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FEATURES AND CONTROLS
Detonation Elimination Technology (D.E.T.)
Some Polaris snowmobiles are equipped with a
detonation sensor that monitors the engine and
responds to detonation by automatically reducing
the engine timing. When activated, the
“DETONATION FLASH” indicator (A) will flash
in the lower right-hand area of the
tachometer. The activated sensor reduces
engine detonation by retarding the
ignition timing. This results in decreased
engine RPM and performance.
D.E.T. Troubleshooting
Use this chart to determine causes and solutions for detonation. If
none of these conditions exists and the sensor remains activated, see
your Polaris dealer.
Possible Cause
Solution
Poor quality fuel
Replace with higher quality fuel
Improper jetting
Verify and adjust per jetting chart
Improper engine modifications
Do not modify the engine
D.E.T. Flash Signals
Use this chart to determine the meaning and course of action for each
D.E.T. flash signal.
Type of Flash
Cause
Action
3 flashes of 1 second
each
Detonation
See DET Troubleshooting Chart
Solid 3-second flash, off
1 second, repeats until
engine is shut down
Faulty sensor
See your Polaris dealer
Solid non-blinking light
High water tem-
perature
See your Polaris dealer.
NOTE:
If tempo-
rary operation is unavoidable, drive slowly
and stop the engine frequently to allow the
engine to cool.
A
