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Home >> Chevrolet >> 2013 >> Sonic RS, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 629 (Cellular System, Entertainment System And Navigation System) >> Diagnostic Information and Procedures >> DTC B2485: Wireless Communication (BT) Antenna >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2014 Chevrolet Sonic. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that the T4S Wireless Communication Antenna - Bluetooth® is properly connected to the K73 Telematics Communication Interface Control Module and is not damaged.
    • If the antenna is disconnected 

      Connect the T4S Wireless Communication Antenna - Bluetooth® to the module.

    • If the antenna is damaged 

      Test or replace the T4S Wireless Communication Antenna - Bluetooth®.

    • If the antenna is connected and not damaged 
  2. Ignition ON, infotainment system ON.
    NOTE: The Multimedia Interface Tool can be used to test either cellular phone or streaming audio functions. Refer to the tool instructions and perform the appropriate test(s) related to the customers concern in the following steps.
  3. Verify the infotainment system successfully pairs with the Multimedia Interface Tool.
    • If the infotainment system does not successfully pair with the Multimedia Interface Tool. 
    1. Test or replace the T4S Wireless Communication Antenna - Bluetooth®.
    2. Clear the DTC, ignition OFF.
    3. Ignition ON.
    4. Verify the DTC is not set.
      • If the DTC is set, replace the K73 Telematics Communication Interface Control Module.
      • If the DTC is not set
    5. All OK.
    • If the infotainment system successfully pairs with the Multimedia Interface Tool. 
  4. All OK.
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