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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 90 ((Powertrain Control Module (Pcm) - Electrical Diagnostics - 68RFE Automatic Transmission)) >> Diagnosis and Testing >> P2703- Inadequate Element Volume UD >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.
  1. OTHER DTCS PRESENT 
    1. With the scan tool, check for other transmission DTCs.

      Are there any Pressure Switch Sense circuit DTCs present also?

      Yes 

      No 

      • Go To  2.
  2. CHECK UD CLUTCH VOLUME INDEX 
    1. With the scan tool, erase Transmission DTCs.
      NOTE:

      The TRANS TEMP DEG must be at least 43° C or 110° F before performing the following steps.

    2. Drive the vehicle and perform at least ten 5-4 kickdowns by depressing the throttle between 40 and 50 TPS degrees at speeds about 1500 to 1700 RPM on the Output Speed sensor.
    3. With the scan tool, read the UD clutch volume index (CVI).

      Is the UD CVI below 10?

      Yes 

      • Go To  3.

      No 

      • Go To  5.
  3. UD CLUTCH CIRCUIT LEAKS IN THE VALVE BODY 
    1. Turn the ignition off to the lock position.
    2. Remove the transmission oil pan and valve body in accordance with the Service Information.
    3. Check the condition of the UD accumulator springs.
    4. Look for possible leak paths into the UD clutch hydraulics circuit within the valve body.

      Were there any problems found?

      Yes 

      No 

      • Go To  4.
  4. AIR CHECK UD CLUTCH CIRCUIT 
    1. Perform an air check on the UD Clutch circuit in accordance with the Service Information.
    2. Watch and listen for UD Clutch piston movement.
    3. Air check all other pump passages for air leakage into the UD Clutch circuit.

      Were any problems found?

      Yes 

      • Repair internal transmission. Pay attention to components related to the UD clutch. Broken or weak return spring or a dislocated snap ring. If no trouble is found in UD clutch component or UD clutch leakage was noted in passage, replace the Pump Assembly.
      • Perform the appropriate TRANSMISSION VERIFICATION TEST. Refer to 68RFE TRANSMISSION VERIFICATION TEST  .

      No 

      • Replace the Transmission/TRS Solenoid Assembly in accordance with the service information. With the scan tool, perform Quick Learn.
      • Perform the appropriate TRANSMISSION VERIFICATION TEST. Refer to 68RFE TRANSMISSION VERIFICATION TEST  .
  5. VERIFY PCM OPERATION 
    NOTE:

    The TRANS TEMP DEG must be at least 43° C or 110° F before performing the following steps.

    1. Perform eight learnable starts. A learnable start is defined as follows: Start engine. From a standstill, accelerate lightly to 80 Km/h or 50 mph, then brake lightly to a stop. Turn off engine.
    2. With the scan tool, record the clutch volume index (CVI) for all clutches.
    3. With the scan tool, perform a BATTERY DISCONNECT.
    4. With the scan tool, read the CVIs and compare them to the readings recorded before the BATTERY DISCONNECT.

      Are any of the CVIs less than 5 or different than before the BATTERY DISCONNECT?

      Yes 

      • 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 appropriate TRANSMISSION VERIFICATION TEST. Refer to 68RFE TRANSMISSION VERIFICATION TEST  .

      No 

      • Test Complete.
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