Air/Fuel Ratio Sensor

1. INSPECT HEATER RESISTANCE OF A/F SENSOR
a. Disconnect the A/F sensor connector.
b. Using an ohmmeter, measure the resistance between terminals +B and HT

Resistance:
- 0.8 - 1.4 Ohms at 20 °C (68 °F)
- 1.8 - 3.2 Ohms at 800 °C (1,472 °F)

If the resistance is not as specified, replace the sensor.

Torque: 20 Nm (200 kg.cm, 14 ft.lb)

c. Reconnect the A/F sensor connector.

2. INSPECT OPERATION OF A/F SENSOR