Features, Detonation elimination technology (det) – Polaris 600 RUSH User 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

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