6 L4-2.5L (2010)
Oxygen Sensor: Testing and Inspection
Air Fuel Ratio (A/F) Sensor Inspection
AIR FUEL RATIO (A/F) SENSOR INSPECTION [L5]
A/F Sensor Current Inspection
1. Warm up the engine to normal operating temperature.
2. Using the M-MDS, monitor the following:
-
Vehicle speed (PID: VSS)
-
Engine speed (PID: RPM)
-
A/F sensor current (PID: O2S11)
3. Drive the vehicle and decelerate the engine speed by releasing the accelerator pedal fully when the engine speed is 3,000 rpm or more.
4. Verify that the A/F sensor current (PID: O2S11) is 0.25 mA or more while decelerating as shown in the figure.
-
If not within the specification, replace the A/F sensor. See: Service and Repair/Air Fuel Ratio (A/F) Sensor Removal/Installation
A/F Sensor Heater Resistance Inspection
1. Disconnect the A/F sensor connector.
2. Measure the resistance between A/F sensor terminals A and E.
-
If not as specification, replace the A/F sensor. See: Service and Repair/Air Fuel Ratio (A/F) Sensor Removal/Installation
A/F sensor heater resistance
-
1-10 ohms
