A/F Sensor Inspection

WARNING: This page is about a different variant/trim than selected.

Warm up the engine to normal operating temperature.
Drive the vehicle.
Release the accelerator pedal while the engine speed is at 3,000 rpm or more and verify that the following monitor items fluctuate as shown in the figure while the vehicle decelerates. (See ON-BOARD DIAGNOSTIC TEST .)

Fig 1: Air Fuel Ratio (A/F) Sensor Graph For Speed
- VSS
- RPM
- O2S11, O2S21
  - If not within the specification, replace the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION .)