Features and controls, Detonation elimination technology (d.e.t.), D.e.t. troubleshooting – Polaris 800 Pro X User Manual

Page 33: D.e.t. flash signals

FEATURES AND CONTROLS

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 (A) will flash

in the lower right-hand area of the

tachometer. The activated sensor reduces

engine detonation by retarding the

ignition timing. This results in decreased

engine RPM and performance.

D.E.T. 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.

Possible Cause

Solution

Poor quality fuel

Replace with higher quality fuel

Improper jetting

Verify and adjust per jetting chart

Improper engine modifications

Do not modify the engine

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

Cause

Action

3 flashes of 1 second

each

Detonation

See DET Troubleshooting Chart

Solid 3-second flash, off

1 second, repeats until

engine is shut down

Faulty sensor

See your Polaris dealer

Solid non-blinking light

High water tem-

perature

See your Polaris dealer. NOTE: If tempo-

rary operation is unavoidable, drive slowly

and stop the engine frequently to allow the

engine to cool.