Eclipse V6-3.8L (6G75) (2006)
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Be careful the heater is broken when voltage of beyond 8V is applied to the oxygen sensor heater.
NOTE: If the sufficiently high temperature (of approximate 400 degrees C or more) is not reached although the 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 oxygen sensor with a (+) terminal and (-) terminal of 8 V power
supply respectively, then check again.
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.
<Right bank and left bank heated oxygen sensor (rear)>
1. Disconnect the heated oxygen sensor connector and connect special tool MB991316 to the connector on the heated oxygen sensor side.
2. Make sure that there is continuity [11 - 18 ohms at 20 degrees C (68 degrees F)] between terminal No. 1 (red clip) and terminal No. 3 (blue clip)
on the heated oxygen sensor connector.
3. If there is no continuity, replace the heated oxygen sensor.
4. Warm up the engine until engine coolant is 80 degrees C (176 degrees F) or higher.
5. Drive at 50 km/h (31 mph) or more for 10 minutes.
6. Connect a digital voltage meter between terminal No. 2 (black clip) and terminal No. 4 (white clip).
7. Measure the output voltage of the heated oxygen sensor under the following driving.
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Transaxle: 2nd speed (A/T: "L" range)
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Drive with wide open throttle
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Engine: 3,500 r/min or more
8. If the output voltage is not within the standard value, replace the heated oxygen sensor.
NOTE: If the sufficiently high temperature (of approximate 400 degrees C or more) is not reached although the oxygen sensor is normal, the output