Oxygen Sensor: Testing and Inspection
INSPECTION1. Bank 1, 2 Sensor 1:
INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR
a. Disconnect the oxygen sensor connector.
b. Using an ohmmeter, measure the resistance between terminals +B and HT.
Resistance: 11 - 16 Ohm at 20 °C (68 °F)
If the resistance is not as specified, replace the sensor.
Torque: 44 N.m (450 kgf.cm, 32 ft.lbf)
c. Reconnect the oxygen sensor connector.
2. Bank 1, 2 Sensor 2:
INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR
a. Take out the floor carpet.
b. Disconnect the oxygen sensor connector.
c. Using an ohmmeter, measure the resistance between terminals +B and HT.
Resistance: 11 - 16 Ohm at 20 °C (68 °F)
If the resistance is not as specified, replace the sensor.
Torque: 44 N.m (450 kgf.cm, 32 ft.lbf)
d. Reconnect the oxygen sensor connector.
e. Install the floor carpet.
3. INSPECT OPERATION OF HEATED OXYGEN SENSOR