Diagnostic Test

1. With the scan tool, record and erase the DTCs.
2. Turn the ignition off and wait one minute.
3. Cycle the ignition from on to off three times then to on.
4. With the scan tool, select: RF Hub.
5. Shift the transmission in and out of gear several times.
6. With the scan tool, read the Active DTCs.

   Does the scan tool display: U1454-00-IMPLAUSIBLE DATA RECEIVED FROM THE GATED PARK SWITCH 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 STANDARD PROCEDURE .

Is this vehicle equipped with an automatic or manual transmission?

AUTOMATIC 

• Go To  3

MANUAL 

• Go To  9

Fig 1: Checking Transmission (TRS) Park Signal Circuit For A Short To Ground

Courtesy of CHRYSLER GROUP, LLC

1. Turn the ignition off.
2. Disconnect the Shifter Lever C3 harness connector.
3. Turn all lights off and close all doors.
4. Wait 90 seconds to allow the modules to go to sleep.
5. Measure the resistance between ground and the (T824) TRS Park Signal circuit in the C3 harness connector.
   NOTE:

   As long as the module is asleep the resistance should be approximately 200K Ohms.

   Is the resistance below 100K Ohms?

   Yes 

   • Repair the short to ground in the (T824) TRS Park Signal circuit.
   • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

   No 

   • Go To  4

Fig 2: Checking Transmission (TRS) Park Signal Circuit For A Short To Voltage

Courtesy of CHRYSLER GROUP, LLC

1. Measure the voltage between ground and the (T824) TRS Park Signal circuit in the Shifter Level C3 harness connector.

   Is the voltage above 0.05 volts?

   Yes 

   • Go To  8

   No 

   • Go To  5

Fig 3: Checking Ground Circuit For An Open

Courtesy of CHRYSLER GROUP, LLC

1. Turn the ignition on.
2. Using a 12-volt test light connected to 12-volts, test the (Z908) Ground circuit in the Shifter Lever C3 harness connector.

   Does the test light illuminate brightly?

   Yes 

   • Go To  6

   No 

   • Repair the open in the (Z908) Ground circuit.
   • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

Fig 4: Checking Transmission (TRS) Park Signal Circuit For An Open Circuit

Courtesy of CHRYSLER GROUP, LLC

1. Measure the voltage between ground and the (T824) TRS Park Signal circuit in the Shifter Level C3 harness connector.

   Is the voltage above 12.0 volts?

   Yes 

   • Replace the Shifter Lever Assembly in accordance with the Service Information. For vehicles with the 40TE Transmission, refer to SHIFTER, TRANSMISSION, REMOVAL . For vehicles with the 62TE Transmission, refer to SHIFTER, TRANSMISSION, REMOVAL .
   • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

   No 

   • Go To  7

Fig 5: Checking Transmission (TRS) Park Signal Circuit For An Open Wire

Courtesy of CHRYSLER GROUP, LLC

1. Turn the ignition off.
2. Disconnect the Radio Frequency Hub C1 harness connector.
3. Measure the resistance of the (T824) TRS Park Signal circuit between the Shifter Lever C3 harness connector and the RF Hub C1 connector.

   Is the resistance below 5.0 ohms?

   Yes 

   • Replace the Radio Frequency 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 Column Lock Module (Export), it MUST be replaced also. When replacing both the RF Hub and the Steering Column Lock Module, the RF Hub must be replaced and programed before replacing the Steering Column Lock Module.

   • Replace the Steering Column 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 .

   No 

   • Repair the open in the (T824) TRS Park Signal circuit.
   • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

Fig 6: Checking Transmission (TRS) Park Signal Wire For A Short To Voltage

Courtesy of CHRYSLER GROUP, LLC

1. Turn the ignition off.
2. Disconnect the Radio Frequency Hub C1 harness connector.
3. Open the driver door and turn the park lamps on.
4. Try to turn the ignition on.
5. Measure the voltage between ground and the (T824) TRS Park Signal circuit in the Shifter Lever C3 harness connector.

