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Home >> Oldsmobile >> 2001 >> Intrigue GLS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Inspection/Maintenance Procedures >> Inspection/Maintenance Evaporative Emission System Set Procedure >> Diagnostic Procedure
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Diagnostic Procedure

  1. If I/M system check has been performed, go to next step. If I/M system check has not been performed, go to INSPECTION/MAINTENANCE SYSTEM CHECK .
  2. Using a scan tool, select SPECIAL FUNCTIONS. Determine if vehicle is equipped with a SERVICE BAY TEST for EVAP system. If vehicle equipped with EVAP SERVICE BAY TEST, go to next step. If vehicle is not equipped with EVAP SERVICE BAY TEST, go to step  5.
  3. Ensure vehicle is operating with conditions for running this procedure. See ENABLE CRITERIA . Turn off all accessories, including A/C and blower fan. Follow scan tool instructions and perform EVAP SERVICE BAY TEST. If EVAP system passed SERVICE BAY TEST, go to step  8. If EVAP system did not pass SERVICE BAY TEST, go to next step.
  4. Observe scan tool SERVICE BAY TEST for an indication of why test did not pass. Example, a failed DTC or test aborted. Refer to appropriate service information for diagnosis and repair of condition as necessary. After repairs, perform INSPECTION/MAINTENANCE COMPLETE SYSTEM SET PROCEDURE .
    5. NOTE: Once engine is started, DO NOT turn engine off for remainder of procedure until test is complete.
  5. Ensure vehicle is operating with conditions for running this procedure. See ENABLE CRITERIA . Turn off all accessories, including A/C and blower fan. Start engine and allow it to idle. Operate vehicle under the following conditions:
    • Accelerate at part throttle to 45 MPH. Maintain this speed until engine reaches normal operating temperature. This may take 8-10 minutes depending on start-up coolant temperature.
    • Continue the operating conditions for an additional 3 minutes after engine reaches normal operating temperature, or until I/M system status indicator updates to YES.

    If EVAP system status updates to YES, go to step  8. If EVAP system status does not update to YES, go to next step.

  6. Using scan tool, observe DTC information. If scan tool indicates any failed DTCs, perform appropriate diagnostic test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . If scan tool does not indicate any failed DTCs, go to next step.
  7. Using scan tool, observe NOT RAN SINCE CODE CLEARED display to determine if DTCs P0440, P0442, P0446 and P1441 have run. For those DTCs that have not run, operate vehicle under conditions to meet code enable criteria until DTC(s) runs. See CODE ENABLE CRITERIA under appropriate DTC under DIAGNOSTIC TESTS. Using scan tool, observe I/M system status display. If EVAP system status updated to YES, go to next step. If EVAP system status did not update to YES, see DIAGNOSTIC AIDS .
  8. Using scan tool, observe emission related DTC portion of I/M system status display. If scan tool indicates any emission related DTCs, perform appropriate diagnostic test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . If scan tool does not indicate any emission related DTCs, system is okay.
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