5th Generation Maxima (2000-2003) Learn more about the 5th Generation Maxima, including the VQ30DE-K and VQ35DE engines.

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Old Oct 2, 2018 | 07:47 PM
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EXPERT ONLY EP LEVEL 10. Enter at own risk.

No one can seem to help me. Do you know your stuff??? I could use you help.. Below I will post my previous post. but Ill try to widdle this down and simplify it.

1; Do I need to have the ECM plunged in and back pined to get the values from the APP?
2; is the 5v produced from the ECM from 12v? or dose it pass threw?
3 ; Why does my color code wire harness not mach up to my year( 2002 Max Auto)
Old Oct 2, 2018 | 07:49 PM
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Previous Q;
Just got an 02 max auto ( I'm learning there wasn't too many variations this year,,, well except for mine )
I couldn't turn it down. 125k, mint in and out. But the engine compartment was never washed. So i washed it. Like I did with so many cars before it.

And this is where the fun starts.

Moments after the wash I decided to add a lb.of 134a. Had my buddy jump in the front seat to get the low side down and he says " I GOT NO PEDAL"
Huh?
First it threw codes for TB. Replaced it.
Then it threw MAFS. Replaced it.
Then it threw codes for APP. (both 1 and 2)
Still nothing.. Keep in mind this hole time Im doing the pedal dance. Dead shorting terminals You name it,, I tried it.. At this point I'm like " F**k all this s**t. I'm getting a new ECM and sending all this stuff back" 2nd ECM comes (and with the new parts still on) I get No codes and I'm still locked at 1300rpm. Cant reset the ECM and it don't even flinch when I smash the pedal.
Well now I'm pissed..This thing ant gonna win.
Bring on the values.
I got 5v.at the TB. Solid ground but no pedal flip flop variation in voltage. At the APP I got my 2.5v at (64) and my 5v at my (111) solid ground and pass thru the sensors seems to be fine.

Which leads me to why I'm leaving this post. I appear to have a different harness then whats in the 800 PAGE.ENGINE CONTROL SYSTEM MANUAL.
I checked the 01 02 03 04 and nothing matches up,, colors,, values,,.Nothing..This is preventing me from checking continuity and values at the ECM. I hit a wall
I will drive (push) this thing off a cliff before I rip the dash out and make my own wire harness..

!st Q: ignoring the fact that my colors don't match do I need to keep the ECM plunged in and back pined to get these values?. I only get the values at the APP and TB with it plugged in. and even with it unplugged I'm getting 13.5 volts(%200) at 74. I know that ant suposta be there..
Please help.. Ive got to be missing something...and I'm sorry this is a hard question. Hoping someones up to the challenge.
Old Oct 3, 2018 | 06:49 AM
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Okay, I figured it out.. Yes the ECU needs to be plugged in and back pined. The colors are all right except after junk 161. each ECU plug-in is costume. It was my APP values at resting position. While pressing it was within range but at rest it fell to sh**..

Not to be a jerk but I was pretty bent no one here could help me. I figured you guys were experts.. WRONG. Well I have a degree in electrical engineering and have been staring at the 5th gen wiring diagram for a week now.. officially a APP TB MFS and ECM expert. If you need help with anything unlike others I'll be wiling to help.. Ask away..

Last edited by Karlwashere123; Oct 3, 2018 at 07:27 AM.
Old Oct 3, 2018 | 08:31 AM
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Originally Posted by Karlwashere123

Not to be a jerk but I was pretty bent no one here could help me. I figured you guys were experts.. WRONG. Well I have a degree in electrical engineering and have been staring at the 5th gen wiring diagram for a week now.. officially a APP TB MFS and ECM expert. If you need help with anything unlike others I'll be wiling to help.. Ask away..
You posted this question 12 hours ago. You specified EXPERT ONLY. What exactly were you expecting?
Old Oct 3, 2018 | 09:12 AM
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Originally Posted by bluemaxx
You posted this question 12 hours ago. You specified EXPERT ONLY. What exactly were you expecting?
Agreed. What an asshat. And self proclaiming that he is now an ECM expert is comical. Not a good way to introduce yourself and get acquainted with other members.
Old Oct 3, 2018 | 09:59 AM
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Not trying to be an "asshat" but over 150 people looked at those posts and I got nothing.. Make a snarky comment and bam...
Old Oct 3, 2018 | 10:00 AM
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Sorry..
Old Oct 4, 2018 | 04:34 AM
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10 pm on a tuesday night, and expects an experts diagnosis and answer over night by 9 am wednesday morning ! nice dude , i know it was late and you were stuck but stay humble dude. stop getting bent over nothing.
Old Oct 8, 2018 | 12:38 PM
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There are people who know the answer.. but i doubt they will give it now
Old Oct 8, 2018 | 02:56 PM
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In before the

Old Oct 11, 2018 | 06:25 PM
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Originally Posted by Fakie J Farkerton




In before the

This is a discussion forum and we're having a discussion.

Old Oct 11, 2018 | 07:16 PM
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Is that george_?
Old Oct 11, 2018 | 08:21 PM
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Originally Posted by nestorlugo
Is that george_?

Could be..
Or Planecrash went to school..?
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