   Is there any voltage present?

   Yes 

   • Repair the (T824) TRS Park Signal circuit for a short to voltage
   • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

   No 

   • Replace the Radio Frequency 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 Column Lock Module (Export), it MUST be replaced also. When replacing both the RF Hub and the Steering Column Lock Module, the RF Hub must be replaced and programed before replacing the Steering Column Lock Module.

   • Replace the Steering Column 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 .

Fig 7: Checking Transmission (TRS) Park Signal Circuit For A Short To Ground

Courtesy of CHRYSLER GROUP, LLC

1. Turn the ignition off.
2. Disconnect the Body Control Module "D" harness connector.
   NOTE:

   You can disconnect the "D" connector by dropping the glove box and reaching to the BCM. It is the top outside connector that you can see. You don't have to remove the BCM to get it out or back in.

3. Measure the resistance between ground and the (T824) TRS Park Signal circuit in the BCM "D" harness connector.
4. Turn all lights off and close all doors.
5. Wait 90 seconds to allow the modules to go to sleep.
   NOTE:

   As long as the module is asleep the resistance should be approximately 200K Ohms.

   Is the resistance below 100K Ohms?

   Yes 

   • Repair the short to ground in the (T824) TRS Park Signal circuit.
   • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

   No 

   • Go To  10

Fig 8: Checking Transmission (TRS) Park Signal Circuit For A Short To Voltage

Courtesy of CHRYSLER GROUP, LLC

1. Measure the voltage between ground and the (T824) TRS Park Signal circuit in the BCM "D" harness connector.

   Is the voltage above 0.05 volts?

   Yes 

   • Go To  13

   No 

   • Go To  11

Fig 9: Checking Transmission (TRS) Park Signal Circuit For An Open Circuit

Courtesy of CHRYSLER GROUP, LLC

1. Turn the ignition on.
   NOTE:

   The RF Hub MUST be awake for the result of this test to be valid.

2. Measure the voltage between ground and the (T824) TRS Park Signal circuit in the BCM "D" harness connector.

   Is the voltage above 12.0 volts?

   Yes 

   • Replace the Body Control Module in accordance with the Service Information. Refer to STANDARD PROCEDURE .
   • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

   No 

   • Go To  12

Fig 10: Checking Transmission (TRS) Park Signal Circuit For An Open Wire

Courtesy of CHRYSLER GROUP, LLC

1. Turn the ignition off.
2. Disconnect the Radio Frequency Hub C1 harness connector.
3. Measure the resistance of the (T824) TRS Park Signal circuit between the BCM "D" harness connector and the RF Hub C1 connector.

   Is the resistance below 5.0 ohms?

   Yes 

   • Replace the Radio Frequency 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 Column Lock Module (Export), it MUST be replaced also. When replacing both the RF Hub and the Steering Column Lock Module, the RF Hub must be replaced and programed before replacing the Steering Column Lock Module.

   • Replace the Steering Column 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 .

   No 

   • Repair the open in the (T824) TRS Park Signal circuit.
   • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

Fig 11: Checking Transmission (TRS) Park Signal Wire For A Short To Voltage

Courtesy of CHRYSLER GROUP, LLC

1. Turn the ignition off.
2. Disconnect the Radio Frequency Hub C1 harness connector.
3. Open the driver door and turn the park lamps on.
4. Try to turn the ignition on.
5. Measure the voltage between ground and the (T824) TRS Park Signal circuit in the BCM "D" harness connector.

   Is there any voltage present?

   Yes 

   • Repair the (T824) TRS Park Signal circuit for a short to voltage
   • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

   No 

   • Replace the Radio Frequency 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 Column Lock Module (Export), it MUST be replaced also. When replacing both the RF Hub and the Steering Column Lock Module, the RF Hub must be replaced and programed before replacing the Steering Column Lock Module.

   • Replace the Steering Column 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 .