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Perfect PCIII install

76K views 290 replies 139 participants last post by  Roldas  
#1 ·
Updated 8-04-06

This install covers ALL years of Warriors to date.

If your Warrior cuts out, has dead spots, a wacky throttle response off idle or a dyno tuner that goes nuts trying to get you a good custom map follow these instructions. It will fix 99% of these issues unless you have a broken CPS.


Many people have experienced that the PCIII setup as described in its manual is not perfect. The TPS read out in particular is a problem. Instead of a steady TPS signal the PCIII (regular and USB) jumps around pretty wild. This causes not only shops to do custom maps to take a lot longer to get it right but can also lead to less than perfect throttle response of your Warrior.

The solution is very simple and is highly recommended for EVERY Warrior PCIII owner.

IMPORTANT: When looking for the right wires please make sure that the first color is the base color and the second on is the strip on it. So black/blue for example is a black wire with a blue strip.

Start with the gray PCIII TPS hookup wire: Pull it back through the insulation to have it come out pretty close of the PCIII. Depending on where you install the PCIII you only need a few inches of gray wire. Check first before you cut it too short.
Now locate the solid yellow wire that runs into the ECU. Be aware that there are several wires that have a least part yellow marking on them. There is only one solid yellow wire (it might have some gold markers on it as all the wires).
Cut that wire, take the insulation off both ends, twist the gray wire around one of those ends, push a piece of shrink tubing over the other yellow end and solder the connection back together. Last but not least push the shrink tubing back over the solder joint and heat shrink it.
The second connection that is even more important is the PCIII digital ground. The Warrior uses a digital ground wire for all its sensors to reduce noise. The PCIII comes with a digital ground wire but unfortunately as it is sold it is connected to regular ground. When you pull back the insulation of the PCIII ground wire you will find two wires ending at the ground connector: One is black (regular ground) and the other one is black/white (digital ground). Cut the black/white wire and pull it back to the same exit you used to run the gray wire. The black/white wire will need to be approximately the same length as the gray wire. Now find the black/blue wire that runs into the ECU. There is only one.
Do the same thing as before but now splice the black/white (PCIII) wire into the black/blue (ECU) wire and heat shrink the solder joint.
Install the PCIII in its final location and you are done.

Now when you hookup a laptop of dyno computer to the PCIII the TPS signal on a running Warrior should be rock steady and the bike should run cleaner and very crisp. If not you might adjust the map you are currently running.

Hope this helps!

Oliver
 
#227 ·
Question... I reset my TPS using the method described in the PCIII help.

Click reset, open the throttle to the max then accept. My idle is now set to zero and it runs great. But since this is different from the method described mere I wonder if it's wrong. Is the reset method for the TPS posted in this thread better then what Dynojet recommends?
 
#228 ·
Would any of this have to do with my odo and clock resettting whenever I stall at a stop? Once in a while, at least once a day as I come to a stop, my engine stumbles right off idle. I'm getting into the habit of lightly revving the engine at a stop to ensure it's running fine. I'm tweaking my PCIII map and am about to set the 0% throttle (currently 0 at all rpm bands) to 2 in the 750-1250 rpm bands. Any thoughts?
 
#229 ·
quote:Originally posted by dmonty

Question... I reset my TPS using the method described in the PCIII help.

Click reset, open the throttle to the max then accept. My idle is now set to zero and it runs great. But since this is different from the method described mere I wonder if it's wrong. Is the reset method for the TPS posted in this thread better then what Dynojet recommends?



Both ways work just fine.
 
#230 ·
quote:Originally posted by SWODude

Would any of this have to do with my odo and clock resettting whenever I stall at a stop? Once in a while, at least once a day as I come to a stop, my engine stumbles right off idle. I'm getting into the habit of lightly revving the engine at a stop to ensure it's running fine. I'm tweaking my PCIII map and am about to set the 0% throttle (currently 0 at all rpm bands) to 2 in the 750-1250 rpm bands. Any thoughts?


Sounds more like a dead battery. If your clock and odo reset thats because of the voltage dropping. Last year 3youngns battery died in high summer heat. I would start and then get worse and worse. This bike dies on him several times and I remember we had to jump start him with temps in the 115+ range.
 
#232 ·
Howdy all,
Well I searched and I found. I have been dealing with the bouncing #'s and the DEAD spot. Fact my keword search was DEAD SPOT and it led me right to this thread.

Now I bout my 02 preowned with the PCIII already installed. Oliver makes 2 points. (1) is to tie the gray into the ECU yellow and (2)seperate the digital ground and the regular ground by splicing the b/w pcIII wire into the b/blue ECU wire.

Can someone tell me from your experience where the grey is installed if you follow the PC install instructions right out of the box? I assume it needs to be moved from somewhere to the yellow right? The grounds are very straight forward. I'm just curious where I will find the grey running to currently. thanks/gary
 
#234 ·
So the is the gray wire 1 of the wires in the 3 wire connector that connects to the TPS? and is it pulled from the connector or just "cut" before it goes into the connector housing and rerouted to the yellow wire on the ECU? I think I asked that right...

