Do the connectors have any identifying numbers? It seems like corrosion resistant connectors for the throttle sensors are the only real change. It could be easier to clip wires and just replace those connectors.
My understanding of the problem from reading the NHTSA Recall Report and from my experience with the problem is this:
I do not think there is anything wrong with the sensor connectors, the problem is with the type of splice that was used within the wiring harness. Yamaha's solution to the problem (described in the Recall Report,
Description of Remedy -
link ) is to bypass the defective splice with a new sub harness that has a better splice in it, thus the need for the new connectors.
Description of the Splice:
The four wires from each sensor connector (APS and TPS) go into the wiring harness and shortly after entering the harness (within a couple inches) some of the wires are spliced together then go on to the ECU.
Reference the diagram below, the blue wire from each sensor connector enter the wiring harness then are spliced into the wire that goes to the ECU connector (3 wires spliced together at this point). The same is done with the black/blue wires (3 wires spliced together).
In the picture above that OldRider posted (Reply #159) of the new sub harness you can see these 2 splices. I would guess they had a reason to use a clear covering over the splices, so they could be inspected)
What I learned from my problem and from reading a thread about this issue:
See the thread "
No idle and high idle problem", people have had different problems as a result of these defective splices, it just depends on how the connections/splices break down for each individual, but probably most owners have not had any problem.
I have 80,000 miles and owned my 2013 since new 6 years ago, Dec 15,2012. I never had a problem with this issue until a couple months ago, mid September. I had an intermittent problem where it would be running just fine but sometmes when I would come to a stop and the RPMs dropped, it would just drop straight to zero RPMs. I suspected a bad TPS sensor but I checked it and the resistance was within spec. I was at a loss about what the problem was, then I found the thread mentioned above and that led me to checking the wiring harness.
I eventually raised the tank and noticed where the wiring harness goes along the horizontal bar on the frame, the harness was sagging a bit just a couple of inches before the point where the pigtails for the APS and TPS sensor connectors come out of the harness. I started the motor and poked around where the sag was and it affected the idle, I poked some more and it died. I think I found where the defective splice was in the harness.
I straightened out the harness and zip tied it to the frame to support it. That "fixed" my problem. After my problem first started, it was happening quite often, normally within 30 miles while just riding around locally with stop and goes. I could restart it easy enough by giving it throttle but I had to keep the revs up until I got going then it would run just fine. After my "fix" I rode over 1000 miles with no problem. Coincidentally and lucky for me I found out about the recall coming out just a couple days after I did my fix.
The main point of all this is just that I think I pin pointed where the splice was within the harness without actually opening up the harness and looking.
I have no inside knowledge of this problem this is just my understanding of how things are.
Maybe this will help those who have not had to dig into this problem yet.
Without this forum I don't think I would have been able find my "fix" to the problem before the real fix (recall) came out.
)
