toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

Throttle Position Sensor > < Engine Controls - A/F And O2 Sensor Identification|Page 2418
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Oxygen Sensor: Testing and Inspection

INSPECTION

1. INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSORS

a. Disconnect the sensor connector

b. Using an ohmmeter, measure the resistance between terminals +B and HT.

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

Torque:
44 N.m (450 kgf.cm, 32 ft.lbf) for sensor 1
20 N.m (200 kgf.cm, 14 ft.lbf) for sensor 2

c. Reconnect the sensor connector.

2. INSPECT OPERATION OF HEATED OXYGEN SENSORS

Throttle Position Sensor > < Engine Controls - A/F And O2 Sensor Identification|Page 2418