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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Cellular System, Entertainment System And Navigation System >> Diagnostic Information and Procedures >> DTC B2470: Cellular Phone Antenna Circuit >> Circuit/System Testing >> Without Navigation Radio

Without Navigation Radio

  1. Ignition OFF and all vehicle systems OFF, disconnect the GPS and cellular coax cable connector at the K73 Telematics Communication Interface Control Module. It may take up to 2 min for all vehicle systems to power down.
  2. Using the EL-49903-3 kit (EL-49903-5 adapter and EL-49903-4 coax cable), connect the EL-49903  GM OnStar® antenna diagnostic tool kit to the K73 Telematics Communication Interface Control Module. Place the test antenna on the roof of the vehicle, ignition ON.
  3. Verify the DTC does not set while operating the vehicle within the conditions for running the DTC.
    • If the DTC sets 

      Replace the K73 Telematics Communications Interface Control Module.

    • If the DTC does not set 
  4. Ignition OFF.
  5. Disconnect the EL-49903  GM OnStar® antenna diagnostic tool kit from the K73 Telematics Communication Interface Control Module
  6. Test the coax cable. Refer to Component Testing .
    • If the coax cable does not pass the test 

      Replace the coax cable.

    • If the coax cable passes the test 
  7. Test or replace the T4G Cellular Phone, Navigation and Digital Radio Antenna.
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