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Diagnostic Test

  1. CHECK THE ANTENNA CONNECTION 
    1. Turn the ignition off.
    2. Disconnect the AM/FM Audio Antenna white connector at the rear of the Radio (RRM).
    3. Inspect the Audio Antenna connection.

      Is the Antenna connection clean and secure?

      Yes 

      • Go To  2

      No 

      • Repair the Antenna connection as needed.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  2. CHECK THE RADIO 
    1. Connect the (special tool #9977-6-FM, Antenna) to the antenna connection on the back of the Radio.
    2. Place the magnetic test antenna on the roof of the vehicle.
    3. Turn the ignition on.
    4. Turn the Radio on and set it to AM or FM band.
    5. Tune in to several AM and FM stations.
    6. Note any of the following type of reception concerns being heard:
      • Silence
      • Static
      • Noise
      • Popping
      • Screeching
      • Hissing
      • Crackling
      • Humming
      • Weak Signal
      • Interference
      • Motor Sound

      Is the audio reception still poor or not available?

      Yes 

      No 

      • Go To  3
  3. TEST THE ANTENNA MODULE AND GRID 
    1. Turn the ignition off.
    2. Disconnect the test antenna and connect the harness connector to the Radio.
      GC0144698Courtesy of CHRYSLER GROUP, LLC
    3. Remove the right C-Pillar trim to gain access to the Antenna Module (3). Refer to PANEL, C-PILLAR TRIM, REMOVAL . Remove the mounting bolt holding the Antenna Module (1).
    4. Disconnect the white AM/FM antenna cable connector (2) from the antenna module.
    5. Connect the (special tool #9977-6-FM, Antenna) to the white AM/FM antenna cable harness connector.
    6. Turn the ignition on.
    7. Turn the Radio on and set it to AM or FM band.
    8. Tune in to several AM and FM stations.
    9. Note any of the following type of reception concerns being heard:
      • Silence
      • Static
      • Noise
      • Popping
      • Screeching
      • Hissing
      • Crackling
      • Humming
      • Weak Signal
      • Interference
      • Motor Sound

      Is the audio reception still poor or not available?

      Yes 

      • Go To  4

      No 

      • Check the antenna grid and repair if necessary. Refer to MAST, ANTENNA, DIAGNOSIS AND TESTING . If the grid checks good, replace the Antenna Module in accordance with the Service Information.
  4. TEST THE ANTENNA CABLE 
    1. Turn the ignition off.
    2. Disconnect the (special tool #9977-6-FM, Antenna) from the Antenna cable.
      GC0143945Courtesy of CHRYSLER GROUP, LLC
    3. Connect the appropriate 50 Ohm test (special tool #9977-6-4, Jumper) (1) or (special tool #9977-6-2, Jumper) (1) to the Antenna cable (2) at the Antenna Module harness connector.
    4. Disconnect the AM/FM Audio Antenna white connector at the rear of the Radio.
    5. Connect the appropriate (special tool #9977-6-1, Adapter) (1) or (special tool #9977-6-3, Adapter) (1) to the antenna cable (2) at the back of the Radio.
      GC0143944Courtesy of CHRYSLER GROUP, LLC
    6. Measure the Resistance across the tool terminals.

      Is the resistance above 52.5 or below 47.5 Ohms?

      Yes 

      • Go To  5

      No 

      • The source of the poor reception is not caused by the Radio or the Antenna cable. Re-check the antenna grid and repair if necessary. Refer to MAST, ANTENNA, DIAGNOSIS AND TESTING . If the grid checks good, replace the Antenna Module in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  5. TEST THE ANTENNA CABLE FROM THE RADIO TO INLINE CONNECTOR 
    1. Disconnect the appropriate (special tool #9977-6-4, Jumper) or (special tool #9977-6-2, Jumper) from the antenna cable at the Antenna Module connector.
    2. Remove the Glove Box Assembly. Refer to GLOVE BOX, INSTRUMENT PANEL, REMOVAL .
    3. Disconnect the white AM/FM antenna connector mounted on the blower housing.
    4. Connect the appropriate 50 Ohm test (special tool #9977-6-4, Jumper) (1) or (special tool #9977-6-2, Jumper) (2) to the side of the Antenna cable (2) that leads to the Radio.
      GC0143944Courtesy of CHRYSLER GROUP, LLC
    5. Measure the Resistance across the tool terminals.

      Is the resistance above 52.5 or below 47.5 Ohms?

      Yes 

      • Replace the section of antenna cable from the Radio to inline connector.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Go To  6
  6. TEST THE ANTENNA CABLE FROM THE INLINE CONNECTOR TO THE ANTENNA MODULE 
    1. Disconnect the appropriate (special tool #9977-6-1, Adapter) or (special tool #9977-6-3, Adapter) from the rear of the Radio.
    2. Connect the appropriate (special tool #9977-6-1, Adapter) (1) or (special tool #9977-6-3, Adapter) (1) to the Antenna cable (2) at the Antenna Module connector.
      GC0143944Courtesy of CHRYSLER GROUP, LLC
    3. Measure the resistance across the tool terminals.

      Is the resistance above 52.5 or below 47.5 Ohms?

      Yes 

      • Replace the section of antenna cable from the inline connector to the Antenna Module.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • The source of the poor reception is not caused by the Radio or the Antenna cable. Re-check the antenna grid and repair if necessary. Refer to MAST, ANTENNA, DIAGNOSIS AND TESTING . If the grid checks good, replace the antenna module in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
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