Tundra Access Cab LTD 4WD V8-4.7L (2UZ-FE) (2001)
Oxygen Sensor: Testing and Inspection
HEATED OXYGEN SENSOR
INSPECTION
1. INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSORS
a. Disconnect the oxygen sensor connector.
Resistance
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, 32 ft.lbf) for sensor 1
20 N.m (200 kgf.cm, 14 ft.lbf) for sensor 2
c. Reconnect the oxygen sensor connector.
2. INSPECT OPERATION OF HEATED OXYGEN SENSORS