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A/F Sensor Inspection

1.Connect the M-MDS to the DLC‐2.

2.Switch the ignition ON (engine on).

3.Warm up the engine to normal operating temperature.

4.Access the following PIDs using the M-MDS. (See PID/DATA MONITOR INSPECTION.)

― VSS (Vehicle speed)

― ENG_RPM (Engine speed)

― O2S_CUR (A/F sensor output current)

5.Drive the vehicle and decelerate the engine speed by releasing the accelerator pedal fully when the engine speed is 3,000 rpm or more.

6.Verify that the A/F sensor output current (PID: O2S_CUR) is 0.25 mA or more while decelerating as shown in the figure.

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• If not as specified, replace the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)

A/F Sensor Heater Inspection

Warning

• A hot engine and exhaust system can cause severe burns. Turn off the engine and wait until they are cool before removing the exhaust system.

Caution

• Do not allow flammable objects such as the taping for bundling a wiring harness to come into contact with the exhaust manifold and silencer.

1.Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(US)].)

2.Disconnect the A/F sensor connector. (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)

3.Measure the resistance between A/F sensor terminals A and E.

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• If not as specified, replace the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)