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Features, Detonation elimination technology (d.e.t.) – Polaris 700 Fusion User Manual

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FEATURES

Detonation Elimination Technology (D.E.T.)

A detonation sensor monitors the engine and responds to detonation by

automatically reducing the engine timing and adding fuel. This results

in decreased engine RPM and performance.

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

Solution

Poor quality fuel

Replace with higher quality fuel

Improper engine modifications

Do not modify the engine

Effect of DET

The DET system prevents damage to the engine from detonation while

developing the maximum power of the engine safely. If the system

senses detonation beyond a preset limit, it retards ignition timing and

adds fuel to reduce the detonation and prevent engine damage.
When the detonation returns to a permissible level, the system will

return spark and fuel to normal, allowing the engine to run at rated

power levels.

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 in power. The sensor must

be reconnected or repaired to regain full power.

NOTE: The check engine light will flash six times if the sensor fails

or becomes disconnected.

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