Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR RELATED DTCS
1. With the scan tool, check for other transmission DTCs.
  Is the DTC P0841 present also?
  
  Yes
  - Refer to DIAGNOSIS AND TESTING and perform the appropriate diagnostic procedure.
  No
  - Go To 2
CHECK IF THE DTC IS CURRENT
1. With the scan tool, read DTCs.
  Is the status Active or is the Starts Since Set counter 2 or less for this DTC?
  
  Yes
  - Go To 3
  No
  - Go To 6
CHECK THE PCM AND WIRING
1. Turn the ignition off.
2. Remove the Starter Relay from the PDC.
  CAUTION:
  Removal of the Starter Relay will prevent the vehicle from being started in gear.
  
  WARNING:
  The Starter Relay must be removed from the PDC. Failure to do so may result in possible serious or fatal injury.
3. Install the Transmission Simulator (special tool #8333B, Simulator, Transmission).
4. Ignition on, engine not running.
5. With the Transmission Simulator, turn the Pressure Switch selector switch to L/R.
6. With the scan tool, monitor the L/R Pressure Switch state while pressing the Pressure Switch Test button on the Transmission Simulator.
  Did the state of the L/R Pressure Switch change while pressing the Pressure Switch Test button?
  
  Yes
  - Go To 4
  No
  - Go To 5
CHECK IF THE SOLENOID SWITCH VALVE STICKING
1. Turn the ignition off.
2. Remove the Transmission Oil Pan in accordance with the Service Information.
3. Remove the Transmission Valve body in accordance with the Service Information.
4. Inspect the Solenoid Switch Valve and Plugs for sticking.
  Is the Solenoid Switch Valve or Plugs sticking?
  
  Yes
  - Clean and inspect in accordance with the Service Information. Repair as necessary.
  - Perform the 68RFE TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace the Transmission Solenoid/TRS Assembly in accordance with the Service Information.
  - Perform the 68RFE TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE L/R PRESSURE SWITCH SENSE CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT
1. Turn the ignition off.
2. Disconnect the Transmission Solenoid/TRS Assembly harness connector.
3. Disconnect all PCM harness connectors.
4. Measure the resistance between the (T50) L/R Pressure Switch Sense circuit and all other circuits in the Transmission Solenoid/TRS Assembly harness connector.
  Is the resistance below 5.0 Ohms between the (T50) L/R Pressure Switch Sense circuit and all other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector?
  
  Yes
  - Repair the (T50) L/R Pressure Switch Sense circuit for a short to another circuit(s).
  - Perform the 68RFE TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn.
  - Perform the 68RFE TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK WIRING AND CONNECTORS
1. The conditions necessary to set this DTC are not present at this time.
2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
3. Wiggle the wires while checking for shorted and open circuits.
4. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set.
  Where there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the 68RFE TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Test Complete.