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Home >> Cadillac >> 2024 >> LYRIQ Tech, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Data Communications - Diagnostic Information And Procedures (1 Of 5) >> Diagnostic Information and Procedures >> DTC B1A1B (K56 Serial Data Gateway Module) >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON/Vehicle In Service Mode.
  2. Verify that DTC U0073 - U007E, DTC U0100 - U02FF, or DTC U1600 - U17FF is not set.
    • Go to next step: If none of the DTCs are set 
  3. Refer to Circuit/System Testing.
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