LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 213 (Engine Controls - Self-Diagnostics - 3.0L) >> Drive Cycles >> Inspection/Maintenance Heated Oxygen Sensor Heater 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 toINSPECTION/MAINTENANCE SYSTEM CHECK .
    2. NOTE: 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. In order for this test to run, vehicle must operate in the following conditions:
  2. Ensure vehicle is within the Conditions for Running. See CONDITIONS FOR RUNNING . Turn OFF all of the accessories, e.g., A/C, blower fan, etc. Start engine and allow it to idle for 2 minutes. Acceleration at part throttle to 45-55 MPH (75-90 km/h) with this speed maintained for 9 minutes or until the I/M System Status updates to YES. Manual transmissions, 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  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 to DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no, go to next step.
  4. Refer to INSPECTION/MAINTENANCE SYSTEM DTC TABLE  to determine which DTCs are required to run in order to complete this test. 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, in the diagnostic table of the affected DTC. Repeat the procedure until the scan tool indicates the diagnostic test has run. This may take up to 2 hours. Repeat steps 4-6 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, see DIAGNOSTIC 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 toDIAGNOSTIC TROUBLE CODE DEFINITIONS . If no, system is okay.
scientia non olet · About LEMON Manuals