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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (Wiring Systems And Power Management - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC U300D >> Conditions for Setting the DTC

Conditions for Setting the DTC

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.

U300D 23 

The control module detects 6 V or less on the ignition voltage circuit, with the Ignition ON.

U300D 24 

The control module detects greater than 6 V or greater on the ignition voltage circuit, with the Ignition OFF.

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