2008 Polaris 600 IQ LX Owners Manual - Page 36

Detonation Elimination Technology (DET) FEATURES The DET system prevents damage to the engine from detonation by automatically reducing the engine timing and adding fuel whenever the sensors detect detonation. You may notice decreased engine RPM and performance when DET is activated, but in most cases DET activation is temporary, and the timing will return to normal automatically. In extreme conditions the DET system retards timing and holds it in a retarded state. If this occurs, replace the fuel with recommended fuel or see your Polaris dealer for service. Cause of DET Activation Poor quality fuel Improper engine modifications Solution Replace with higher quality fuel Do not modify the engine Sensor Fail-Safe The DET includes a sensor fail-safe system to prevent the engine from damage if the sensor fails, becomes disconnected or is unable to detect detonation. The rider will experience a loss of power. The sensor must be reconnected or repaired to regain full power. See your Polaris dealer for service if this occurs. NOTE: The check engine light will flash six times if the sensor fails or becomes disconnected. 33