FJR Top Gun
Join Date: Jul 2013
Location: near Great Salt Lake, Utah, USA, Sol III
Heated grips not working
Is the wire from the ECU showing power coming to the heated grips?
Do the the heated grips show the correct continuity readings at their plugs?
Is the ground wire well-connected to ground?
It may be possible that the ECU is not doing its' thing there, but that problem is not likely. Wire problems are the most likely, or maybe you have a bad grip. You need to measure those readings; looking usually will not see the problem. Each grip should show some resistance that you can measure with a Digital Multi-meter, across each grip and between the two (they are wired in series). IF the ECU really did fail there, you could power the grips with a pulse-width controller, which is the standard control gadget for most heated grips or heated clothing. The controller would be much cheaper than an ECU. A complete kit for heated grips with the controller would also be a cheaper option than buying one OEM replacement grip.
Keep us posted.
2008 FJR1300A - Pirelli Angel GT (Spec A) tires, RDL seat, TPMS, GPS digital speedometer (Amazon ~US$28.00).
P.S. Life is too short, and health is too valuable, to ride on cheap parade-duty tires.