LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2013 >> Volt >> Repair and Diagnosis >> External Pages >> Different car >> Section 51 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> No Global Positioning System (GPS) Reception >> Circuit/System Testing
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit/System Testing

WARNING: This page is about a different car, the 2011 Chevrolet Volt. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the coax cable connector at the K73 telematics communication interface control module.
  2. Using the EL-49903-3 kit (EL-49903-5 adapter and EL-49903-4 coax cable), connect the EL-49903  EL-49903 to the K73 telematics communication interface module, place the test antenna on the roof of the vehicle. See Special Tools .
  3. Ignition ON, verify DTC B2462 is not set in the K73 telematics communication interface module.
    • If DTC B2462 is set as current, replace the K73 telematics communication interface module.
  4. Ignition OFF, disconnect the navigation antenna coax cable connector at the A11 radio.
  5. Connect the EL-49903  EL-49903 to the A11 radio, place the test antenna on the roof of the vehicle. See Special Tools .
  6. Ignition ON, verify DTC B2462 is not set in the A11 radio.
    • If DTC B2462 is set as current, replace the A11 radio.
  7. Ignition OFF, reconnect the antenna coax cable connections at both the K73 telematics communication interface module and the A11 radio.
  8. Disconnect the K73 telematics communication interface module coax at the T15 navigation signal splitter.
  9. Ignition ON, test for 4.5-5.5 V between the coax cable center conductor and the outer shield.
    • If not within the specified range, replace the coax cable.
  10. Ignition OFF, disconnect the A11 radio navigation coax at the T15 navigation signal splitter.
  11. Ignition ON, test for 4.5-5.5 V between the coax cable center conductor and the outer shield.
    • If not within the specified range, replace the coax cable.
  12. Disconnect the antenna coax cable from the T15 navigation signal splitter and the T4G cellular phone, navigation and digital radio antenna.
  13. Perform the coax cable test on the coax cable between the T15 navigation signal splitter and the T4G cellular phone, navigation and digital radio antenna, refer to Component Testing . The coax cable should pass the test.
    • If the coax cable does not pass the test, replace the coax cable.
  14. Reconnect all coax cable connections at the T15 navigation signal splitter.
  15. Ignition ON, test for 4.5-5.5 V between the coax cable center conductor and the outer shield at the T4G cellular phone, navigation and digital radio antenna.
    • If not within the specified range, replace the T15 navigation signal splitter.
  16. If all circuits test normal, replace the T4G cellular phone, navigation and digital radio antenna.
scientia non olet · About LEMON Manuals