How To Pull Fault Codes On A 1990 Mitsubishi Montero - Mitsubishi Motero Check Engine Light Repair
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- เผยแพร่เมื่อ 8 ก.พ. 2025
- This video outlines the process of accessing fault codes stored in the ECM of early 90's Mitsubishi Montero vehicles that have an illuminated check engine lights. Fault codes can indicate a possible problem in a computer control system and give important information about related systems and a beginning point for diagnosis. This procedure involves the use of a volt meter instead of an expensive proprietary scan tool. Please watch this video for more helpful information. Thanks for watching!
Thank you for the information. You have just helped me immensely with my 91 Montero.
I do not have one of these vehicles and hope I never have to work on one but I love these tips! keep up the great work Tim.
+The Disgruntled Mechanic Thank you sir!
This video helped me with my 89 Raider! I appreciate you immensely!
Thank you! Working on an '89 Dodge Raider (Same vehicle as your Mitsubishi).
Hi Tim ,Nice video.I do remember those older cars and trucks they were a rear pain in the a-s to get the codes.Lol
You're the man. I needed to check my 1989 Dodge Raider (same as a Montero) and the Haynes manual had me looking for this connector behind the friggin radio. I did have to pull the glovebox door though but it was still behind and up there.
Bro, I got this exact ride except mine is a manual. I live in Anchorage. Surprised I haven’t seen yours running around, they kinda stick out. I love it. Can drive anywhere, summer or winter. Bought it from a lady who lives above Goldenview, up Rabbit Creek rd, that’s how I knew it was capable of going when it’s get rough out there.
Sold mine a while back. Solid ride.
ell I guess I was just hoping someone ells had this problem before and had answers to where to look , thanks anyways keep up the good work later billy
Sorry I couldn't be more help.
great info helped me out big time on my 1989 dodge raider
So where do you go about getting all the chart code numbers? to know where you problem issue is.. say i have a number 7 where do i go to find the chart?
these are a Mitsi Pajero in AU and i'm sure they crossed over to Holden rodeo as well
I do still see these on the road.
that's awesome. I wonder if this will work on my 96
Thanks for this- I have a 1990 montero and a 1991 montero both with check engine lights on. I used digital tester- I get no pulsing voltage in either car connecting to the DLC port... both read .06 volts and can waiver up to .1, but mostly is fixed on .06. Any suggestions? I put the positive of the tester on the yellow wire and grounded the other to the battery. I drove one for many years and it stopped starting and then fired up the other one about 5 months ago and drive it often and it failed to start yesterday after using it all weekend. It has fuel and turns over normally. Best, Dan
Great info!
Appreciated, just got hold of a mint 1990 mk1 5 door Diesel one !
Hello hi We are also happy to have a 1991 model we repair it It has to be done and your phone number and address etc.
Shah g yeah mate 156 mollenego avenue 1800-507-6783 look forward to hearing from you god bless have a good day
You still have that 1990 diesel montero tahir?
That's weird. On alot of early OBD1 cars you can short pin A and B on the diagnostic port and the CEL light
blinks out the code. I love OBD1. So being that Mituz's are not sold there, are they an exotic car when someone see's one? Everyone gets out their camera phones to take a selfie picture with it? lmao
+Ghetto Wagon No but when a mechanic sees one in his shop he shoots himself in the head. Haha.
Hi i Have a gen 2 v6 3000ltr the diagnostic connector I think is near the fuse box. but when connected my meter just stays on.
which pin does the yellow wire go to? I can't see it without pulling it all out in mine
was wondering if there was a vacuum leak threw intake could it cause a code 42) connectors an wire harness if you block the mass air flow sensor with your hand it causes it to run better so some were there is a mix up with the fuel and air mixture still working on it ( sad it is )
that awesome, can i put 12v bulb on it,? thanks so much, 😁
I have a 91 Montero with a CEL, and when I hook up my voltmeter and turn the key on, it just goes to 12 volts and stays there. Ive tried both types of voltmeters with the same result. Any ideas? Thank you!
Maybe your on the wrong pin? Should pulse voltage unless theres a short to voltage I guess.
I tried running positive to yellow, and negative to battery ground, then read somewhere to run ground to the opposite corner of connector (ecm ground) with the same results. Id love to see a wiring schematic of this thing, but Not one Mitsubishi dealer in the Northwest has technicians that have been there long enough to have worked on OBD1, in fact, a few didn't know what I was talking about!
You are excelent
is it the relay on passenger side up by dash up from icm
ive looked all over for it but the motor goes up in idle an the power is by half you un plug air mass it comes back I bought one still the same but a little better also the tps unplugged makes it better losing my mind on readin the book and trying to resolve this problem what do you think
you make it look easy I wish it would come to me that way the whole top end has been replaced at first it ran grate then this started going on lose of power changed air mass coil distributor no spark fix that new wires plugs cap just off the top what do u think I should look at either way thanks for responding cant find any one who might know something on what to do nice ride hate to just give up to much money into it
still a work in progress ,for some reason I have a high idle the sensors that relate to it seems to be working but on a cold start , the idle is 2 plus but after a worm up it drops down to 1.5 or so , I keep thinking intake leak but no signs in that area ,, hummm do you think I'm missing something else that could cause this problem your thoughts are appreciated and thanks for your help Montero man what a pain its ben ,
bill williams adjust your idler.
last question is there a way to have this Montero scoped to see what's up, money being spent on part that don't fix it
was wondering old owner changed the icm got it used it states 1990 , this one is 1992 do you think its reading wrong causing the these problems or even bad
That's pretty neat Tim. Is there a way to erase a code without a scanner? My local tech did it for me but I thought I wouldn't bother him if I didn't need to.
