Endeavor 2WD V6-3.8L SOHC (2006)
Oxygen Sensor: Testing and Inspection
HEATED OXYGEN SENSOR CHECK
Required Special Tools:
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MB991958: Scan Tool (M.U.T.-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 (rear)>
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 [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 (31mph) 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: "L" range
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Drive with wide open throttle
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Engine: 3,500 r/min or more
Standard value
NOTE: If the sufficiently high temperature [of approximate 400 degrees C (752 degrees F) or more] is not reached although the heated oxygen