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Diagnostic Test

  1. CHECK THE ANTENNA CONNECTION 
    1. Turn the ignition off.
    2. Disconnect the Radio C7 harness connector.
    3. Inspect the GPS Antenna harness connection.

      Is the Antenna connection clean and secure?

      Yes 

      • Go To  2

      No 

      • Repair the GPS Antenna connection as needed.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  2. RADIO 
    1. Connect the adapter (special tool #9977-6-GPS, Adapter, GPS Antenna Diagnostic) (1) to the Radio C7 component connector.
    2. Place the test antenna base on the roof of the vehicle.
    3. Turn the ignition on.
    4. Drive the vehicle outside to an un-obstructed area.
    5. Turn the Satellite Radio on and select several different known good stations.

      Is the reception still poor or not available?

      Yes 

      • Replace the Radio in accordance with the service information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Go To  3
  3. ANTENNA 
    1. Turn the ignition off.
    2. Reconnect the Radio C7 harness connector.
    3. Disconnect the GPS Antenna harness connector.
    4. Connect the adapter (special tool #9977-6-GPS, Adapter, GPS Antenna Diagnostic) (1) to the Radio C7 component connector.
    5. Turn the Radio on.

      Is the reception still poor or not available?

      Yes 

      • Go To  4

      No 

      • Replace the GPS Antenna in accordance with the service information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  4. ANTENNA CABLE 
    GC0143945Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Connect the adapter (special tool #9977-6-GPS, Adapter, GPS Antenna Diagnostic) (1) to the Radio C7 component connector.
    3. Connect the appropriate jumper (special tool #9977-6-4, Jumper) (1) or (special tool #9977-6-2, Jumper) (1) to the GPS Antenna harness connector (2) at the Antenna.
      GC0143944Courtesy of CHRYSLER GROUP, LLC
    4. Connect the appropriate adapter (special tool #9977-6-1, Adapter) (1) or (special tool #9977-6-3, Adapter) (1) to the Radio C7 harness connector (2).
    5. Measure the resistance across the tool terminals.

      Is the resistance between 47.5 and 52.5 Ohms?

      Yes 

      • The source of the poor reception is not caused by the Radio, Satellite Antenna Cable or Satellite Antenna.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Replace the GPS Antenna Cable in accordance with the service information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
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