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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 430 (Powertrain Control Module (Pcm) - Electrical Diagnostics - 66RFE Automatic Transmission - 2500 Hd & 3500) >> Diagnosis And Testing >> P2700-Inadequate Element Volume LR >> Diagnostic Test

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.
  1. OTHER DTCS PRESENT 
    1. With the scan tool, check for transmission DTCs.

      Are any Pressure Switch Sense circuit DTCs present?

      Yes 

      No 

      • Go To  2
  2. CHECK L/R CLUTCH VOLUME INDEX 
    1. With the scan tool, erase DTCs.
    2. Start the engine and warm the transmission.
      NOTE:

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

    3. Drive the vehicle and perform at least ten 3-1 manual (ERS) downshifts at closed throttle from speeds of about 16 to 24 Km/h (10 to 15 mph).
    4. With the scan tool, read the L/R CL VOL INDEX.

      Is the L/R CL VOL INDEX below 20?

      Yes 

      • Go To  3

      No 

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

      Were any problems found?

      Yes 

      • Repair as necessary.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .

      No 

      • Go To  4
  4. AIR CHECK L/R CLUTCH CIRCUITS 
    1. Perform an air check on the L/R Clutch circuit in accordance with the Service Information.
    2. Watch and listen for L/R Clutch piston movement.

      Does the L/R piston stroke and return properly?

      Yes 

      • Replace the Transmission/TRS Solenoid Assembly in accordance with the service information. With the scan tool, perform a Quick Learn.
      • Perform the 66RFE TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .

      No 

      • Repair internal transmission as necessary. Pay attention to the components related to the L/R clutch. A broken or weak L/R clutch return spring, Accumulator Spring and/or dislocated snap ring could cause this problem.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .
  5. VERIFY PCM OPERATION 
    NOTE:

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

    1. Perform eight learnable starts. A learnable start is defined as follows: Start the engine and accelerate lightly to 80 Km/h or 50 mph then brake lightly to a stop. Turn engine off.
    2. With the scan tool, record the CL VOL 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 a Quick Learn.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .

      No 

      • Test Complete.