Air/Fuel Ratio Sensor

Air-Fuel Ratio (A/F) Sensor:

COMPONENTS




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

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

If the resistance is not as specified, replace the sensor.
Torque: 20 Nm (200 kg.cm, 14 ft.lb)

c. Connect the sensor connector.

2. INSPECT OPERATION OF A/F SENSOR