LEMON Manuals: Even more car manuals for everyone
Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 191 (Data Communications - Diagnostic Information And Procedures (3 Of 3)) >> Diagnostic Information and Procedures >> DTC U3000 >> Circuit/System Verification

Circuit/System Verification

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.
NOTE:

The diagnostic procedure for DTC U3000 in Data Communications category is not applicable to all CAN modules. Refer to Diagnostic Trouble Code (DTC) List - Vehicle to check if a separate diagnostic procedure is available for the CAN module setting DTC U3000 and follow that diagnostic procedure. If a separate diagnostic procedure is not available for the CAN module setting DTC U3000, proceed to the verification steps below.

  1. Ignition ON/Vehicle In Service Mode, engine OFF.
  2. Verify DTC U3000 is not set.
    • If DTC U3000 is set with symptom byte 51, 52, 53, 54, 55, 56, or 57 
    1. Perform all necessary programming and setup procedures for the control module that sets the DTC.
    2. Verify the DTC does not set.
      • If the DTC sets, replace the control module that sets the DTC.
      • Go to next step: If the DTC does not set
    3. All OK.
    • If DTC U3000 is set with any symptom byte, except 51, 52, 53, 54, 55, 56, or 57 

      Replace the control module that sets the DTC.

    • Go to next step: If DTC U3000 is not set 
  3. All OK
scientia non olet · About LEMON Manuals