Lancer L4-2.4L SOHC (2005)
2. While repeatedly revving the engine, measure the heated oxygen sensor output voltage.
CAUTION:
-
Be very careful when connecting the jumper wire; incorrect connection can damage the heated oxygen sensor.
-
Be careful the heater is broken when voltage of beyond 8 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 jumper wires to connect the
terminal No.4 and the terminal No.3 of the heated oxygen sensor with a (+) terminal and (-) terminal of 8 volts power supply respectively, then
check again.
3. If the output voltage is not within the standard value, replace the heated oxygen sensor.
NOTE: For removal and installation of the heated oxygen sensor, refer to Exhaust Pipe and Main Muffler <EXCEPT FOR CALIFORNIA>, refer
to Emission Control - Catalytic Converter - Removal and Installation <VEHICLES FOR CALIFORNIA>.
