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Home >> Dodge and Ram >> 2023 >> ProMaster 2500 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> Audio/Video - Non-DTC Based Diagnostics >> Diagnosis And Testing >> Diagnosis And Testing - Poor Or No Am/Fm Audio Reception >> Diagnostic Test

Diagnostic Test

  1. CHECK THE ANTENNA CONNECTION 
    1. Turn the ignition off.
    2. Disconnect the Radio C3 harness connector.
    3. Inspect the Audio Antenna harness 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. RADIO 
    1. Connect the antenna to the Radio C3 component connector.

      (special tool #9977-6-FM, Antenna)

    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 Radio on and select several different known good stations from the AM and FM bands.
    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 

      • 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 C3 harness connector.
    3. Disconnect the Radio Antenna harness connector.
    4. Connect the antenna to the Radio Antenna harness connector.

      (special tool #9977-6-FM, Antenna)

    5. Turn the Radio on and select several different known good stations from the AM and FM bands.
    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 

      • Go To  4

      No 

      • Replace the Radio 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. Disconnect the antenna from the Radio Antenna harness connector.

      (special tool #9977-6-FM, Antenna)

    3. Connect the appropriate jumper (1)to the Radio Antenna harness connector (2) at the Antenna.

      (special tool #9977-6-4, Jumper) or (special tool #9977-6-2, Jumper)

      GC0143944Courtesy of CHRYSLER GROUP, LLC
    4. Disconnect the Radio C3 harness connector.
    5. Connect the appropriate adapter (1) to the Radio C3 harness connector (2).

      (special tool #9977-6-1, Adapter) (1) or (special tool #9977-6-3, Adapter) (1)

    6. 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, Antenna Cable or Radio Antenna.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Replace the Antenna Cable in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
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