2011 Arctic Cat Prowler XT/XTX/XTZ ATV/ROV Service Manual, Page 159Get this manual
The ECU is rarely the cause for electrical problems; however, if the ECU is suspected, substitute another ECU to verify the suspected one is defectiveThis EFI system has built-in feature that will only allow an ECU of the same part number to be used in this modelDo not attempt to substitute an ECU from different model as the system will not allow it to startError codes can be cleared by following the procedures located in the ECU Error Codes sub-section in this section PR296
RegulatorRectifier
The regulatorrectifier is located under the operator's seat next to the batteryTry to verify all other charging system components before the regulatorrectifier is replaced
NOTE: Make sure the ignition switch is in the ON position, transmission in neutral, and parking brake set
3Depress the starter button while observing the multimeterThe multimeter should drop to volts and "click" should be heard from the relayNOTE: If "click" is heard and more than one volt is indicated by the multimeter, replace the starter relayIf no "click" is heard and the multimeter continues to indicate battery voltage, proceed to step 4