Polaris 850 MATRYX INDY XC 129 2021 Manual page 329

ENGINE ELECTRICAL
Slowly move the throttle lever in and out. The return
signal line should change without any erratic jumps or
gaps.
4
If erratic jumps or gaps are encountered, inspect the
wiring, and connector pins at the sensor and ECU
connector.
If the signal return is erratic and no wiring issues are
found and the TPS is securely mounted to the throttle
body, replace the TPS.
9850064 R03 - 2021 650 / 850 Matryx Trail Performance / Crossover Snowmobile Service Manual
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