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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 121 (Engine Controls And Fuel - 2.0L (LSY) - Diagnostic Information And Procedures (3 Of 3)) >> Diagnostic Information and Procedures >> Inspection/Maintenance System Check >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.

For an overview of the component/system, refer to: Inspection/Maintenance Description and Operation

Several states require vehicles to pass the inspection/maintenance (I/M) emission inspection in order to renew the vehicle's license plate.

This diagnostic verifies the vehicle is I/M ready by confirming the I/M System Status monitors are Complete and that no Permanent DTCs are set.

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