4 Runner Limited 2WD V6-3.4L (5VZ-FE) (1997)
Oxygen Sensor: Component Tests and General Diagnostics
INSPECTION
(Bank 1 Sensor 1, Bank 1 Sensor 2)
INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSORS
(a) Disconnect the oxygen sensor connector.
Bank 1 Sensor 1
Bank 1 Sensor 2
(b) Using an ohmmeter, measure the resistance between the terminals +B and HT.
Resistance: At 20°C (68°F): 11 - 16 ohm
If the resistance is not as specified, replace the sensor.
Torque: 20 N.m (200 kgf.cm, 14 ft.lbf)
(c) Reconnect the oxygen sensor connector.