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Inspection/Maintenance Heated Oxygen Sensor/Oxygen Sensor System Set Procedure: Procedure

  1. Perform INSPECTION/MAINTENANCE SYSTEM CHECK . After performing inspection/maintenance system check, go to next step.
    2. CAUTION: Road test vehicle under safe conditions and while obeying all traffic laws. Do not attempt any maneuvers that could jeopardize vehicle control. Failure to adhere to these precautions could lead to serious personal injury and vehicle damage.
  2. Verify vehicle is operating within Conditions for Running. Turn off all accessories. Start and idle engine. Accelerate at part throttle to 45-55 MPH. Maintain this speed for 6 minutes or until I/M SYSTEM STATUS updates to YES. M/T may require operation in 4th or 5th gear. Using scan tool, review I/M SYSTEM STATUS display. If HO2S SYSTEM STATUS update to YES, go to step  5. If HO2S SYSTEM STATUS does not update to YES, go to next step.
  3. Using scan tool, observe DTC information. If scan tool indicates any failed DTCs, see DIAGNOSTIC TROUBLE CODE INDEX  table under DIAGNOSTIC TROUBLE CODE DEFINITIONS. If scan tool does not indicate any failed DTCs, go to next step.
  4. Refer to DIAGNOSTIC TROUBLE CODE INDEX  to determine which DTCs are required to run in order to complete this test. Use the scan tool in order to observe the NOT RAN SINCE CODE CLEARED display. Determine which of the DTCs required for a YES status has not run. Enter the DTC number in the Specific DTC menu of the scan tool. Operate the vehicle within the CONDITIONS FOR RUNNING . Repeat the procedure until the scan tool indicates the diagnostic test has run. Repeat the procedure until the scan tool indicates the diagnostic test has run. Repeat for any additional required DTCs that have not run. Use a scan tool in order to observe the I/M System Status display. Did the HO2S/O2S System Status update to YES? If YES, go to next step. If NO, see DIAGNOSTIC AIDS .
  5. Using scan tool, check for DTCs. If scan tool indicates any DTCs are set, see DIAGNOSTIC TROUBLE CODE INDEX  table under DIAGNOSTIC TROUBLE CODE DEFINITIONS.
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