Polaris 850 PRO-RMK 155 2020 Manual page 323

7. Start Digital Wrench, and select the appropriate
vehicle.
8. Select the Special Tools (Tool Box) menu and then
Service Procedures.
9. The next screen will prompt the user to select the
desired operation. Select: Exhaust Valve Learn.
10. The next screen will instruct the user to perform all
instructions and procedures exactly as described.
Click on Done/Continue.
9850060 R02 - 2020-2021 850 AXYS™ Long Track Snowmobile Service Manual
© Copyright Polaris Inc.
ENGINE / COOLING / EXHAUST
11. Digital Wrench will begin the learn procedure by
checking for faults. If the software determines there is
insufficient battery voltage to complete the process, it
is here when the software will stop and instruct the
user to charge the battery.
12. If no faults are encountered, and there is sufficient
battery voltage to proceed, the learn procedure will
commence.
NOTICE
The ECU will command the EV actuator relay to open
and close several times during the procedure. The
instrument cluster or PIDD will turn on and off each time
the relay is closed and opened. This is normal and
critical to the completing the learning procedure. The
actuator will also be heard moving back and forth as the
ECU sets the travel limits.
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