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Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> 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 Running the DTC

Conditions for Running 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 ignition voltage signal is valid, with the ignition in Run or Propulsion Mode.

U300D 24 

The control module ignition voltage signal is valid, with the ignition OFF.

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