Diagnostic Test

CHECK FOR SHIFT LEVER ASSEMBLY DTCS
1. With the scan tool, check for Shift Lever Assembly DTCs.
  Are there any Shift Lever Assembly DTCs present?
  
  Yes
  - Refer to the appropriate Electrical Diagnostics article and perform the appropriate diagnostic procedure.
  - Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to Standard 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.
  - Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to Standard Procedure .
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 For Short To Ground
Courtesy of CHRYSLER 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.
  - Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to Standard Procedure .
  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 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).
  - Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to Standard Procedure .
  No
  - Using the schematics as a guide, check the Transmission Control Module (TCM) terminals 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.
  - Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to Standard Procedure .