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Home >> Chevrolet >> 2003 >> Tracker 2D Utility, 4WD, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Control System Self-Diagnostics - 2.5L) >> Drive Cycles >> Inspection/Maintenance EGR System Set Procedure >> Diagnostic Procedures
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Diagnostic Procedures

WARNING: This page is about a different variant/trim than selected.
  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  .
    2. 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 vehicle is within the Conditions for Running. See CONDITIONS FOR RUNNING  . Turn off all accessories, e.g., A/C, blower fan, etc. Start engine and warm to operating temperature of at least 158°F (70°C). This may be up to 8-10 minutes depending on the start up coolant temperature. Important: In order for this test to run, the vehicle must operate in the following conditions: Accelerate at part throttle to 30-40 MPH (50-65 km/h) with speed maintained for 3 minutes. With a scan tool, observe the I/M System Status display. Did the EGR 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 DTCS  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 the DTC. See CONDITIONS FOR RUNNING  . Repeat procedure until scan tool indicates the diagnostic test has run or for any additional required DTCs that have not run. Using scan tool, observe the I/M System Status display. Did the EGR System Status update to YES? If yes, go to next step. If no, go to 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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