Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR DTC P0750
1. With the scan tool, read TCM DTCs.
  Is DTC P0750 set?
  
  Yes
  - Repair DTC P0750. Refer to P0750-LR SOLENOID CIRCUIT .
  No
  - Go To 2
CHECK FOR AN ACTIVE CONDITION
1. With the scan tool, read TCM DTCs and record on the repair order.
2. Record the Event Data and Environmental Data.
3. With the scan tool, erase DTCs.
4. Drive the vehicle until the Transmission temperature is at least 43° C (110° F) and the engine temperature at least 49° C (120° F).
5. Perform the following four steps three times.
6. Drive the vehicle to the speed of at least 88 Kmh (55 mph).
7. Allow 4th or 5th gear to engage for 10 seconds.
8. Close the throttle.
  NOTE:
  If the throttle angle goes over 30 degrees, you must close the throttle and try again.
9. Tip back into the throttle until the TPS angle is between 25 and 29 degrees.
  Did the TCC engage during any of the attempts? (Engine speed was approximately equal to input speed.)
  
  Yes
  - Go To 5
  No
  - Go To 3
CHECK THE L/R-TCC SOLENOID
1. With the scan tool, read TCM DTCs and record on the repair order.
  Are DTCs P1775 and P0841 present?
  
  Yes
  - Replace Transmission Solenoid/TRS Assembly in accordance with the Service Information.
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to 65RFE TRANSMISSION VERIFICATION TEST .
  No
  - Go To 4
CHECK THE TORQUE CONVERTER AND INTERNAL TRANSMISSION
1. Repair internal Transmission as necessary in accordance with the Service Information.
2. Check for the following possible causes:
  - Inspect the Transmission Oil Pump Assembly.
  - Check the Torque Converter Switch Valve and the Torque Converter Clutch Control Valve for sticking in the bore.
  - Check the Teflon seal rings on the input shaft.
    NOTE:
    If one of the seal rings is cut, the loose piece will often lodge in the TCC switch valve, causing it to stick in its bore.
3. If no problems are found, replace the Transmission Solenoid/TRS Assembly.
  Repair
  - In all cases, replace the Torque Converter. Make sure to check all other possible causes in addition to the Torque Converter.
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to 65RFE TRANSMISSION VERIFICATION TEST .
CHECK WIRING AND CONNECTORS
1. The conditions necessary to set the 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. Check for any Service Bulletins that may apply.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to 65RFE TRANSMISSION VERIFICATION TEST .
  No
  - Test complete.