+wyattoneable Sometimes just disconnecting the battery for ten seconds will erase the code but depends on the vehicle. In this case disconnecting for ten seconds will do it. It's worth a try but keep in mind that when you disconnect a battery it also resets any learned values like idle adaptives and can result in drivability issues for the first few miles of driving like stalling.
+The Car Doctor I appreciate your time.
No problem.
I got codes 92 and 78 for my pajero io. Did I do it right?
Currently trying to decipher the code. Could you help read the code?
when the code 42 said wiring harness and connecters does that mean all or just the ones on motor area
Just the bad ones
I know that was just wondering if just the one under the hood check
or do I have to check all
Just the connector wiring at the sensor.
hey I found the ox sensor under the Montero it has a build up of oil from leak( timing chain cover ). if its not receiving the sensor info will it make it do what its doing ? idle up an down with no power ....
Thank you
well I went an checked again the meter made 4 long ones an two short ??
would a oxygen sensor cause the same symptoms loss of power up an down idle
That's possible. What's the fuel pressure?
still isn't fixed been down with very bad back hope to fix soon ,also 98 Saturn runs grate cold but when warm it surges code said crank sensor got new one but still the same and still flashes same code no signal at crank sensor ????? man between both lost my mind input please
LS motor with 4l60 bolts to the transfer case.
I have a 1990 rs with 150k on it and it was the best car before my mom drove it with no oil. now I'm trying to find a new motor
Mom gets a free pass. Give her a hug and get busy with that motor swap! Take care.
well just to let you know it was not the control relay, I should have known if it was that it would not have started I guess its back to checking all the connector on the harness thanks for helping me get this far with how to read the codes probably going to sale it if I cant fine the problem whished you were working on it ha ha ..Billy
Good luck. Sorry I haven't been able to respond to your questions. There has been a problem replying to posts here.
how to test the control relay on a 3.0 montero
i tried this, i am getting continuous short pulses , what it means ???
kind of surges when put in gear no power unless u un plug air mass sensor then ruff idle but has power checked the tps it has 4 volts when closed also runs better when unplugged but cant run it like that help please
Any stored codes?
yes I found one 42
what's the odds of it being the control relay
In the video I saw as long= .01. For short, I saw 12.11. Can you please explain how the code is 14?
.01 was long, and then you count how many times the 12.V reading pops up. In this instance, .01 was long, that carries a value of 10. And there were 4 bursts of 12V readings. 10+4=14.
What would it show if there is no fault code?
can anyone please help i have a 1991 pajero /Shogun gen 2 v6 3ltr 5g72 there are two silver like condensers fitted by the coil can some one tell me what these are called and what they do?
Those are to prevent radio noise. Capacitors.
it says harness an connector ? control relay ?? what's a control relay
well found that the plenum gasket is leaking because one bolt was striped causing a vacuum leak that causing the rpm to idle high so you never know until you start looking into why ...
Awesome find!
Or just bridge pin 1 to ground
Observe the Check engine light flashes
I tried that and got 4.54, 4.55 and 4.56 readings
1990's........a time when you and I had much more hair and much less girth, lol.
+ICU2 I forget those days...but that was when I had a lot more brain cells.
+The Car Doctor Yeah, use of all those automotive chemicals over the years such as brake cleaner, carburetor cleaner, fuel injection cleaner, blah blah blah can cause short-term loss of long-term memory or something like that................I forget. lol
Oh man I'm sure. I can hardly tolerate a whiff of most that stuff without getting a splitting headache for a day. And the stuff we used to come in contact with daily was super nasty. Plus all the weed I was smoking didn't help.
still trying to be able to read it don't look like your flashes
super
I took the brain out noticed that it was 1990 from wrecking yard minds is a 1992 the old owner said he replaced it well he did but it has different mounts and its not the right one for it have I have one coming tomorrow hopefully it fixes it will respond either way , man what a pain its been , never take the word of anybody check your self it may keep you from going insane ha ha ha ..
have a 94 Montero looks like the pins are on the fuse box it has a 12 pin case but only 6 pins 1 at the start an 5 of them at the end ?man really confuessed
I don't think this process is correct for your vehicle it sounds like.
you know I think I did a boo boo I unplug the battery for different reasons an cleared the codes will drive a short bit tomorrow an see if I can pull a code without clearing it, ha ha still isn't easy to read them get back to you soon Billy and thanks
sorry typo 6g72
well at least I got a code 42
stress an more stress
Having the wrong ECU could cause these issues. It may not be calibrated for the same crank reluctor and you would never know. Probably need to take to a shop and at least have them diagnose the problem.
thanks its probably the best thing to do money spent time wasted thinking I can fix but reality is its over my head without the right tools thanks for your time will let you know if fixed ha ha weeeeee damn head ache
gone crazy I have