Det Troubleshooting - Polaris 340 Edge Touring Owner's Manual

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
(✪) will flash. The activated sensor
reduces engine detonation by retarding
the ignition timing. This results in
decreased engine RPM and perfor-
mance.

DET 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 for diagnosis.
Possible Cause
Poor quality fuel
Improper engine modifications
Incorrect jetting
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
3 flashes of 1 second each
Solid 3-second flash, off 1
second, repeats until engine
is shut down
Solid non-blinking light
Replace with higher quality fuel
Do not modify the engine
Use the correct jetting for your altitude
Cause
Detonation See DET Troubleshooting Chart
Faulty sensor See your Polaris dealer
High water See your Polaris dealer. NOTE:
temperature If temporary operation is
unavoidable, drive slowly and
stop the engine frequently to
allow the engine to cool.
FEATURES
Solution
Action
✪
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