Supra Liftback L6-2997cc 3.0L DOHC MFI Twin-Turbo (1997)
Oxygen Sensor: Testing and Inspection
HEATED OXYGEN SENSOR INSPECTION
1. INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR
(BANK 1 SENSOR 1)
(a) Disconnect the oxygen sensor connector.
(b) Using an ohmmeter, measure the resistance between the terminals +B and HT.
Resistance: 11 - 16 Ohms at 20°C (68°F)
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.
2. INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR (BANK 1 SENSOR 2)
(a) Remove the driver's seat.
(b) Take out the console box side of the floor carpet.
(c) Disconnect the oxygen sensor connector.
(d) Using an ohmmeter, measure the resistance between the terminals +B and HT.
Resistance: 11 - 16 Ohms at 20°C (68°F)
If the resistance is not as specified, replace the sensor.
Torque: 20 N.m (200 kgf.cm, 14 ft.lbf)
(e) Reconnect the oxygen sensor connector.
(f) Reinstall the floor carpet.
(g) Reinstall the driver's seat.
