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Home >> Toyota >> 2002 >> Corolla LE Sedan L4-1.8L (1ZZ-FE) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Oxygen Sensor >> Testing and Inspection
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Oxygen Sensor: Testing and Inspection

HEATED OXYGEN SENSOR

INSPECTION




1. Bank 1 Sensor 1:
INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR
a. Disconnect the sensor connector.
b. Using an ohmmeter, measure the resistance between terminals +B and HT.




If the resistance is not as specified, replace the sensor.

Torque: 44 N.m (450 kgf.cm, 31 ft.lbf)

c. Reconnect the sensor connector.




2. Bank 1 Sensor 2:
INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR
a. Remove the passenger's seat.
b. Take out the floor carpet.
c. Disconnect the sensor connector.
d. Using an ohmmeter, measure the resistance between terminals +B and HT.




If the resistance is not as specified, replace the sensor.

Torque: 44 N.m (450 kgf.cm, 31 ft.lbf)

e. Reconnect the sensor connector.
f. Reinstall the floor carpet.
g. Reinstall the passenger's seat.
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