Diagnostic Test
WARNING: This page is about a different car, the 2025 Jeep Compass. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK THE ANTENNA CONNECTION
- Turn the ignition off.
- Disconnect the FM2 Diversity Antenna connector at the back of the Radio.
- Inspect the FM2 Diversity Antenna connections.
Are the Antenna connections 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
- Connect the Antenna to the antenna connection on the back of the Radio.
(special tool #9977-6-FM, Antenna)
- Make sure one of the front doors is still open.
- Using the scan tool, erase the DTCs.
- Turn the ignition on.
- Turn the Radio on.
- Using the scan tool, read the active Radio DTCs.
Is the DTC active?
Yes
- Replace the Radio in accordance with the Service Information. Refer to RADIO, REMOVAL AND INSTALLATION .
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
No
- Go To 3
- Connect the Antenna to the antenna connection on the back of the Radio.
- TEST THE ANTENNA CABLE
- Disconnect the Antenna cable at the base.
- Connect the appropriate Adapter to the Antenna cable at the back of the Radio.
(special tool #9977-6-1, Adapter)
(special tool #9977-6-3, Adapter)
- Connect the appropriate Jumper to the Antenna cable at the Antenna base.
(special tool #9977-6-4, Jumper)
(special tool #9977-6-2, Jumper)
- Measure the Resistance across the tool terminals.
Is the resistance below 47.5 Ohms?
Yes
- Use the (special tool #9977-6, Kit, Radio Antenna Diagnostic) to locate the short to ground in the circuit, repair or replace the Antenna cable as necessary.
- 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 .
- Use the (special tool #9977-6, Kit, Radio Antenna Diagnostic) to locate the short to ground in the circuit, repair or replace the Antenna cable as necessary.