Index Snowmobiles / ATV Snowmobile Polaris DEEP SNOW (TRAIL RMK, 600 RMK, 700 RMK, 800 RMK, 900 RMK, 600 SWITCHBACK, 800 SWITCHBACK) - service manual 2005 year
|
|
ELECTRICAL 13.25 900 LIBERTYT DETONATION SENSOR (DET) A detonation sensor monitors the engine and responds to detonation by automatically reducing the engine timing and adding fuel. This sensor detects engine knock by converting pressure pulses from the engine and converting the pulses to a voltage. The ECU DET TROUBLESHOOTING Use this chart to determine causes and solutions for detonation. If none of these conditions exists and the sensor remains activated Possible Cause Solution Poor quality fuel Replace with higher quality fuel Improper engine modifications Do not modify the engine EFFECT OF DET Basic concept of the detonation system is to avoid damage to the engine from detonation while developing the maximum power of the engine safely. prevent engine damage. engine in a safe manner. SENSOR FAIL SAFE The Detonation Elimination Technology also includes a sensor fail--safe system to prevent the engine from damage, when the The rider will experience a loss in power. The sensor will need to be reconnected or repaired to once again achieve full power. Check engine light will flash 6 times if the sensor fails or becomes disconnected. The ECU will default the DET value to a set percentage and will monitor other sensors for reduced performance. |