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Home >> Cadillac >> 2017 >> CTS Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 176 (Battery, Charging System And Starting System) >> Diagnostic Information and Procedures >> DTC P0621: Generator L-Terminal >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2016 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
  2. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

    • If the DTC does not set 
  3. All OK.
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