Outlander AWD L4-2.4L (4B12) (2010)
Oxygen Sensor: Testing and Inspection
Heated Oxygen Sensor Check
HEATED OXYGEN SENSOR CHECK
Required Special Tool:
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MB991658: Test Harness
Heated oxygen sensor (front) [Except for California]
1. Disconnect the heated oxygen sensor connector and connect special tool MB991658 to the connector on the heated oxygen sensor side.
2. Measure the resistance between terminal No. 1 and terminal No. 2.
Standard value: 4.5 - 8.0 ohms [at 20 °C (68 °F)]
3. If the resistance deviates from standard value, replace the heated oxygen sensor.
4. Warm up the engine until engine coolant is 80 °C (176 °F) or higher.
5. Rev the engine for 5 minutes or more with the engine speed of 2,000 r/min.
6. Connect a digital voltage meter between terminal No. 3 and terminal No. 4.
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.
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Be careful the heater is broken when voltage of beyond 8 V is applied to the oxygen sensor heater.