Highlander LTD 2WD V6-3.0L (1MZ-FE) (2002)
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Oxygen Sensor: Testing and Inspection
INSPECT HEATER RESISTANCE OF A/F SENSORS
a. Disconnect the A/F sensor connector.
b. Using an ohmmeter, measure the resistance between the terminals +B and HT.
Resistance:
0.8 - 1.4 (Ohm) at 20 °C (68 °F)
1.8 - 3.2 (Ohm) at 800 °C (1,472 °F)
If the resistance is not as specified, replace the sensor.
c. Reconnect the A/F sensor connector.
INSPECT HEATER RESISTANCE OF OXYGEN SENSOR
a. Disconnect the oxygen sensor connector.
b. Using an ohmmeter, measure the resistance between the terminals +B and HT
Resistance: 11 - 16 (Ohm) at 20 °C (68 °F)
If the resistance is not as specified, replace the sensor.
c. Reconnect the oxygen sensor connector.
