Diagnosing AC Fuel Injection error codes without a reader
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Diagnosing AC Fuel Injection error codes without a reader

 
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Diagnosing AC Fuel Injection error codes without a reader - 2/12/2008 11:31:55 PM   
engie


Posts: 5180
Joined: 7/9/2006
From: Jackson/Starkville, MS
Status: offline 		This is an idea that originated from Suzuki FI systems.  Apparently AC models their systems almost directly after Suzuki...

All you need is a papercip.  Bend the paperclip straight.  Now look under the seat and find a six prong "output" connector(three rows of two).  This will be a white connector with a black cap on it.  Remove the cap.  Be sure the bike is cut off before proceeding.  Now, notice the location of the wires actually entering this connector.  There will only be four wires entering into the six connectors.  Your interested in the outside connectors that each have a wire running to them.  One side will, the other side will have an empty prong.  Put the paperclip into both of these connectors(the outer ones with wires), and effectively "short" the two wires together.  Turn the key on.



From there, one of the following codes will be read.  Whether your quad reads AC or EC before the number is irrelevant.  Suzuki FI will say EC while Arctic Cat FI will say AC.  The numbers are what matters.  Here are the codes.

AC00 NONE
AC12 CRANK POSITION SENSOR
AC13 INTAKE AIR PRESSURE SENSOR
AC14 THROTTLE POSITION SENSOR
AC15 ENGINE COOLANT TEMP. SENSOR
AC20 RELAY (DIFF LOCK RELAY)
AC21 INTAKE AIR TEMP. SENSOR
AC23 TIP OVER SENSOR
AC24 IGNITION SIGNAL (IGNITION COIL)
AC32 INJECTOR SIGNAL
AC40 IDLE SPEED VALVE
AC41 FUEL PUMP CONTROL SYSTEM

You can also check the alignment of the Throttle Position Sensor, to ensure it is set within specification.  If it's not, you will experience midrange performance problems.  It is determined by the line on the left while in diagnostic mode.  You want the line to be in the middle of the A or E, not at the top or bottom.  If it's at top or bottom, you need to adjust your throttle cable to get it within spec. 

NOTE:  The thundercat may be slightly different and have a AC33(or something similar) because it has a second injector to monitor.  I have yet to see a service manual to confirm one way or another.

Thanks to NYROCatv for the illustration...

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Post #: 1
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/13/2008 10:04:00 AM   
KS Cat

 

Posts: 889
Joined: 6/24/2006
From: Kansas
Status: offline 		Good info as always engie. Maybe Garrett could put this at the top. I got one for you. Yesterday a went to move my quad and I got EC42 on the display for maybe 2 seconds and then it went away. The quad started and ran just fine after that. Any ideas? There is some talk about it on Arctic Chat but no definite answer.

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RE: Diagnosing AC Fuel Injection error codes without a ... - 2/13/2008 10:19:44 AM   
markleising


Posts: 2054
Joined: 9/26/2004
From: Houston, Texas
Status: offline 		ok, thanks.. BUT YOU WANNA FIGURE THAT OUT ON POLARIS RZRsssssss.. lol.. you would save my life.

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Post #: 3
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/13/2008 11:53:47 AM   
engie


Posts: 5180
Joined: 7/9/2006
From: Jackson/Starkville, MS
Status: offline 		KScat, mine has done that before.  I don't know why/what it is.  It should NEVER flash the actual codes unless these two pins are shorted together.  It should just flash the EFI light and cause the gauge to sweep.  However, like I say, mine has done it also and flashed 3 different codes before going away and running fine. 

Mark, I haven't had much time diagnosing anything on the RZRs.  Talk to the Sportsman guys, it is probably the same procedure to pull them(and I think they know a shortcut)...

