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Home >> Cadillac >> 2019 >> XTS Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 53 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> DTC B1446 or B1447 >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2018 Cadillac XTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify DTC B1446/B1447 is not set.
    • If DTC B1446/B1447 is set 

      Test or replace the C3 Telematics Communication Interface Control Module Battery.

    1. Verify DTC B1446/B1447 is not set.
      • If DTC B1446/B1447 is set

        Test or replace the K73 Telematics Communication Interface Control Module

      • Go to next step: If DTC B1446/B1447 is not set.

        Go to next step: All OK.

    • Go to next step: If DTC B1446/B1447 is not set 
  2. All OK.
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