Montero V6-3.8L SOHC (2005)
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Be careful the heater is broken when voltage of beyond 12 volts is applied to the heated oxygen sensor heater.
NOTE: If the sufficiently high temperature [of approximate 400°C (752°F) or more] is not reached although the heated oxygen sensor is normal,
the output voltage would be possibly low although the rich air/fuel ratio. Therefore, if the output voltage is low, use a jumper wire to connect the
terminal No.1 (red clip of special tool) and the terminal No.3 (blue clip of special tool) of the heated oxygen sensor with the positive terminal and
the negative terminal of 12 volts power supply respectively, then check again.
3. If the sensor is defective, replace the heated oxygen sensor.
NOTE: For removal and installation of the heated oxygen sensor, refer to Exhaust Pipe and Main Muffler.
