How to pull ECU codes from a 1g with a voltage ohms multimeter?

[Simadowna119]

i have a 90 lasor rs turbo.... i bought an 12v electric buzzer but it is for something else i think. i cant get it to buzz..... but i do have a voltage ohms multimeter and i heard that there is a way to pull ECU codes with it.... does anybody know how to do this or know a link to the instructions?

 

[1stGenTSi]

ECU Code Checking

 

[Simadowna119]

it says in order to use a anolog volt multimeter(wich i have) you just count the pulses displayed....
but i dont understand... has anyone do this before?..... whe i try and displays 10.6 over and over but then it will just jump the numbers around too ....

basicly does anybody have a manual that says how to do it that they can tell me because it says how to do it in the manual but i dont have the money right now to go buy one for myself..

thanks...

 

[AlaskanDsm]

Don't worry about reading the voltage. All you have to do is read the "sweeps" or when the needle jumps across the meter. When the needle makes a "long sweep" or "slow sweep", that means a double digit number such as 3_ if it makes 3 sweeps. Then it makes a "short sweep" or "quick sweep". These are the single digits such as _3 if it makes 3 quick sweeps. So together the code would be 33. Then you would comapre to a chart of codes.

After one code is completed, if there is a second code it will provide that one before repeating. They are produced in numerical order.

 

[Defiant]

it says in order to use a anolog volt multimeter(wich i have) you just count the pulses displayed....
but i dont understand... has anyone do this before?..... whe i try and displays 10.6 over and over but then it will just jump the numbers around too ....

Sounds like you have a digital, not an analog. Analog means one with a sweep needle, not numbers.

You can also just use a test light.

 

[99rtguy]

digital multimeter is best. set for like 10 second read, you can get like 3 or 4 codes at a time. weve got one at work and it works well for that.

 

[Simadowna119]

yes sorry i just figured out yesterday that i have a digital.... not one with a needle..


can someone please explain how to do it with a digital multimeter?...it would be greatly appreciated, thanks

 

[99rtguy]

put the positive lead n the signal pin of connector and the ground lead on the ground of the connector. then read the waves. long wave is first number of the code, short wave is second of could. if you can adjust the view time, put it longer than 5 seconds. 10 is what i set mine at.

 

[deerhunter0881]

All you need is some wire and led bulb,alligator clips and count the number of blinks, I will look for the directions on how to read the blinks.

http://www.dsm.org/archives/1998/09/...07.txt/23.html this is the site under 5 dollars. This is how i did it and I made it permanent so if a code ever comes up again I just look at the LED light and count the blinks

 

[AlaskanDsm]

ECU Code Checking

Someone already has the checking posted from before.

As far as the LED checker... thats not too bad of an idea.
(btw the link didn't work for me)

 

[Simadowna119]

ECU Code Checking <--- this link doesnt explain how to do it with an LED light counting blinks...

and that other link up there sounds like the one i need but the link didnt work... so i guess ill search for this..... does anybody here know how to count the blinks???


i have everything here already that i need to do it

 

[flying_eagle]

Wal mart has an anolag meter for 10 dollars and a chiltons manual has the details for it. the needle will make sweeps back and forth long ones and short ones in the chiltons has a detailed page of codes its the simplest way to do it and i've done it a lot so if you need help just ask

 

[deerhunter0881]

go to tech in dsmtuners then FAQ'S then search pulling codes then its go in the first thread that comes up and the web site. when you get there it will work sorry dont know why it did not work

 

[AlaskanDsm]

ECU Code Checking <--- this link doesnt explain how to do it with an LED light counting blinks...

and that other link up there sounds like the one i need but the link didnt work... so i guess ill search for this..... does anybody here know how to count the blinks???


i have everything here already that i need to do it

LED

As far as testing goes... it's going to be the same as the needle tester but instead going to be long flash and short flash.

 

[Simadowna119]

i have a extra brake light.... could i just use that?

 

[steve]

Incandescent lights draw too much current and can damage the ECU. Use a LED or Piezo buzzer if you don't have an analog volt meter. Or build a logger cable.

 

[DSM1G90]

Had a CEL the other day - pulled out my little meter, stuck the leads where it shows in either the Chiltons or the VFAQ pix description and the list of pulse codes (I also cheated and got small alligator clips that I can attach to the lead tips which the alligators can keep locked on the pins in that connector so this test can be hands free), set the voltage to 15vdc, turn the key to "on" and counted the needle swings ..

three longs and one short .. "dang it! .. My Knock sensor is going kaput on me."


..ordered a new one - I wonder why my car at certain times just didn't have the 'spunk' as it should be....

Knock sensor is retarding my timing.

-DSM