LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2002 >> Venture Plus >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics >> Inspection/Maintenance Procedures >> Inspection/Maintenance Heated Oxygen Sensor Heater System Set Procedure >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection/Maintenance Heated Oxygen Sensor Heater 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. NOTE: Whenever the ignition is turned ON, ignition positive voltage is supplied to the HO2S heaters.
  2. After verifying the enable criteria, turn OFF the ignition for approximately 5 minutes to allow the sensors to cool before continuing with the test. Preprogram the scan tool with the vehicle information before the ignition is turned ON. Ensure that the vehicle is operating within the Conditions for Running. Set the vehicle parking brake. Verify that the transmission is in Park for automatic transmissions and Neutral for manual transmissions. Turn OFF all of the accessories (e.g., A/C, blower fan, etc.). Start the engine and allow the engine to idle. Allow the engine to idle for 2 minutes or until the I/M System Status indicator updates to YES. Did the HO2S Heater System Status update to YES? If yes, go to step  5. If no, go to next step.
  3. 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.
  4. 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. 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 HO2S Heater System Status update to YES? If yes, go to next step. If no, see DIAGNOSTIC AIDS .
  5. 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.
scientia non olet · About LEMON Manuals