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Home >> Chevrolet >> 2002 >> Tracker 2D Utility, 4WD, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 2.0L >> Inspection/Maintenance Procedures >> Inspection/Maintenance EVAP System Set Procedure >> Diagnostic Procedures
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Diagnostic Procedures

  1. Did you perform the Inspection/Maintenance (I/M) System Check? If yes, go to next step. If no, go to INSPECTION/MAINTENANCE SYSTEM CHECK  under INSPECTION/MAINTENANCE PROCEDURES.
    NOTE: Once engine is started, DO NOT turn engine off for the remainder of the procedure until test is complete.
    WARNING: Road test a vehicle under safe conditions and while obeying all traffic laws. DO NOT attempt any maneuvers that could jeopardize vehicle control and could result in serious personal injury and vehicle damage.
  2. Ensure the vehicle is within the Conditions for Running. Turn OFF all of the accessories, e.g., A/C, blower fan, etc. Start the engine. Important: In order for this test to run, vehicle must operate in the following conditions: Operate engine until it reaches operating temperature of at least 158°F (70°C). This may be up to 8-10 minutes depending on the start up coolant temperature. Accelerate at part throttle to 35-55 MPH (56-89 km/h). Operate vehicle for 20 minutes at speeds of 35 MPH (56 km/h) or more. Operate vehicle for 3 minutes between 30-50 MPH (48-80 km/h) with the throttle position steady. Using scan tool, observe the I/M System Status display. Did the EVAP System Status update to YES? If yes, go to step  5 . If no, go to next step.
  3. Using scan tool, observe DTC Information. Does the scan tool indicate any failed DTCs? If yes, see DIAGNOSTIC TROUBLE CODE DEFINITIONS  . If no, go to next step.
    NOTE: Refer to INSPECTION/MAINTENANCE SYSTEM DTC TABLE  under INSPECTION/MAINTENANCE PROCEDURES to determine which DTCs are required to run in order to complete this test.
  4. Using scan tool, observe the NOT RAN SINCE CODE CLEARED display. Determine which of the DTCs required for a YES status has not run. Operate vehicle within the Conditions For Running DTC. Repeat procedure until scan tool indicates the diagnostic test has run. Repeat this step for any additional required DTCs that have not run. Using scan tool, observe I/M System Status display. Did the EVAP System Status update to YES? If yes, go to next step. If no, see DIAGNOSTIC AIDS  .
  5. Using scan tool, observe the emission related DTC portion of 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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