 SYSTEM DESCRIPTION
Sensor
|
Input signal to ECM
|
ECM function
|
Actuator
|
Camshaft position sensor (PHASE) Crankshaft position sensor (POS)
|
Engine speed
|
Heated oxygen sensor 2 heater control
|
Heated oxygen sensor 2 heater
|
Engine coolant temperature sensor
|
Engine coolant temperature
|
Mass air flow sensor
|
Amount of intake air
|
The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed, amount of intake air and engine coolant temperature.
 OPERATION
Engine speed
|
Heated oxygen sensor 2 heater
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Above 3,600 rpm
|
OFF
|
Below 3,600 rpm after the following conditions are met.
- Engine: After warming up
- Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load
|
ON
|
|