Oxygen Sensor Heater Control - Mitsubishi 2013 Outlander Service Manual

OXYGEN SENSOR HEATER CONTROL

Oxygen sensor heater
When exhaust gas temperature is low, the oxygen
sensor response is dull. So, response is improved by
raising the sensor temperature by passing current
through the heater at a low exhaust gas temperature,
such as in the immediate aftermath of the engine
start, or during the warm up operation and in cutting
MULTIPOINT FUEL INJECTION (MPI)
OXYGEN SENSOR HEATER CONTROL
Engine control
relay
Battery
the fuel during deceleration. Based on driving condi-
tions and the oxygen sensor activation state,
engine-ECU changes the amount of current (duty
ratio) to the heater to quicken the activation of the
oxygen sensor.
Engine-ECU
Engine coolant
temperature sensor
13A-39
M2132007000734
AK602241AE