I am looking at the power commander website installation guide athttp://www.powercommander.com/downloads/403/install/411/eng403-411.pdf

I can see that the instructions say to "unplug the TPS connector". Then it says to plug in the connector from the PCIII to the TPS and to the wire harness (that was unplugged from the TPS). I am "assuming the grey wire when doing the factory install is one of the wires either going into the TPS connector or the wire harness connector ??

Can you confirm? or is the gray wire all together seperate? from these connectors.

thanks
 
#235 ·
Caution to all of you damgerous wannabe mechanic's. It is very expensive to replace a stock ECU once you fry it. It has been done and it is a costly mistake. If you have zero knowledge and have any doubts about moving forward with the Perfect PCIII Install then please stop and have someone help you who has experience and knows the procedure.
 
#236 ·
thanks for the caution Ed, do you have any specific cautions you'd suggest. I feel I am pretty handy with a wrench, and generaly speaking with the wiring as well. As I read this it is pretty simple and straight forward to me. So I feel pretty comfortable doing AT LEAST the ground mod piece of this. Its the grey wire I need further clearification on. But I am about to go inspect the bike right now and see where the gray wire is currently running to. more to come.
 
#239 ·
done!, gray wire soldered in!, let the testing begin. So far I have a rock solid 0% throttle. Tried setting to 100% as described in this post and so far no go. Not sure why but I will refer to the PC user guide and try it that way and see if I can get that.

At the moment I have loaded amospro's map so I need to test performance on the road once I get the TPS set.

So far the DEAD SPOT seems to be gone. More testing to come and I will let you all know how things go.
 
#240 ·
Morning all!,
So, I rode it hard last night, and road her again this morning.
Idle's nice. no DEAD SPOT in the idle. So for this I am thankful and also appreciate Oliver's hard work and technical know how!.

Now I am dealing with some popping (which I think is excessive but we'll talk about that) and a sluggish throttle. I'll explain in a new post.

gc
 
#244 ·
For all new warrior owners with the PCIII. Never assume the perfect install was previously done as I learned. Just got my bike and that read alot to learn about the perfect install, ecu adjustments and TPS adjustments. The ECU was cake, did the perfect install but had to re-do because I spliced the Blue/black trim instead of the Black/blue trim wire. Another question that was maybe addressed was trying to figure out which wire to connect where.
1. Black/white from PCIII to Black/blue from ECU--other end removed from ground connection.
2. Grey from PCIII to Yellow from ECU. Other end capped off or just pulled out.

My bike is now smooth, before trouble riding slow when hitting speed bumps but now i don't have to even hold the clutch in.

Question #2 was when setting the o% position, should that number be absolute O or the idle value that is in the current box.

Surprised to find that my ecu Co. values were -5 and 0.
Thanks all you guys for your info,greatly appreciated.
 
#246 ·
quote:Originally posted by SWODude

Is there a schematic drawing available? I can read directions and all, but I do better if I can look at a schematic. Fixing to do this mod over the winter.


Check out Redhouse's write up with pixs.

http://users.adelphia.net/~redhorse/power_commander_install.htm
 
#247 ·
Thanks kich, and to answer my own idle rpm question..idle value was set at 520 which was wat was in the current box and now i get a solid 0% idle. Also just called the yamaha dealer and am due for the tps recall and gas tank bracket any time when the parts come in. Thanks you guys are awesome. Thinking about goin to Daytona tom, sat, but i don't think the weather is gonna hold.
 
#248 ·
Just completed the PCiii perfect install. Thank you Redhorse and Oliver, your instructions were


great. I performed the actual installation last night, it took about 2 hours start to finish. This morning


I went for a little ride to warm her up and zero the throttle out, etc. Thank you to all of the members with


posts pertaining to their owninstall. I found alot of little tips etc. which became very helpfull. Next mod


planned is the vbak, then I'll get her mapped.I also have a question pertaining to maps. I've got an'06


with speedstar exhaust and stock air intake except for the speedstarintake, scoop. The question is that


I decided to load power commander map no. M403-010,which is for a stock


intake and Vance & Hines Big Shots exhaust, does this sound correct?
 
#250 ·
Get brave, Chief, and do it yourself its smarter and more fun since you can read on-line instrutions three times and do it once then read the on-line instructions again and review what you did then fire the beast and ride. Do if you wonder how long it will take? Its possible you can do the perfect install PC3USB in about as much time as it took me to type this -but maybe that's exagerated however - still do it yourself then write a very annoying run-on sentence like this one about how freaking easy it wasand it'll all become clear.
 
#251 ·
Hello,


I've read through all the posts on this sticky regarding the perfect PCIII install and still a little unclear on the grey wire asmine has been installed at the TPSwith the connector per Dyno Jet instructions. I've seen this question asked a few times, but didn't really see a clear answer. (Maybe just too much information and I just missed the answer?)


Can I just get rid of the connector at the TPS and solder the grey wire right there? Or does it definitely need to be pulled back and connected to the yellow wire on the ECU? If it does need to be connected at the ECU, what do I do with the connector that is still connected at the TPS?


Another question that I have not seen an answer to, and would be nice to know, is there any advantage to using a Dyno Jet recommended tuning center versus a local shop with a dyno to map and tune it?


Thanks in Advance for any help.


Steve