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#1 Old 10-31-2006, 10:41 PM
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how to retrieve ECU codes?

How do you retrieve ECU codes on my 91 toyota pickup 4x4 3.0L?
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#2 Old 10-31-2006, 10:49 PM
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right next to your battery you'll see a diagnostic box, open that and take a small paper clip to connect the e1 to Te1 terminal, turn key on and count the flashes
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#3 Old 11-01-2006, 06:51 AM
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Thanks, Is there a list somewhere that explain the codes?
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#4 Old 11-01-2006, 07:34 AM
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There is a list and you should be able to find it under the FAQ sticky at the top of this Forum's page. "Engine codes" is part of the title. In that thread there should be an explanation of how to get the codes from different year trucks and a list as to what they mean. Let us know if there is something you can not find there.

Good luck.

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#5 Old 11-01-2006, 07:50 AM
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Quote:
Originally Posted by maxpower_hd
Let us know if there is something you can not find there.
Thank you very much sir
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#6 Old 11-01-2006, 08:06 AM
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my check engine flashes constantly when I jumper e1 and Te1 ? is this normal. I counted up to 120 and it never stopped lol
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#7 Old 11-01-2006, 10:54 AM
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That usually means you have no codes stored. I call it the everything's OK alarm.

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#8 Old 11-01-2006, 02:49 PM
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great after much reading I found that it was the all normal code, thanks for the confirmation.

Thanks everyone for your help.
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#9 Old 11-01-2006, 03:09 PM
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About half of the ECU codes stored on the first & second generation EFI Toyotas don't show a constant blinking check engine light therefore you must pull the ECU codes to see if a fault is registered.

To pull the ECU codes:

All 1980-1995 and including 1995 EFI equipped vehicle allow you to find engine and related faults by pulling the ECU (computer) codes without the need for a handheld OBDII diagnosis scanner,the sites listed below have the fault codes needed to pull the codes and the instructions on how to do it:

http://autorepair.about.com/library/...bl-dtcs-36.htm
http://autorepair.about.com/library/...bl-dtcs-53.htm
http://autorepair.about.com/library/...bl-dtcs-71.htm
http://autorepair.about.com/library/...bl-dtcs-90.htm
http://www.off-road.com/toyota/tech/codes/index.html
http://lcengineering.com/TechNotes/TechNote12.htm
http://lcengineering.com/TechNotes/TechNote13.htm
http://www.geocities.com/MotorCity/P...ct/Engine.html
http://www.mad-mechanic.com/toyota/t...tml#obtaincode
http://www.freewebs.com/th3duke/22RE-ECU.mht
http://www.troublecodes.net/Toyota
http://www.autoshop101.com/forms/h27.pdf
http://www.showmesome.info/hilux/inf...E/Page0096.htm
http://www.efisakh.narod.ru/at_toyota.htm (auto tranny codes)
http://www.usatransdoctor.com/foreigntoyota.htm

Pulling the ECU (EFI computer) codes is the first thing I do to diagnosis a problem thereafter I reset the ECU to see if the same problems show up and if so I then take voltage measurements both with the engine running and not and compare with the factory service manual,I also close the ignition switch after a cold engine and also after a warm engine and compare them with the factory service manual.This technique will completely isolate your problem without having to do trial and error and it is the technique I use when repairing tv's,vcr's,home/car audio.

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#10 Old 06-03-2010, 03:43 PM
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So i tried the jumping the terminals thing and i think i got it right but not too sure...so i jumped them and turned on the ignition and it just kept doing the II and then I and it just kept repeating in that order...i know my oxygen sensor is MIA and a 21 is for oxygen sensor so does it just keep blinking with the same code if there is only one issue or does the continuous blinking mean its also throwing other codes... but like i said its just the II and then I so i dont know maybe someone could explain it a little better for my or maybe im just reading over something and missing it but i have read the instructions over a few times...so any help would be appreciated...thank
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#11 Old 06-03-2010, 04:04 PM
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It till keep repeating the same code over and over again.

1991 Pickup - 3vze - 4x4 - SR5 - 5sp- 270k.
Currently in street DD mode

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#12 Old 06-03-2010, 04:13 PM
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I kinda of figured as much but i figured i would ask someone more in the know ya know
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#13 Old 06-03-2010, 06:17 PM
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For sure

1991 Pickup - 3vze - 4x4 - SR5 - 5sp- 270k.
Currently in street DD mode

www.cardomain.com/ride/2572486
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#14 Old 09-11-2013, 08:24 PM
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Help figuring ecu codes

My 1992 pickup is showing check engine light. I jumped between the terminals to get the codes and this is what I got. 2 flashes then paused 1 then pause 2 then pause 4 then pause 3 then pause 1 then pause 3 then pause 2 then pauses for awhile then repeats the previous again. I cant match them to anything I have found. Can anyone PLEASE help. I am in hopes this will shed some light on the main problem I have which is truck might run 1 day and not start the next. I have replaced all fuel relays and fuel pump still haven't found what is wrong. I do know once it stops running I have checked power to the fuel pump and it is not getting power. Any help would be AWSOME
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#15 Old 09-12-2013, 08:02 AM
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Quote:
Originally Posted by Rock-Crawler1 View Post
My 1992 pickup is showing check engine light. I jumped between the terminals to get the codes and this is what I got. 2 flashes then paused 1 then pause 2 then pause 4 then pause 3 then pause 1 then pause 3 then pause 2 then pauses for awhile then repeats the previous again. I cant match them to anything I have found. Can anyone PLEASE help. I am in hopes this will shed some light on the main problem I have which is truck might run 1 day and not start the next. I have replaced all fuel relays and fuel pump still haven't found what is wrong. I do know once it stops running I have checked power to the fuel pump and it is not getting power. Any help would be AWSOME
So you'd have code 21, 24, 31, 32. it's just the numbers in order. 21 is O2 sensor, 24 is the IAT in the AFM, 31 and 32 are both for the AFM (faults in different circuits). If the AFM or any of it's several circuits are bad, you won't get power to the fuel pump nor will the engine run. Either the AFM circuit board is bad or the wiring is damaged. The O2 sensor code you can worry about later, it won't prevent the truck from running.

If the engine isn't running and the key isn't in "start" you won't have power to the fuel pump. you can short B+ ot Fp in the diagnostics connector to bypass the relay or unbold the AFM and hold the door open while the key is in "run"

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