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sled down

stcatman

Well-known member
Premium Member
sled spent night out on mountain next day got it drug in and home , its in limp mode wont rev above 3,000 rpm showes code 1555 its not tss switch because it has 6.8 ohms ,starts every pull and idles good does have a boondocker agility but un hooked it from ecu
 
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How does it act when you give it throttle?
normal up to 3.000 rpm then stays there stuttering can let off throttle and back to normal idle , it also running on both cylinders with new plugs , it did it twice earlier in the day and I shut it off and restarted and it was normal but the 3rd time wouldn't come out of it and it spent the night on the mountain sled is a 21 850 axys
 
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PBR Power Boosting Regulator Technical Information

The PBR electrical system is a Serious, commercial grade power system.

The only AC power on a Matryx (any 650/850 Patriot) is on the 3 yellow stator wires, coming out of the engine, on the way to the Power Boosting Regulator.

The Power Boosting Regulator (PBR) takes 3 phase AC from the stator, converts it to DC power and regulates it into 3 major circuits:

16 Volts DC for the ECU,
fuel injectors, ignition coils, sensors and vehicle Communications Network (CAN)
... for 1.5 milliseconds, when opening the fuel injector, ECU steps up voltage to 22 Volts, then drops back to 16 volt
... ECU steps down to 5 Volts for sensor power

14 Volts DC Critical Circuit for fuel pump, oil pump and EVES Learn relay
.. E-VES II Learn Relay powers the E-VES II actuator, gauges, and external lights

14.4 Volts DC Chassis Circuit powers hand/thumb warmers, accessory DC power, driver & passenger seat warmers &
.. Battery Charge Relay powers battery charge circuit

2117587



The PBR, Power Boosting Regulator, provides DC power for all three circuits that power the sled and the engine. Nothing other than this device, handles AC 3 phase power (72VAC +-25% @5,000rpm) from the stator. It is programmable, and on the sled's CAN communications network, so it can have 2 way communications with: the ECU, the LHC (Left Hand Control), and the 7SDD or the Message Center Gauge. The software /firmware /programming on these devices, can all be updated with the latest version thru Digital Wrench or RideCommand (for 7SDD).
 
thanks, I haven't found anything electrical not working on it other than motor not reving up, I have not used a meter to check voltage on the circuits
 
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normal up to 3.000 rpm then stays there stuttering can let off throttle and back to normal idle , it also running on both cylinders with new plugs , it did it twice earlier in the day and I shut it off and restarted and it was normal but the 3rd time wouldn't come out of it and it spent the night on the mountain sled is a 21 850 axys
My 2020 850 exactly same symptons was the tps sensor cable at handle bar faulty....$30 fixed
 
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