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Home >> Chrysler >> 2025 >> Pacifica Plug-In Hybrid Pinnacle >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Audio (Radio) - DTCS B1578-12 To B2206-00 >> DTC Troubleshooting >> B1578-13 Audio Antenna-Circuit Open >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    1. Turn the ignition on and open one of the front doors.
      NOTE:

      A front door must remain open whenever checking or erasing Radio DTCs. 

    2. With the scan tool, perform an ECU reset to the Radio, and then erase DTCs.
    3. Turn the ignition off for a minimum of 10.0 seconds.
    4. Turn the ignition on.
    5. Turn the Radio on and set the volume to 25.
    6. With the scan tool, read Radio DTCs.

      Did the DTC return?

      Yes 

      • Go To  2

      No 

  2. CHECK THE ANTENNA CONNECTIONS 
    1. Turn the ignition off.
    2. Disconnect the Radio Antenna connector.
    3. Inspect the Radio Antenna connection.

      Was the Antenna connection clean and secure?

      Yes 

      • Go To  3

      No 

      • Repair the Antenna connection as needed.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  3. CHECK THE ANTENNA AND CABLE 
    1. Connect the Radio Diagnostic Tool to the Antenna connection on the back of the Radio.

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

      GC0214826Courtesy of CHRYSLER GROUP, LLC
    2. Make sure one of the front doors is still open.
    3. Turn the ignition on.
    4. With the scan tool, perform an ECU reset to the Radio, and then erase DTCs.
    5. Turn the ignition off for a minimum of 10.0 seconds.
    6. Turn the ignition on.
    7. Turn the Radio on.
    8. With the scan tool, read Radio DTCs.

      Is the DTC active?

      Yes 

      No 

      • Go To  4
  4. TEST THE ANTENNA CABLE 
    1. Turn the ignition off.
    2. Disconnect the Antenna cable at the base.
    3. Connect the appropriate Radio Diagnostic Tool to the Antenna cable at the back of the Radio.

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

      GC0214830Courtesy of CHRYSLER GROUP, LLC

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

      GC0214828Courtesy of CHRYSLER GROUP, LLC
    4. Connect the appropriate Radio Diagnostic Tool to the Antenna cable at the Antenna base.

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

      GC0214827Courtesy of CHRYSLER GROUP, LLC

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

      GC0214829Courtesy of CHRYSLER GROUP, LLC
    5. Measure the Resistance across the tool terminals.

      Is the resistance above 52.5 Ohms?

      Yes 

      • Use the Radio Diagnostic Tool (special tool #9977-6, Kit, Radio Antenna Diagnostic) to locate the open circuit, repair or replace the Antenna cable as necessary.
        GC0214818Courtesy of CHRYSLER GROUP, LLC
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

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