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quote:


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Post #: 4
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/13/2008 1:47:22 PM   
700Blaze


Posts: 5259
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From: Washington MO. home of B&J CUSTOM FABRICATION
Status: offline 		thanks for the info engie

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Post #: 5
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/13/2008 2:59:29 PM   
MUDTECHinc


Posts: 1812
Joined: 12/11/2005
Status: offline 		i got a quick question for EFI machines. is there anything you have to seal up for the efi. I am buying a new TCAT just a few days before MUD NATS and need to get it ready in a short period of time so any help as to what i need to seal for the EFI would be greatly appreciated.

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Post #: 6
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/13/2008 6:40:46 PM   
engie


Posts: 5180
Joined: 7/9/2006
From: Jackson/Starkville, MS
Status: offline 		Other than the normal snorkeling, nothing in particular is needed.  There is nothing to seal in the manner you would seal up a carburetor, just be sure to dielectric grease the connection...

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Team Throwed Offroad crew chief

Currently building 4 race motors and awaiting the class breakdowns to start on the rest!!!

quote:


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Post #: 7
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/13/2008 8:50:05 PM   
acer

 

Posts: 534
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Status: offline 		what connections are yall always talking about

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Post #: 8
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/13/2008 9:43:46 PM   
lonegunman


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Status: offline 		engie, just where do you come by all this very valuable info?

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Post #: 9
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/13/2008 9:50:16 PM   
kscowboy


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Status: offline 		He is actually YODA.  He just goes by engie to keep a low profile.

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Post #: 10
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/13/2008 10:45:58 PM   
engie


Posts: 5180
Joined: 7/9/2006
From: Jackson/Starkville, MS
Status: offline
quote:

ORIGINAL: lonegunman

engie, just where do you come by all this very valuable info?


I first saw it while surfing at gixxer.com, trying to find the larger injector to work in my quad and thought that connector looked alot like the one on my quad(this was some months ago).  Then I realized that NYroc had a tech tip showing how to do it on Suzuki.  I knew it would work on my quad but wasn't entirely sure it would work on the Arctic Cats' Fuel Injection.  When I tested Tbonesgrizz's 700h1, we found out it would work.   

As far as what connection to use dielectric grease on, do them ALL, at least every one you can get to...

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Team Throwed Offroad crew chief

Currently building 4 race motors and awaiting the class breakdowns to start on the rest!!!

quote:


A second place trophy is only useful as a doorstop!

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Post #: 11
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/14/2008 2:12:34 AM   
corkyw123


Posts: 3236
Joined: 5/15/2007
From: Livingston, La.
Status: offline 		Well Engie, we have the same bikes (well we did when they were NEW, LOL) but here's my quick question. What's the purpose of this? > Meaning, should this be checked only if a code pops up or say should I go out & do mine ANYWAYS? Without my bike acting up any right now, would it be possible for a code to show up saying somethings out or not right?

Just wondering before I start frying this harness, LOL

(in reply to engie)
Post #: 12
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/14/2008 7:19:11 AM   
engie


Posts: 5180
Joined: 7/9/2006
From: Jackson/Starkville, MS
Status: offline 		Corky it should only show if there is currently an error showing on the pod.  However, I haven't been trying it for long enough to say for sure.  I'd check it if I were you, if nothing else just to be sure the Throttle Position Sensor is set within specification(and I never get tired of seeing EC00 show up on the dash either)...

_____________________________

Team Throwed Offroad crew chief

Currently building 4 race motors and awaiting the class breakdowns to start on the rest!!!

quote:


A second place trophy is only useful as a doorstop!

(in reply to corkyw123)
Post #: 13
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/14/2008 1:12:21 PM   
corkyw123


Posts: 3236
Joined: 5/15/2007
From: Livingston, La.
Status: offline 		Alright, I'll attept it today. Might be back here with some questions before the actual procedure.

