Diagnostic Test

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 2
  No
  - Repair the Antenna connection as needed.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE ANTENNA AND CABLE
1. Connect the Radio Diagnostic Tool antenna to the Antenna connection on the back of the Radio.
  (special tool #9977-6-FM, Antenna)
2. Make sure one of the front doors is still open.
3. Using the scan tool, erase the DTCs.
4. Turn the ignition on.
5. Turn the Radio on.
6. Using the scan tool, read the active Radio DTCs.
  Does this DTC display as active?
  
  Yes
  - Repair or replace the Radio in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
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) or (special tool #9977-6-3, Adapter)
4. Connect the appropriate Radio Diagnostic Tool to the Antenna cable at the Antenna base.
  (special tool #9977-6-4, Jumper) or (special tool #9977-6-2, Jumper)
5. Measure the Resistance across the tool terminals.
  Is the resistance above 52.5 Ohms?
  
  Yes
  - Use the Radio Diagnostic Tool to locate the open circuit, repair or replace the Antenna cable as necessary.
    (special tool #9977-6, Kit, Radio Antenna Diagnostic)
  - 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 .