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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
