Nissan and Datsun Workshop Service and Repair Manuals > 240SX Coupe L4-2.4L (KA24DE) (1997) > Powertrain Management | Sensors and Switches - Powertrain Management | Sensors and Switches - Computers and Control Systems | Oxygen Sensor | Component Information | Description and Operation | Front Heated Oxygen Sensor

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Oxygen Sensor: Description and Operation
Front Heated Oxygen Sensor Heater

SYSTEM DESCRIPTION

The ECM performs ON/OFF control of the front heated oxygen sensor heater corresponding to the engine conditions.

Engine Speed (rpm) / Front heated oxygen sensor heater
Above 4,400 / OFF
Below 4,400 / ON

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