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Home >> Dodge and Ram >> 2023 >> ProMaster 2500 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> 948TE/9HP48 - DTCS P2803-00 To U1932-00 >> DTC Troubleshooting >> P2879-00-Clutch 2 Performance Stuck Disengaged >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR OTHER PARK LOCK DTCS 
    1. With the scan tool, read TCM DTCs and record on the repair order.

      Are any other Park Lock related DTCs set?

      Yes 

      No 

      • Go To  2.
  2. CHECK FOR AN ACTIVE DTC 
    1. Record the Event Data and Environmental Data.
    2. With the scan tool, erase DTCs.
    3. Using the recorded Event and Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
    4. With the scan tool, read TCM DTCs.

      Did the DTC return?

      Yes 

      • Go To  3

      No 

  3. INSPECT VALVE BODY AND PARK LOCK VALVES FOR DAMAGE OR CONTAMINATION 
    1. Remove the Valve Body. Refer to VALVE BODY, REMOVAL .
    2. Inspect the Park Lock Valves for sticking, burrs, and debris.
    3. Inspect the Valve Body Park Lock bores for debris, burrs, and damage.
    4. Inspect the related Valve Body oil pressure passages for restrictions and debris.

      Were any problems found?

      Yes 

      No 

      • Go To  4
  4. CHECK CLUTCH C PRESSURE REGULATOR SOLENOID FOR DAMAGE OR CONTAMINATION 
    1. Remove the Clutch C Pressure Control Solenoid.
    2. Inspect the Clutch C Pressure Control Solenoid for damage, debris and sticking.
    3. Inspect the Valve Body Solenoid bore and oil pressure passages for debris and damage.

      Where any problems found?

      Yes 

      No 

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