LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 330 (Engine Controls - Self-Diagnostics - 3.0L) >> Drive Cycles >> Inspection/Maintenance Heated Oxygen Sensor/Oxygen Sensor System Set Procedure >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  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. 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 allow it to idle for one minute. In order for this test to run, vehicle must operate in the following conditions: Accelerate at part throttle to 45-55 MPH (75-90 km/h) with this speed maintained for 7 minutes or until the I/M System Status updates to YES. On M/T, either 5 or 6-speed, may require operation in 4th or 5th gear respectively, in order for this test to run. Review the I/M System Status display with a scan tool. Did the HO2S/O2S System Status update to YES? If yes, go to step  5. If no, go to next step.
  3. Observe the DTC Information with a scan tool. Does the scan tool indicate any failed DTCs? If yes, go toDIAGNOSTIC TROUBLE CODE DEFINITIONS . If no, go to next step.
  4. Refer to the Inspection/Maintenance (I/M) System DTC Table to determine which DTCs are required to run in order to complete this test. See INSPECTION/MAINTENANCE SYSTEM DTC TABLE . Observe the Not Ran Since Code Cleared display with a scan tool. 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 vehicle within the Conditions for Running the DTC on the corresponding DTC. Repeat this procedure until the scan tool indicates the diagnostic test has run. Repeat this step for any additional required DTCs that have not run. Observe the I/M System Status display with a scan tool. Did the HO2S/O2S System Status update to YES? If yes, go to next step. If no, go toDIAGNOSTIC AIDS .
  5. Observe the Emission Related DTC portion of the I/M System Status display with a scan tool. Does the scan tool indicate any emission related DTCs set? If yes, go to DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no, system is okay.
scientia non olet · About LEMON Manuals