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HOMESERVICE MANUALSDODGE AND RAM2013JOURNEY CREW, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 51 (RADIO FREQUENCY (RF HUB) MODULE - ELECTRICAL DIAGNOSTICS)DTC TROUBLESHOOTINGU103C-00-KIN COMMUNICATIONDIAGNOSTIC TEST
2013 Dodge and Ram Journey Crew, AWD

Diagnostic Test

2013 Dodge and Ram Journey Crew, AWDSECTION Diagnostic Test
WARNING: This page is about a different car, the 2012 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.
  1. TEST FOR INTERMITTENT CONDITION 
    NOTE:

    Be sure the battery is fully charged before continuing.

    1. Turn the ignition on.
    2. Using the scan tool, record and erase the DTCs.
    3. Try to start the engine.
    4. With the scan tool, read the Active DTCs and wait one minute.

      Does the scan tool display: U103C-00-KIN COMMUNICATION as active?

      Yes 

      • Go To  2.

      No 

      • Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  2. (A910) FUSED B+ OR (Z907) GROUND CIRCUIT OPEN 
    Fig 1: Checking Fused B+ Or Ground Circuit For Open
    GC0150724Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Keyless Ignition Node harness connector.
    3. Connect a 12 volt test light between the (A910) Fused B+ circuit and the (Z907) Ground circuit.

      Does the test light illuminate brightly? Compare the brightness to that of a direct connection to the battery.

      Yes 

      • Go To  3.

      No 

      • Test the (A910) Fused B+ and (Z907) Ground circuits to determine where the high resistance is. Repair the high resisted circuit as necessary.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  3. (D122) SECURITY K LINE COMMUNICATION CIRCUIT OPEN 
    Fig 2: Checking Security K Line Communication Circuit For Open
    GC0150730Courtesy of CHRYSLER GROUP, LLC
    1. Measure the voltage between ground and the (D122) Security K Line Communication circuit.

      Is the voltage above 12.0 volts?

      Yes 

      No 

      • Go To  4.
  4. (D122) SECURITY K LINE COMMUNICATION WIRE OPEN 
    Fig 3: Checking Security K Line Communication Wire For Open
    GC0150728Courtesy of CHRYSLER GROUP, LLC
    1. Disconnect the Radio Frequency Hub C1 harness connector.
    2. Measure the resistance of the (D122) Security K Line Communication wire between the Keyless Ignition Node harness connector and the RF Hub C1 harness connector.

      Is the resistance below 2.0 Ohms?

      Yes 

      • Go To  5.

      No 

      • Repair the open in the (D122) Security K Line Communication wire.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  5. (D122) SECURITY K LINE COMMUNICATION SHORT TO GROUND 
    Fig 4: Checking Security K Line Communication For Short To Ground
    GC0150729Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between ground and the (D122) Security K Line Communication circuit in the Keyless Ignition Node harness connector.

      Is the resistance below 30K Ohms?

      Yes 

      • Repair the short to ground in the (D122) Security K Line Communication circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Replace the Radio Frequency Hub (RF Hub) Module in accordance with the Service Information. Refer to MODULE, RADIO FREQUENCY (RF HUB), REMOVAL .
        • NOTE:

        If this vehicle is equipped with a Steering Wheel Lock Module (Export) it will have to be replaced also.

      • Replace the Steering Wheel Lock Module in accordance with the Service Information. Refer to MODULE, SHAFT LOCK, REMOVAL .
      • Perform the RADIO FREQUENCY HUB VERIFICATION TEST. Refer to STANDARD PROCEDURE .
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.