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Old July 12th, 2018, 03:20 PM   #35
DannoXYZ
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Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011

Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C

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MOTY - 2018, MOTM - Nov '17
Quote:
Originally Posted by InvisiBill View Post
Here's a walkthrough of how the starter relay circuit goes. You should be able to narrow down which part is bad just by seeing where you do and don't have 12V.
  1. White wire carries power from the Main fuse up to the keyswitch.
  2. When turned on, power goes out the brown wire to the fusebox.
  3. Then through the Ignition fuse and out the brown/black.
  4. That goes into the kill switch.
  5. Power goes out on the red wire and back into the starter button.
  6. Then out on the black/red and into Diode B.
  7. Out on the blue wire and into the starter circuit relay.
  8. Yellow/red is power out of the relay into the solenoid.
...
The starter circuit relay's coil grounds through the safety switches. If those aren't working properly, then the relay won't operate when the blue wire is powered. When it's "safe" the yellow/green wire at the relay should be grounded. If you're not getting ground there in neutral or with the sidestand up and the clutch pulled, you have a problem with the safety switches/circuits.
Yep, note that ground of starter-circuit relay's AND starter-solenoid activation coils are in boolen-logic and/or circuit involving diode-A, neutral-gear switch, kickstand switch and clutch-switch. Any one of those being incorrect will prevent the starter-circuit relay from activating and sending +12v to starter-solenoid and prevent starter-solenoid from activating even IF it received +12v..

Last futzed with by DannoXYZ; July 12th, 2018 at 07:44 PM.
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