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Home >> Chevrolet >> 2021 >> Traverse L >> Repair and Diagnosis >> Accessories & Equipment >> Entertainment Systems >> Cellular, Entertainment, And Navigation System >> Diagnostic Information and Procedures >> DTC B248A >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the coax cable connector at the T4T Wireless Communication Antenna - WLAN and at the A11 Radio.
  2. Verify the coax cable passes the coax cable component test. Refer to Component Testing.
    • If the coax cable does not pass the test 

      Replace the coax cable

    • Go to next step: If the coax cable passes the test 
  3. Test or replace the T4T Wireless Communication Antenna - WLAN.
  4. Verify DTC B248A is not set.
    • If DTC B248A is set 

      Replace the A11 Radio.

    • Go to next step: If DTC B248A is not set 
  5. All OK.
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