Titan 4WD V8-5.6L (VK56DE) (2006)
Oxygen Sensor: Description and Operation
A/F SENSOR 1 HEATER
Description
SYSTEM DESCRIPTION
The ECM performs ON/OFF duty control of the A/F sensor 1 heater corresponding to the engine operating condition to keep the temperature of A/F
sensor 1 element at the specified range.
HO2S2 HEATER
Description
SYSTEM DESCRIPTION
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
A/F SENSOR 1
Component Description
The air fuel ratio (A/F) sensor 1 is a planar dual-cell limit current sensor. The sensor element of the A/F sensor 1 is the combination of a Nernst