Diagnostic Test

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

CHECK THE REMOTE START ANTENNA CONNECTION
NOTE:
Verify that the battery is fully charged with a DVOM and use the scan tool to compare the Battery Voltage listed under "Data" in the RFH View to that of the BCM. If the battery is not fully charged, correct this condition before proceeding.
1. Gain access to the RF Hub connectors.
2. Disconnect and reconnect the Remote Start Antenna at the RF Hub module.
3. Using the scan tool, record and erase the DTCs.
4. Turn the ignition to the Lock position.
5. Start the engine and allow to run for 30 seconds.
6. Using the scan tool, read the active DTCs.
  Does the scan tool display; B1A76-11-REMOTE START ANTENNA CIRCUIT - CIRCUIT SHORT TO GROUND?
  
  Yes
  - Go To 2
  No
  - Test complete.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE REMOTE START ANTENNA CONNECTION
1. Disconnect the Remote Start Antenna.
2. Replace the antenna with a known good antenna.
3. Turn the ignition to the Lock position.
4. Start the engine and allow to run for 30 seconds.
5. Using the scan tool, read the active DTCs.
  Does the scan tool display; B1A76-11-REMOTE START ANTENNA CIRCUIT - CIRCUIT SHORT TO GROUND?
  
  Yes
  - Replace the Radio Frequency Hub in accordance with the Service Information. Refer to MODULE, RADIO FREQUENCY (RF HUB), REMOVAL .
  - Perform the RADIO FREQUENCY HUB VERIFICATION TEST. Refer to RADIO FREQUENCY HUB (RF HUB) VERIFICATION TEST .
  No
  - Replace the Remote Start Antenna in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .