Eclipse V6-3.8L (6G75) (2006)
Oxygen Sensor: Testing and Inspection
HEATED OXYGEN SENSOR CHECK
Required Special Tools:
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MB991958: Scan tool (MUT-III Sub Assembly)
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MB991824: V.C.I.
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MB991827: USB Cable
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MB991910: Main Harness A
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MB991316: Test Harness
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MD998464: Test Harness
<Right bank and left bank heated oxygen sensor (front)>
1. Disconnect the heated oxygen sensor connector and connect special tool MD998464 to the connector on the heated oxygen sensor side.
2. Make sure that there is continuity [4.5 - 8.0 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. Rev the engine for 5 minutes or more with the engine speed of 4,500 r/min.
6. Connect a digital voltage meter between terminal No. 2 (black clip) and terminal No. 4 (white clip).
7. While repeatedly revving the engine, measure the heated oxygen sensor output voltage.
CAUTION
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Be very careful when connecting the jumper wire; incorrect connection can damage the oxygen sensor.