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Home >> Chevrolet >> 2025 >> Traverse Z71 >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Keyless Entry System And Remote Functions >> Diagnostic Information and Procedures >> Key Card System Malfunction >> Circuit/System Verification
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Circuit/System Verification

    NOTE:

    In order to determine the best starting point to begin diagnosis first determine which features on the vehicle are functioning correctly or not. By performing a simple and quick check on the vehicle it can be determined if there is or isn't a fault in the feature.

  1. Ignition ON/Vehicle in Service Mode.
  2. Verify that DTC B1D3B or DTC B1EEF is not set.
    • Go to next step: If none of the DTCs are set 
  3. Vehicle OFF, approach the vehicle with one key card at a time. Ensure all other key cards and/or transmitters are at least 15 feet away from the vehicle.
  4. Verify the key card locks and unlocks the driver door when presented to the applique.
  5. Verify the key card allows vehicle to cycle power mode on within approximately one minute of tapping the key card on the applique.
    • If the vehicle either does not lock/unlock or does not change power modes 

      This function is failed, refer to Circuit/System Testing.

    • Go to next step: If the vehicle locks, unlocks, and allows vehicle power moding 
  6. All OK. This function Passed.