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Home >> Cadillac >> 2006 >> STS V >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - 4.4L - Troubleshooting & Diagnosis >> Inspection/Maintenance (I/M) System Check >> Circuit/System Testing
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Circuit/System Testing

    IMPORTANT: Many DTC related repairs will instruct the technician to clear the DTC information. Clearing the DTC will reset the I/M System Status indicators to NO. Performing the I/M Complete System Set Procedure will set each of the I/M System Status indicators to YES.
  1. Observe the Engine DTC information with a scan tool.
  2. Review applicable service bulletins for software updates that would prevent the I/M System Status tests from completing.
  3. Observe the I/M System Status indicators.