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Scooters - 125 to 300 => Grandvista 250 => Topic started by: mrbios on February 22, 2014, 04:52:36 AM
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PROBLEM:
When I push the starter button nothing happens. The battery is fine. I'm holding the break lever and the kickstand is up and then I keep pushing the starter button sometimes I turn the ignition key on and off then suddenly it starts up fine. When I push the button I noticed that there are no sound. I suspect that maybe the switch on the brake lever is faulty and preventing the starter from operating?
SOLUTION: (Updated: 05-06-2014)
Corrosion on the Rear Brake switch. Here's the deal. The two brake levers have a switch that is Normally Closed (NC) meaning power is allowed to flow through the switch when it is NOT pressed. Pressing the brake lever (un-press's) the switch and which closes (completes) the connection and puts the brake light on and allows you to start the scooter.
Weird - when the switch is mounted it is pressed in by the brake lever which breaks the connection (no brake light). When you press the brake lever you hear a click as the lever moves away from the switch and stops pressing it which cause the switch to close the connection.
Diagnostic Steps:
When things were working (most of the time). I noticed that if I had the kickstand up, scoot switched to Run, ign key in starting position and I pressed the brake lever then touched the start button (even for a second) the LCD screen resets (same as when you first turn the key to on) and the head light goes off (to maximize power to the starter). But, when the problem happened and I pressed the start button the screen did not change and neither did the head light. I then suspected the Left brake light switch. I found if I held the starter in and pumped the brake lever a bunch of times the starter suddenly worked. Also, I found when it was not working that the rear brake light did not go on with the left lever but it did go on when the front brake (right lever) was pressed.
After I parked the scoot for 3 weeks due to losing the drain screw on my carb the scoot would not start at all. I removed the switch and manually connected the wires and the scoot started perfectly every time. I priced the switch online and it costs $20 + s&h. I then pried open the switch, cleaned the contact with sand paper, reinstalled it and everything is working great.
Interestingly, the switch never failed to make the clicking nose. Moral of the story: just because it clicks doesn't mean the connection is ok.
PaulC
2005 12,600 miles.
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When you turn the ignition switch ON and the start button doesn't do anything, are the headlight and instrument panels energized ?
Probably the ignition switch, after all even GM has faulty ignition switches!
scoot safely,
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I can tell you that on my motorcycles that I own(ed) there where following reasons:
1.) Corrosion on the starter switch or ANY power/ground connections (check also your battery plus and minus connections!)
2.) Bad connection of solenoid to starter, or bad ground in general
3.) outgoing/faulting solenoid, or starter motor
If you hear a "click" then your solenoid is working and the starter not turning (motor fault).
If you hear no click then it is most likely something of the above with bad connection, or your solenoid is faulting...
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When you turn the ignition switch ON and the start button doesn't do anything, are the headlight and instrument panels energized ?
Good thinking (partial credit) - they did but when I hit the starter button they didn't reset as normally happens when the starter is pressed.
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1.) Corrosion on the starter switch or ANY power/ground connections (check also your battery plus and minus connections!)
If you hear a "click" then your solenoid is working and the starter not turning (motor fault).
Good thinking (partial credit) - there was no clicking noise at all. Corrosion of the left brake lever switch was the root cause.
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Nice MrBios! There are just a few of you guys here that take the time to Post up these helpful step by step guides.
Kymco forum is a richer place because of you fellas.
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mrbios: So, I guess it did start with the right brake lever pulled?
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mrbios: So, I guess it did start with the right brake lever pulled?
Yes (but I had to connect the two wires together that normally connect to the brake light switch to complete the circuit (also the brake light came on where before I removed the switch the brake light would not come on unless I pressed the front brake lever.