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Pulling fault codes

presterone

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Jan 23, 2012
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514
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brunswick maine
So I assume you attach a jumper wire to the ground and MPI terminal in the diagnostic box next to the kick panel fuse box? With the key on? I tried the other day and the check engine light did nothing
 

ktmrider

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Sep 10, 2007
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3,128
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Tempe, AZ
Nope wrong assumption. Look at the VFAQ, better yet bookmark the VFAQ for the procedure.
 

JNR

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Apr 23, 2004
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9,815
Location
ca
Be careful grounding out connectors, if you're not sure they're the right ones...electrical issues suck and I found out the hard way (no fault of mine other than not checking a bought harness) that these cars are interlinked a lot more than I thought was possible, with respect to the ECU, sensors and all that.
 

presterone

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brunswick maine
Yea the vfaq says get a buzzer I know but is that really what Mitsu techs did? There has to be something else,
 

DynastyLCD

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May 12, 2006
Messages
761
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Harwinton, CT
i use a digital multimeter, with the continuity check. mine has a beeper when it has continuity, so this worked perfect.
 

DynastyLCD

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May 12, 2006
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Harwinton, CT
yes
 

presterone

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brunswick maine
Such a pita the CEL only comes on after a couple minutes of idling or driving and as soon as I shut the car off it will go out and I will have no stored codes
 

presterone

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brunswick maine
Oh I thought it wouldn't work but last time I checked it while running the light must have gone out. This is an intermittent pain in the Arse
 

presterone

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brunswick maine
So I think I figured out I have a code 14 for throttle position here are the pulses.

s-L-L-S-L-S-S-S-S-L-L-L-S-L-S-S-S-S-L-L-L-S-L-S-S-S-S-L-L-L-S-L-S-S-S-S-L-L-L-S-L

I know its alot but I wasn't exactly confident on when to count and it seems like in the vfaq its five digits?
This makes sense because at light throttle at times the car will just sputter and the AFR's will drop from 14.7 to like 12.2
 

mitsuturbo

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Jun 2, 2008
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Near Seattle, Washington
Quoting presterone:
Yea the vfaq says get a buzzer I know but is that really what Mitsu techs did? There has to be something else,



At the stealership, we used the MUT-II. It's a mitsubishi diag/scan tool. They work great for our cars, and other older mitsubishis. It even pulls ABS codes. They're cost-prohibitive for most of us, especially considering there are other ways to pull codes.
 

presterone

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brunswick maine
maybe all I have to do is adjust it? The TPS on my MR2 was really finicky I got it close enough by adjusting it maybe its the same deal with these cars? I mean its just a potentiometer correct?
 

James

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Apr 7, 2012
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Port richey Florida
You posted the readings yourself...

It's 31 and 14.
 

presterone

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brunswick maine
Yea Dick but I wasn't sure 100% just trying to verify because the four short pulses in a row threw me off and there wasn't always a long pulse after a short in the right sequence.
 

mitsuturbo

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Jun 2, 2008
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Location
Near Seattle, Washington
All you need to do, is this:

Go to the convenience store.







Buy a gallon of milk.












Go home.















Drink the gallon of milk.


















Take the empty milk jug to the gas station.
















Go to clerk of gas station.
















Pay for one gallon of gas.















Ask for matches.




















If they do not have matches, get a lighter.

























Fill the jug with gasoline.






















Go home, with your newly acquired gallon of gasoline.























Pour gasoline all over vehicle.

























Use previously purchased matches or lighter to ignite gasoline, thus fully immolating the vehicle.













Relax, and watch it burn. Dick.
 

James

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Apr 7, 2012
Messages
1,322
Location
Port richey Florida
Quoting :

L-S-S-S-S (14)
L-L-L-S (31)
L-S-S-S-S (14)
L-L-L-S (31)
L-S-S-S-S (14)
L-L-L-S (31)
L-S-S-S-S (14)
L-L-L-S (31)




What part of this threw you off? (10+4=14) and (30+1=31)
 

presterone

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Jan 23, 2012
Messages
514
Location
brunswick maine
I thought the short pulses in a row were indicating no codes this is the newb forum right?

hahaha dick although I do feel like lighting my car on fire sometimes
 
Last edited:
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