Diagnostic Test

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 STANDARD PROCEDURE - BODY VERIFICATION TEST .
RADIO
1. Connect the (special tool #9977-6-FM, Antenna) to the Radio C3 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 Radio on and select several different known good stations from the AM and FM bands.
  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 STANDARD PROCEDURE - BODY VERIFICATION TEST .
  No
  - Go To 3
ANTENNA
1. Turn the ignition off.
2. Reconnect the Radio C3 harness connector.
3. Disconnect the Radio Antenna harness connector.
4. Connect the (special tool #9977-6-FM, Antenna) to the Radio Antenna harness connector.
5. Turn the Radio on and select several different known good stations from the AM and FM bands.
  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 STANDARD PROCEDURE - BODY VERIFICATION TEST .
ANTENNA CABLE

Fig 1: Special Tool Jumper & Antenna Harness Connector
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the (special tool #9977-6-FM, Antenna) from the Radio Antenna harness connector.
3. Connect the appropriate (special tool #9977-6-4, Jumper) (1) or (special tool #9977-6-2, Jumper) (1) to the Radio Antenna harness connector (2) at the Antenna.
  
  Fig 2: DVOM, Special Tool & Connector
  Courtesy of CHRYSLER GROUP, LLC
4. Disconnect the Radio C3 harness connector.
5. Connect the appropriate (special tool #9977-6-1, Adapter) (1) or (special tool #9977-6-3, Adapter) (1) to the Radio C3 harness connector (2).
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 STANDARD PROCEDURE - BODY VERIFICATION TEST .
  No
  - Replace the Antenna Cable in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE - BODY VERIFICATION TEST .