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Air/Fuel Ratio Sensor

AIR-FUEL RATIO (A/F) SENSOR (California)

INSPECTION

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)

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

Torque: 44 Nm (450 kg cm, 32 ft.lb)

c. Reconnect the A/F sensor connector.

2. INSPECT OPERATION OF A/F SENSOR