Lancer Evolution L4-2.0L Turbo (4B11T/C) (2010)
6. Connect a digital voltage meter between terminal No. 3 and terminal No. 4.
7. Measure the output voltage of the heated oxygen sensor under the following driving.
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Transaxle: 2nd
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Drive with wide open throttle
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Engine: 3,500 r/min or more
Standard Value
NOTE:
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If the temperature of sensing area does not reach the high temperature [of approximately 400° C (752° F) or more] even though the oxygen
sensor is normal, the output voltage would be possibly low in spite of the rich air-fuel ratio.
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When the vehicle is driven with high loads, the temperature of the sensing area of the oxygen sensor is sufficiently high. Thus, it is not
necessary to apply the voltage to the heater.
8. 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 - Removal and installation.