Tracker 4x4 L4-1590cc 1.6L (1993)
Oxygen Sensor: Testing and Inspection
Oxygen Sensor Testing
H02S Test Chart
H02S Oxygen Sensor Circuit
CIRCUIT DESCRIPTION:
The heated oxygen sensor (H02S), produces a voltage that varies between .1 volt and .9 volt under normal operating conditions. The ECM monitors this
voltage and determines if the exhaust is lean or rich. If the voltage input at the ECM is about .1 volt, the exhaust is lean, and if the voltage input is about