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Post #: 14
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/14/2008 1:34:11 PM   
MN750BRUTE


Posts: 543
Joined: 4/28/2005
From: Minnesota
Status: offline 		http://atv.dnsalias.com/techtip.cgi?viewcat=11&viewtopic=31

This is from nyroc, I seen this a few months ago and tried it on my 06' Cat 700EFI. It works

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Post #: 15
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/14/2008 8:05:17 PM   
kscowboy


Posts: 8343
Joined: 3/6/2004
From: Aubrey Texas
Status: offline 		ENgie-If the TPS isnt within the specs can it be adjusted or do you have to have an aftermarket ecu or a dealer computer?

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POWERED BY CAN AM
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Post #: 16
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/14/2008 8:31:20 PM   
engie


Posts: 5180
Joined: 7/9/2006
From: Jackson/Starkville, MS
Status: offline 		It can be adjusted simply by adjusting the screws on the throttle engagement.

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quote:


A second place trophy is only useful as a doorstop!

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Post #: 17
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/14/2008 9:11:17 PM   
corkyw123


Posts: 3236
Joined: 5/15/2007
From: Livingston, La.
Status: offline 		ENGIE, I kick my self in the BUTT now!!!!!!!

OK, I still haven't done this thing yet but installed my HMF yesterday, NO aftermarket ECU, & started it just to here what it sounds like. WELL, it's hard to start and it's flashing codes EVERYWHERE's. What does this mean?

I had just said yesterday that mine shows no codes & not 10 minutes later it's flashing every code in the book. Why & what does it mean?

(in reply to engie)
Post #: 18
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/14/2008 9:34:10 PM   
engie


Posts: 5180
Joined: 7/9/2006
From: Jackson/Starkville, MS
Status: offline 		I have no idea corky, I'd pull the battery cable and start again....

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Team Throwed Offroad crew chief

Currently building 4 race motors and awaiting the class breakdowns to start on the rest!!!

quote:


A second place trophy is only useful as a doorstop!

(in reply to corkyw123)
Post #: 19
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/15/2008 7:58:43 PM   
bigbrutemudder_fi


Posts: 552
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Status: offline 		do you have something like this for a brute?

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Post #: 20
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/15/2008 8:36:49 PM   
kscowboy


Posts: 8343
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From: Aubrey Texas
Status: offline 		Corky what did you find out????

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2008 C.M.R. OPEN MUD BOG NATIONAL CHAMPION

TEAM GOR!LLA
POWERED BY CAN AM
#44 REGAN

08 800 outlander max xt
TUNED BY PIT PROVEN PERFORMANCE

08 CAN AM NATIONALS SWAMPACROSS 3RD PLACE
08 CAN AM NATIONALS MUDBOG 3RD PLACE
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Post #: 21
RE: Diagnosing AC Fuel Injection error codes without a ... - 2/15/2008 10:29:21 PM   
corkyw123


Posts: 3236
Joined: 5/15/2007
From: Livingston, La.
Status: offline 		Well KS, I ran into other problems throughout the day so haven't even touched the bike today. I know I can go out there right now and it'll start right up with no codes or anything. It was just doing that at first & started counting down codes.

I did find that the hard starting problem was my spark plug boot was coming loose from the vibration of the engine, so sometimes the plug was firing & other times there was no juice to the plug. I'm not sure if that's what brought on the codes but since I've pushed it back on (tighter) it starts easy & doesn't have any code flashings.

But tommorrow I'm still gonna do this thing Engie posted just to check everything out.

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Post #: 22
RE: Diagnosing AC Fuel Injection error codes without a ... - 5/14/2008 9:05:13 PM   
silverram323

 

Posts: 20
Joined: 5/4/2008
Status: offline 		I had the efi flashing and i did your test. (cool by the way)  And i have a 06, 15, 34 code.  only 15 is on your list (coolant temp)  is there there more codes?  how i do i erase the codes?  thanks for the help.

