Some of us have experienced the dreaded FI light on our 650s. In order to correctly determine the cause of the malady, you need Suzuki's wonderful and oh-so-special tool, a glorified jumper, aka "Switch Mode Selector" (part # 09930-82720). This costs $11.50 at Oneida's. Quite a while ago jchertig sent me some info on making your own jumper. I regret taking so long to post the information and get it out in the public domain. I can't take credit for this original research, so I appreciate John's efforts. In addition, I have not yet performed this function to determine if the instructions are correct. Please post here if you find they do or don't work.
Yes... just in case I ordered the FI Service Switch on-line for about $20 delivered and then proceeded to drive to my local dealer and physically looked at the one they had in their service department. I spoke with one of their technicians who was familiar with using it and he joked that it as a waste of money as all he did was jumper the two wires in the diagnostic connector and didn't bother with the "switch".
So that is what I did... took an inch or two of wire and striped 3/8" of insulation off each end and used it to jumper the two wires that then generate the FI error "C" codes in the dash display below the MPH indicator. The diagnostic connector is located behind the plastic cover on the left side of the scooter which you have access to when you raise the seat on the 650... near the seat hinge. Remove one Phillips head screw and you can lift the side of the black plastic up enough to get access to the connector, which has a black rubber cover that you can see in the photo.
There are a number of wires coming out of the connector but the only two you are concerned with are the White with Red stripe and the Black with White stripe. If you face the female end of the connector they are the two, top and bottom, pin connectors on the far right hand side of the connector. Again, I think the photo clearly shows where they jumper needs to be connected.
After putting in the jumper just turn on the key and, if necessary, turn over the engine with the starter switch. The "C" code will show up in the display. Simple.
I don't know about you guys, but since I have a 400 mile trip planned for this weekend, I plan looking at this tonight, and making a jumper to take with me.It is nice to find a cheap, simple work-around to a "special tool"... especially one in which no dealer appears to stock and charges $15+ for a connector, two wires and a $.0.50 toggle switch soldered onto the end. What I find really interesting is that the switch itself is totally worthless and adds no value whatsoever.
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