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Inspection/Maintenance Evaporative Emission System Set Procedure: Procedure

  1. Did you perform the Inspection/Maintenance (I/M) System Check? If yes, go to next step. If no, see INSPECTION/MAINTENANCE SYSTEM CHECK .
  2. Using a scan tool, select Special Functions. Determine if the vehicle is equipped with a Service Bay Test for the EVAP System. Is the vehicle equipped with EVAP Service Bay Test? If yes, go to next step. If no, go to step  5.
  3. Ensure that the vehicle is within the Conditions for Running specified in the supporting text. Turn OFF all of the accessories (e.g., A/C, blower fan, etc.). Following the directions on the scan tool, perform the EVAP Service Bay Test. Did the EVAP System pass the Service Bay Test? If yes, go to step  8. If no, go to next step.
  4. Observe the scan tool Service Bay Test for an indication of why the test did not pass (e.g., failed DTC, test aborted, etc.). Refer to the appropriate service information for diagnosis and repair of the condition as necessary. Is the repair complete? If yes, see INSPECTION/MAINTENANCE COMPLETE SYSTEM SET PROCEDURE .
    5. WARNING: Road test a 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.
    NOTE: Once the engine is started, DO NOT turn the engine OFF for the remainder of the procedure until the test is complete.
  5. Ensure that the vehicle is within the Conditions for Running specified in the supporting text. Turn OFF all of the accessories (e.g., A/C, blower fan, etc.). Start the engine and idle. To run this test, the vehicle must operate in the following conditions:
    • Acceleration at part throttle to 45 MPH with this speed maintained until the engine reaches operating temperature. This may be up to 8-10 minutes depending on the start up coolant temperature.
    • Continue the operating conditions for an additional 3 minutes after the engine reaches operating temperature, or until the I/M System Status indicator updates to YES.

    Did the EVAP System Status update to YES? If yes, go to step  8. If no, go to next step.

  6. With a scan tool, observe the DTC Information. Does the scan tool indicate any failed DTCs? If yes, see DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no, go to next step.
  7. To determine which DTCs are required to run in order to complete this test, see INSPECTION/MAINTENANCE SYSTEM DTCS  table. With a scan tool, 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 DTC. Repeat the procedure until the scan tool indicates the diagnostic test has run. Repeat this procedure for any additional required DTCs that have not run. With a scan tool, observe the I/M System Status display. Did the EVAP System Status update to YES? If yes, go to next step. If no, see DIAGNOSTIC AIDS .
  8. With a scan tool, 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, see DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no, system is okay.
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