Operation CHARM: Car repair manuals for everyone.

Component Inspection

INSPECTION

1. 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 to 16 ohms at 20 degree C (68 degree 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. INSPECT OPERATION OF HEATED OXYGEN SENSOR