is evil
 
Join Date: Jan 2013
Location: California__ Awsome: Yes
Posts: 374

Trolla - '94 Geo Prizm base
90 day: 35.82 mpg (US)

Ecomodded prizm - '94 geo Prizm Base
90 day: 37.88 mpg (US)

Dad's Corolla - '89 Toyota Corolla Base.
90 day: 29.51 mpg (US)

Denny's Detector - '08 Mercury Grand Marquis

Project E - '94 Geo Prizm Base
Team Toyota
90 day: 39.69 mpg (US)
Thanks: 4
Thanked 47 Times in 44 Posts
V0.1 of my cable was held together with wire nuts and used the sheilding as a capacitor, it didn't work very well because of interference when the engine was running. I'll need to revise the design to get it to work better, but I did get output last night and I got fuel consumption, RPM, timing advance, coolant temperature, feedback state, rich running indication, throttle position, MAP, target air fuel, knock sensor, speed, and IAC duty rate. It refreshes I think every 1.3 seconds, but when trying to find an issue, it still can be of help on our OBDI toyotas. If you have a TE2 pin, you likely have support for this on your car.
V0.2 of my cable will use a twisted pair cable and better pins to connect to the diagnostic connector with. I'll post a video next time I have enough free time to mess with this.
__________________
Getting sensor data off of a pre OBDII Toyota ECU via TDCL.
All of this is on E10: Project E is my current focus.

  Reply With Quote
The Following User Says Thank You to H-Man For This Useful Post:
MobilOne (03-30-2016)
Old 06-20-2014, 07:35 AM   #5 (permalink)
EcoModding Lurker
 
Join Date: Jan 2013
Location: Europe
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Are there any Updates ?
  Reply With Quote
Old 09-01-2014, 05:18 PM   #6 (permalink)
The brake pedal is evil
 
Join Date: Jan 2013
Location: California__ Awsome: Yes
Posts: 374

Trolla - '94 Geo Prizm base
90 day: 35.82 mpg (US)

Ecomodded prizm - '94 geo Prizm Base
90 day: 37.88 mpg (US)

Dad's Corolla - '89 Toyota Corolla Base.
90 day: 29.51 mpg (US)

Denny's Detector - '08 Mercury Grand Marquis

Project E - '94 Geo Prizm Base
Team Toyota
90 day: 39.69 mpg (US)
Thanks: 4
Thanked 47 Times in 44 Posts
I'm trying to figure out why it won't work anymore.

The software is getting a signal, the ECU is sending a signal, but it isn't displaying anymore.

I'll see if I can dig up a windows XP laptop and run it on that or maybe it is the cable I soldered together that is the issue.
__________________
Getting sensor data off of a pre OBDII Toyota ECU via TDCL.
All of this is on E10: Project E is my current focus.

  Reply With Quote
Old 09-01-2014, 06:41 PM   #7 (permalink)
EcoModding Lurker
 
Join Date: Jan 2013
Location: Europe
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
wow thanks for replying, im still hoping i can use this in my toyota starlet from 1991

did u make a video of the old working setup that you could show, i would love to see it
  Reply With Quote
Old 09-01-2014, 07:36 PM   #8 (permalink)
The brake pedal is evil
 
Join Date: Jan 2013
Location: California__ Awsome: Yes
Posts: 374

Trolla - '94 Geo Prizm base
90 day: 35.82 mpg (US)

Ecomodded prizm - '94 geo Prizm Base
90 day: 37.88 mpg (US)

Dad's Corolla - '89 Toyota Corolla Base.
90 day: 29.51 mpg (US)

Denny's Detector - '08 Mercury Grand Marquis

Project E - '94 Geo Prizm Base
Team Toyota
90 day: 39.69 mpg (US)
Thanks: 4
Thanked 47 Times in 44 Posts
No. The setup wasn't that complex anyway, just TE2 jumped to E1, E1 connected to the serial port pin 5, VF1 on serial port pin 6, and a capacitor (1.5nF-3nF) between VF1 and E1.

OBD-1 Serial Interface - Toyota Wiki
__________________
Getting sensor data off of a pre OBDII Toyota ECU via TDCL.
All of this is on E10: Project E is my current focus.

  Reply With Quote
Old 08-21-2015, 03:19 AM   #9 (permalink)
The brake pedal is evil
 
Join Date: Jan 2013
Location: California__ Awsome: Yes
Posts: 374

Trolla - '94 Geo Prizm base
90 day: 35.82 mpg (US)

Ecomodded prizm - '94 geo Prizm Base
90 day: 37.88 mpg (US)

Dad's Corolla - '89 Toyota Corolla Base.
90 day: 29.51 mpg (US)

Denny's Detector - '08 Mercury Grand Marquis

Project E - '94 Geo Prizm Base
Team Toyota
90 day: 39.69 mpg (US)
Thanks: 4
Thanked 47 Times in 44 Posts
Update: This works.



I used the cheapest USB to RS-232 dongle I could find on ebay and really short wires leading up to the RS232 dongle.
__________________
Getting sensor data off of a pre OBDII Toyota ECU via TDCL.
All of this is on E10: Project E is my current focus.


Last edited by H-Man; 08-21-2015 at 03:36 AM..
  Reply With Quote
Old 09-07-2015, 12:46 PM   #10 (permalink)
EcoModding Lurker
 
Join Date: Jan 2013
Location: Europe
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
I'm still following this, so looking forward to see a good result from you

  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com