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9850064 R03 - 2021 650 / 850 Matryx Trail Performance / Crossover Snowmobile Service Manual
© Copyright Polaris Inc.
HOW DO YOU TROUBLESHOOT SMARTWARMERS?
Useful Tools for troubleshooting SmartWarmers
• Digital Wrench Version 4.2 12/9/2020 or newer
• Handlebar Harness de-pin tool, PF-52576 -> Shipped to all snowmobile dealers in October of 2020
• Quality Infrared Temperature Gun
Manually Measuring Heating Element Surface Temperature
To verify accurate and consistent SmartWarmers function, a quality infrared temperature gun can be used to compare
the user-defined set points to the actual heating element surface temperatures. Refer to the temperature gun’s user
guide for proper measuring techniques.
To audit the system: Turn on the SmartWarmers; the system will require about 30 seconds for the heating elements to
reach the defined temperature setting, at which point the infrared thermometer can be used to measure each
element’s surface temperature. The LH and RH grip heating elements should be equal to each other and match the set
temperature on the display ±2-3 degrees. The thumb heating element should be measured from the back of the throttle
lever (pointing the gun directly at the element surface) and match the display set value ±2-3 degrees.
NOTICE
The engine needs to be running for the heating elements to function.
If the temperature readings do not match, this could indicate faulty SmartWarmers calibration, heating elements, LHC,
or infrared thermometer. If the elements feel warm but do not reach the preset temperatures, the SmartWarmers
calibration procedure in Digital Wrench should be performed and the surface temperature can be re-measured.
Diagnostic Trouble Codes (DTCS)
SmartWarmers-equipped snowmobiles have been programed to monitor system functionality and display specific
Diagnostic Trouble Codes (DTCS) if errors are detected. An overview of each DTCS description, cause, and course of
action can be found in the 650/850 Matryx Trail Performance/Crossover service manual Chapter 10: Battery/Electrical
-> Electrical Harness -> Diagnostic Trouble Codes (DTCS) – Left Hand Control.
Heating Element Resistance Check
If the heating elements perform inconsistently or constantly trigger over-current errors, the element’s resistance should
be checked. Resistance values at room temperature can be found in the 650/850 Matryx Trail Performance/Crossover
service manual Chapter 10: Battery/Electrical -> Hand/Thumb Warmers. If the elements are found to be out of
specification, they should be replaced.
NOTICE
When troubleshooting the SmartWarmers system, it is best practice to perform the SmartWarmers calibration
procedure as a first attempt to resolve any issues.
BATTERY / ELECTRICAL
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