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Diagnostic Test

  1. DTC STATUS IS ACTIVE 
    NOTE: Cycling the key will change any active fault to stored. Always refer to the results of the trigger test routine for the status of the fault.
    1. Ignition on, engine not running.
    2. With the scan tool, run the "Trigger Module Test Routine" under "Miscellaneous Functions" for the "WIN" and follow the procedure.
      NOTE: Three TPM Transponders are located in three of the four wheel wells on the vehicle to provide the WIN with the location of the TPM Sensors on the vehicle. A fourth transponder is not necessary in the remaining wheel well due to the process-of-elimination theory. Once the system knows the location of the first three sensors it assumes the location of the fourth sensor. The locations of the TPM Transponder can vary for each vehicle. Make sure the vehicle has TPM Transponders, and that are in the right locations. After every repair, the trigger module test routine must be rerun in order to verify the fix.

      Did the Left Front TPM Transponder have NO as a result?

      Yes 

      • Go to step  2

      No 

      • Go to step  8
  2. (F924) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN OR HIGH RESISTANCE 
    Fig 1: Checking Fused Ignition Switch Output (Run) Circuit Open Or High Resistance
    GC0120563Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the Left Front TPM Transponder harness connector.
    3. Turn the ignition on.
    4. Using a 12-volt test light connect to ground, check the (F924) Fused Ignition Switch Output (Run) circuit.
      NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.

      Is the test light illuminated and bright?

      Yes 

      • Go To  3

      No 

  3. (Z924) GROUND CIRCUIT(S) OPEN OR HIGH RESISTANCE 
    Fig 2: Checking Ground Circuit Open Or High Resistance
    GC0120564Courtesy of CHRYSLER LLC
    1. Using a 12-volt test light connect to battery voltage, check each of the (Z924) Ground circuit(s).
      NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.

      Does the test light illuminate brightly?

      Yes 

      • Go To  4

      No 

  4. (D508) COM-LIN TIRE PRESSURE MONITOR LAN CIRCUIT SHORTED TO VOLTAGE 
    Fig 3: Checking COM-LIN Tire Pressure Monitor LAN Circuit For Short To Voltage
    GC0107006Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the remaining TPM Transponder harness connectors.
    3. Disconnect the WIN harness connector.
    4. Turn the ignition on.
    5. Measure the voltage of the (D508) COM-LIN Tire Pressure Monitor LAN circuit.

      Is there any voltage present?

      Yes 

      No 

      • Go to step  5
  5. (D508) COM-LIN TIRE PRESSURE MONITOR LAN CIRCUIT SHORTED TO GROUND 
    Fig 4: Checking COM-LIN Tire Pressure Monitor LAN Circuit For Short To Ground
    GC0107007Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Measure the resistance between ground and the (D508) COM-LIN Tire Pressure Monitor LAN circuit.

      Is the resistance below 5.0 Ohms?

      Yes 

      No 

      • Go to step  6
  6. (D508) COM-LIN TIRE PRESSURE MONITOR LAN CIRCUIT OPEN OR HIGH RESISTANCE 
    Fig 5: Checking COM-LIN Tire Pressure Monitor LAN Circuit Open Or High Resistance
    GC0120567Courtesy of CHRYSLER LLC
    1. Use a jumper wire with one end connected to ground and the other to the (D508) COM-LIN Tire Pressure Monitor LAN circuit in the Wireless Ignition Node (WIN) harness connector.
    2. Using a 12-volt test light connected to battery voltage, probe the (D508) COM-LIN Tire Pressure Monitor LAN circuit in the TPM harness connector.
      NOTE: The test light should be illuminated and bright. Compared the brightness to that of a direct connection to the battery.

      Does the test light illuminate bright?

      Yes 

      • Go To  7

      No 

  7. TIRE PRESSURE MONITORING (TPM) TRANSPONDER 
    1. Turn the ignition off.
    2. Replace the Left Front Tire Pressure Monitoring (TPM) Transponder in accordance with the Service Information.

      Perform the TPM VERIFICATION TEST. See DTC-Based Diagnostics/NODE, Wireless Ignition (WIN) - Standard Procedure .

    3. With the scan tool, erase DTCs.
    4. Test drive the vehicle for a minimum of 10 minutes with vehicle speed greater than 24 km/h (15 mph).
    5. With the scan tool, run the "Trigger Module Test Routine" under "Miscellaneous Functions" for the "WIN" and follow the procedure.

      Did the Left Front TPM Transponder have NO as a result?

      Yes 

      No 

      • Go to step  8
  8. INTERMITTENT TIRE PRESSURE TRIGGER MODULE DTC 
    1. The conditions necessary to set this DTC are not present or has been corrected.
    2. Perform any Technical Service Bulletins that may apply to this condition.
    3. With the scan tool, erase DTCs in the Wireless Ignition Node (WIN).
    4. Test drive the vehicle for a minimum of 10 minutes with vehicle speed greater than 24 km/h (15 mph).
    5. With the scan tool, read DTCs in the Wireless Ignition Node (WIN).

      Are there any DTCs present?

      Yes 

      No 

      • Test complete.
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