Diagnostic Test

CHECK FOR SHIFT LEVER ASSEMBLY DTCS
1. With the scan tool, check for Electronic Shift Module (ESM) DTCs.
  Are there any Shift Lever ESM DTCs present?
  
  Yes
  - Refer to DIAGNOSIS AND TESTING and perform the appropriate diagnostic procedure.
  No
  - Go To 2.
CHECK THE SHIFT LEVER ASSEMBLY CABLE FOR PROPER ADJUSTMENT
1. Check the Shift Lever Assembly Cable for proper adjustment in accordance with the Service Information.
  Is the Shift Lever Assembly Cable properly adjusted?
  
  Yes
  - Go To 3.
  No
  - Adjust the Shift Lever Assembly Cable in accordance with the Service Information. Refer to CABLE, SHIFT, ADJUSTMENTS .
  - Refer to STANDARD PROCEDURE and perform the NAG1 TRANSMISSION VERIFICATION TEST.
CHECK THE (T54) TEMPERATURE SENSOR-P/N SWITCH SIGNAL CIRCUIT FOR A SHORT TO GROUND

Fig 1: Checking Temperature Sensor-P/N Switch Signal Circuit Is Shorted To Ground
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off to the lock position.
2. Disconnect the TCM C2 harness connector.
3. Measure the resistance between ground and the (T54) Temperature Sensor-P/N Switch Signal circuit.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Repair the (T54) Temperature Sensor-P/N Switch Signal circuit for a short to ground.
  - Refer to STANDARD PROCEDURE and perform the NAG1 TRANSMISSION VERIFICATION TEST.
  No
  - Go To 4.
CHECK THE (T54) TEMPERATURE SENSOR-P/N SWITCH SIGNAL CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT

Fig 2: Checking Temperature Sensor-P/N Switch Signal Circuit For Short To Another Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Disconnect the TCM C1 harness connector.
2. Disconnect the Transmission Electrohydraulic Control Unit Assembly harness connector.
3. Measure the resistance between the (T54) Temperature Sensor-P/N Switch Signal circuit and all other circuits in the TCM C1 and C2 harness connectors.
  Is the resistance below 5.0 Ohms between the (T54) Temperature Sensor-P/N Switch Signal circuit and any other circuit(s)?
  
  Yes
  - Repair the (T54) Temperature Sensor-P/N Switch Signal circuit for a short to another circuit(s).
  - Refer to STANDARD PROCEDURE and perform the NAG1 TRANSMISSION VERIFICATION TEST.
  No
  - Using the schematics as a guide, check the Transmission Control Module (TCM) pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the TCM in accordance with the Service Information. Refer to MODULE, TRANSMISSION CONTROL, REMOVAL .
  - Refer to STANDARD PROCEDURE and perform the NAG1 TRANSMISSION VERIFICATION TEST.