EG–320 ENGINE – SFI SYSTEM (2JZ–GTE) Ohmmeter +B HT P11993 3. INSPECT HEATER RESISTANCE OF MAIN HEATED OXYGEN SENSOR (a) Disconnect the oxygen sensor connector. (b) Using an ohmmeter, measure the resistance between the terminals +B and HT. Resistance: At 20˚C (68˚F) 11–16 Ω 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.