Polaris 600 RUSH - Manual (Page 31)

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FEATURES
Detonation Elimination Technology (DET)
The DET system prevents damage to the engine from detonation by
going into an engine protection mode whenever the DET system is
active. Depending on the level of detonation encountered, the check
engine light could be solid, it could flicker or it could flash steadily.
When excessive detonation is detected,
the check engine light will come on solid,
or it may flicker, and you may notice
decreased engine performance and RPM
when the DET system is activated. In
most cases this is temporary and the oper-
ator does not need to take any action. The
engine will return to its normal perfor-
mance automatically.
If severe detonation occurs, the check engine light will begin to flash
steadily and the gauge indicator will read “dET” (see illustration). The
engine will enter a limp home mode and RPM will be limited to 6500
RPM. The engine will remain in this mode until it is shut down and
restarted.
The most likely causes of severe detonation are outlined in the trouble-
shooting table below.
DET Troubleshooting
Check Engine Light Indicates
Off Mild detonation may be detected
Solid or Flickering Excessive detonation detected
Steady Flashing Severe detonation detected, RPM will be limited
Cause of DET Activation Solution
Poor quality fuel Replace with higher quality fuel
Incorrect ethanol/non-ethanol fuel
resistor installed
Verify correct fuel resistor for fuel type
in tank
Low fuel/no fuel in tank Refuel with recommended fuel
Water in fuel Replace with recommended fuel
Plugged fuel filter See your Polaris dealer for service
Alcohol-based fuel additive used with
Ethanol fuel
Do not add deicers or additives that
contain any form of alcohol while
using up to 10% ethanol fuel
Improper engine modifications Do not modify the engine