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Inspection/Maintenance Catalyst 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. Ensure vehicle is operating within Conditions for Running. Turn all accessories off. Start engine and allow to idle. Operate vehicle in the following manor:
    • Accelerate at part throttle to 55 MPH and maintain speed for 5 minutes.
    • Decelerate to zero MPH and allow engine to idle for 2 minutes while service brake is depressed, A/T in Drive and M/T in Neutral with clutch pedal depressed.

    Using scan tool, monitor I/M SYSTEM STATUS. If CATALYST SYSTEM STATUS is YES, go to step  5. If CATALYST SYSTEM STATUS is not 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 INSPECTION/MAINTENANCE SYSTEM DTCS  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 CONDITIONS FOR RUNNING . Repeat the procedure until the scan tool indicates the diagnostic test has run. Repeat for any additional required DTCs that have not run. Use the scan tool in order to observe the I/M System Status Display. Did the catalyst system status update to YES? If YES, go to next step. If NO, see DIAGNOSTIC AIDS .
  5. Use a scan tool, in order to observe the Emission Related DTC portion of the I/M System Status display. Does the scan tool indicate any Emission Related DTCs set? If YES, seeDIAGNOSTIC TROUBLE CODE DEFINITIONS . If NO, system is okay.
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