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Post #: 23
RE: Diagnosing AC Fuel Injection error codes without a ... - 5/14/2008 9:36:01 PM   
engie


Posts: 5180
Joined: 7/9/2006
From: Jackson/Starkville, MS
Status: offline
quote:

ORIGINAL: silverram323

I had the efi flashing and i did your test. (cool by the way)  And i have a 06, 15, 34 code.  only 15 is on your list (coolant temp)  is there there more codes?  how i do i erase the codes?  thanks for the help.


I need more info.  What quad is this on?  What symptoms are you seeing?  Have you recently pulled any fuses?  ETC...

Let me know.  What your saying is indicative of some outside issue.  These sensors don't just "all go out at once".  There's always an underlying issue.  You don't need to worry about clearing the codes.  I never have, and they've just gone away.  I can research the method for you though, if you feel you need it.

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quote:


A second place trophy is only useful as a doorstop!

(in reply to silverram323)
Post #: 24
RE: Diagnosing AC Fuel Injection error codes without a ... - 5/15/2008 5:20:31 AM   
silverram323

 

Posts: 20
Joined: 5/4/2008
Status: offline 		I dont know why my sig is not showing up.  Its on a 06 AC 700 EFI.  (26" mudlites, full snorkels)  I would shut off the wheeler and turn the key back on to let the fan run and it would flash EFI and the gauge would sweep.  I also have been working with speedwerks with a clutch kit and we started with 240 gram total weight (8 x 30 gram) and it would not pull the rpms (54-5500).  so i keep putzing with different weights.  now I'm at 180 gram total (4 x 25 gram  -- 4 x 20 gram)  When i punch it it will hit 6000 rpm and then settle at 5800 on wot.  Speedwerks was saying there is something funny about my setup.  he told me to get it checked out to see if im running lean.  I called the dealer and they want $100 to check it out.  Then i seen the way to check codes.  thanks engie

< Message edited by silverram323 -- 5/15/2008 9:58:53 PM >

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Post #: 25
RE: Diagnosing AC Fuel Injection error codes without a ... - 5/15/2008 8:43:19 AM   
TexasDawg

 

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Status: offline 		It is rumored that all the efi bikes are going to have a recall on the cdi's.  This is supposed to fix alot of problems that we have been having with these bikes after the mods.  Just what I was told.  This should help the mixture.  I heard middle of June.

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RE: Diagnosing AC Fuel Injection error codes without a ... - 5/15/2008 11:25:41 AM   
700ARTICCAT

 

Posts: 35
Joined: 4/19/2007
Status: offline 		Let me see if I understand this engie, once you do this certain codes will come up showing something wrong? To adjust the throttle the pod will have what you need on it to make the adjustment while the paperclip is plugged in? I don't have any meters or anything. In other words the pod acts has a reader.

< Message edited by 700ARTICCAT -- 5/15/2008 11:28:21 AM >

(in reply to engie)
Post #: 27
RE: Diagnosing AC Fuel Injection error codes without a ... - 5/15/2008 11:46:15 AM   
engie


Posts: 5180
Joined: 7/9/2006
From: Jackson/Starkville, MS
Status: offline
quote:

ORIGINAL: 700ARTICCAT

In other words the pod acts has a reader.

                                                                                                                                    
Correct.  The only "adjustment" is for the Throttle Position Sensor.  It should read -COO, not _COO
  _
or  COO

< Message edited by engie -- 5/15/2008 11:48:07 AM >

_____________________________

Team Throwed Offroad crew chief

Currently building 4 race motors and awaiting the class breakdowns to start on the rest!!!

quote:


A second place trophy is only useful as a doorstop!

(in reply to 700ARTICCAT)
Post #: 28
RE: Diagnosing AC Fuel Injection error codes without a ... - 5/15/2008 9:58:14 PM   
silverram323

 

Posts: 20
Joined: 5/4/2008
Status: offline 		any word on the 06 / 34 codes?  Also what gram weights are you guys running in your 700 EFI bikes?  i have 4 X 20 and 4 X 25  so 180 gram total

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Post #: 29
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