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Linear Air-Fuel Ratio Sensor Check
LINEAR AIR-FUEL RATIO SENSOR CHECK 1.
Disconnect the linear air-fuel ratio sensor connector and connect special tool MB991658 to the connector on the linear air-fuel ratio sensor side.
2.
Measure the resistance between terminal No. 2 and terminal No. 3.
Standard value: 2.3 - 4.2 ohms [at 20 °C (68 °F)]
3.
If the resistance deviates from standard value, replace the linear air-fuel ratio sensor.