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Home >> Lexus >> 1999 >> GS 400 V8-4.0L (1UZ-FE) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Oxygen Sensor >> Testing and Inspection
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Oxygen Sensor: Testing and Inspection













COMPONENTS

INSPECTION



1. Bank1, 2 Sensor1:
INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR
a. Disconnect the oxygen sensor connector.
b. Using an ohmmeter, measure the resistance between terminals +B and HT
Resistance: 11 - 16 ohms at 20°C (68°F)
If the resistance is not as specified, replace the sensor.
Torque: 44 N.m (450 kgf.cm, 32 ft.lbf)
c. Reconnect the oxygen sensor connector.




2. Bank 1,2 Sensor 2:
INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR
a. Take out the floor carpet
b. Disconnect the oxygen sensor connector.
c. Using an ohmmeter, measure the resistance between terminals +B and HT.
Resistance: 11 - 16 ohms at 20°C (68°F)
If the resistance is not as specified, replace the sensor.
Torque: 44 N.m (450 kgf.cm, 32 ft.lbf)
d. Reconnect the oxygen sensor connector.
e. Install the floor carpet.

3. INSPECT OPERATION OF HEATED OXYGEN SENSOR




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