Testing Heater With Ohmmeter

1. Disconnect the heated oxygen sensor connector.
2. Measure the resistance between heated oxygen sensor (front) terminals B and C or between heated oxygen sensor (rear) terminals C and D by using an ohmmeter.

Specification
Approx. 6 Ohm [20°C {68°F}]

3. If not as specified, replace the heated oxygen sensor.

Tightening torque
30 - 49 N.m {3.0 - 5.0 kgf.m, 22 - 36 ft.lbf}