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91 toyota need to read codes


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dusto74
User

Apr 28, 2011, 5:51 AM

Post #1 of 16 (3009 views)
91 toyota need to read codes Sign In

i have a 91 toyota previa van and i need to now how to read the codes on it not sure if i need a tester or if theres another way ''thanks


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Apr 28, 2011, 6:02 AM

Post #2 of 16 (3002 views)
Re: 91 toyota need to read codes Sign In

You can get the check engine light to flash codes by jumping the diagnostic connector as shown.





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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



dusto74
User

Apr 28, 2011, 4:39 PM

Post #3 of 16 (2989 views)
Re: 91 toyota need to read codes Sign In

is that under the hood ?


Hammer Time
Ultimate Carjunky / Moderator
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Apr 28, 2011, 4:46 PM

Post #4 of 16 (2986 views)
Re: 91 toyota need to read codes Sign In

Not likely. That is the parking brake lever in the picture.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



dusto74
User

Apr 28, 2011, 5:48 PM

Post #5 of 16 (2979 views)
Re: 91 toyota need to read codes Sign In

lol. yea sorry i forgot about that i just got this van used to another set up but i did find it and got it to blink but the oil lite blinks with it some times what does that mean ? is that to seperate the codes ?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Apr 28, 2011, 5:49 PM

Post #6 of 16 (2974 views)
Re: 91 toyota need to read codes Sign In

I have no idea.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Tom Greenleaf
Ultimate Carjunky / Moderator
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Apr 28, 2011, 5:55 PM

Post #7 of 16 (2969 views)
Re: 91 toyota need to read codes Sign In

Dusto: What is wrong that you want codes in the first place? '91 wasn't very comprehensive with info with codes IMO with anything and I to have no idea why an oil light blinks also?

T



dusto74
User

Apr 28, 2011, 5:59 PM

Post #8 of 16 (2964 views)
Re: 91 toyota need to read codes Sign In

just got this van and wanna make sure it is nothing thats going to blow out on the road i really just wanna cheak everything over but it does seem ok right now


Mr.scotty
Enthusiast
Mr.scotty profile image

Apr 28, 2011, 6:04 PM

Post #9 of 16 (2962 views)
Re: 91 toyota need to read codes Sign In

A blinking oil light?
Does it blink all the time?
Or does it just blink while brakeing or taking off from a stop, or going around a corner?
Did you check your oil level?
The oil pressure switch could be bad or just have a bad connection.
Hope this helped.
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Your only as good as your tools!


dusto74
User

Apr 28, 2011, 6:04 PM

Post #10 of 16 (2962 views)
Re: 91 toyota need to read codes Sign In

its ok ill just do it the old way and wait for signs of anything


dusto74
User

Apr 28, 2011, 6:06 PM

Post #11 of 16 (2959 views)
Re: 91 toyota need to read codes Sign In

no it blinks when im cheacking the codes


dusto74
User

Apr 28, 2011, 6:12 PM

Post #12 of 16 (2958 views)
Re: 91 toyota need to read codes Sign In

thank you for your help


Mr.scotty
Enthusiast
Mr.scotty profile image

Apr 28, 2011, 6:15 PM

Post #13 of 16 (2955 views)
Re: 91 toyota need to read codes Sign In

HHmm..., strange.
Are you sure you have the jumper wire in the rite pins?
--------------------------------------------------------

Your only as good as your tools!


Tom Greenleaf
Ultimate Carjunky / Moderator
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Apr 28, 2011, 6:46 PM

Post #14 of 16 (2950 views)
Re: 91 toyota need to read codes Sign In

Quote from Dusto">>just got this van and wanna make sure it is nothing that's going to blow out on the road i really just wanna check everything over but it does seem ok right now<<"

I suggest stop if all is well as you can't predict by a car's computer from '91 if something is going to go wrong. Hit the wrong pins and you make a problem you didn't have! Just maintain it, check fluids, and the normal things if nothing is wrong with it now,

T



(This post was edited by Tom Greenleaf on Apr 28, 2011, 6:52 PM)


Mr.scotty
Enthusiast
Mr.scotty profile image

Apr 28, 2011, 7:19 PM

Post #15 of 16 (2940 views)
Re: 91 toyota need to read codes Sign In

Maybe at some point between 91 and now some had the dash cluster out of and and has the bulb socket for the CEL on the Oil pressure lights place.
So it might actually be the CEL but it's show Oil pressure cause it's in the wronge place, I know it sounds odd but stranger things have happened.
Unhook the oil pressure switch and see if another light besides the oil light comes on, if so then the bulb is in the wrong place.
--------------------------------------------------------

Your only as good as your tools!


Tom Greenleaf
Ultimate Carjunky / Moderator
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Apr 29, 2011, 9:49 AM

Post #16 of 16 (2933 views)
Re: 91 toyota need to read codes Sign In

If a mistake like that happened it would mess up. Most cars they all light up with key on engine off and others while cranking as a bulb check then all should go out.

Dash having been out isn't necessarily unusual for the age of it. A couple repairs like even a heater core could require that - dunno myself car by car just that some you must.

I'm not sure if unplugging or grounding an oil pressure switch will defeat it or make it stay on but it's worth a test and get them back where they belong. If just a low pressure, usually red warning those mean biz and a problem lurks that mean shut down right now or could be game over for the engine fast - seconds if it has no oil pressure.

Now tons of vehicles say "check oil" and folks for decades on end when they were just "idiot" lights thought it meant time to check the oil when I get around to it!

An idiot oil light will come on if low enough on oil or say below 15-20 psi of oil pressure and of course if there isn't enough or any it can't make pressure.

They should have designed a shock thru the seat instead - laugh! Well for me anyway as I don't scan gauges or lights unless they are really well placed and some aren't.

IDK about finding the right spot. Try you trick and see. That or take oil pressure switch right out and properly plug the hole of course and see which one glows while attached to the oil pressure switch which may need threads grounded for something like that.

Good luck with the fix and again if it's running well and no lights are on I wouldn't look try to check for codes "just because" type of thing. If it ain't broke - don't fix it would apply,

T







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