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Home >> Chrysler >> 2013 >> 200 S, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Powertrain Control Module (Pcm) - Electrical Diagnostics - 40TE Automatic Transmission) >> DTC Troubleshooting >> P0721-Output Speed Sensor Circuit Performance >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. CHECK IF THE DTC IS CURRENT 
    1. Start the engine in park.
    2. Raise the drive wheels off of the ground.
      WARNING:

      Properly support the vehicle.

    3. Firmly apply the brakes and place the transmission selector in drive.
      WARNING:

      Be sure to keep hands and feet clear of rotating wheels.

    4. Release the brakes and allow the drive wheels to spin freely.
      NOTE:

      The drive wheels must be turning at this point.

    5. With the scan tool, read the Output RPM

      Is the Output RPM below 100?

      Yes 

      • Go To  2

      No 

      • Go To  8
  2. CHECK THE PCM AND WIRING USING THE TRANSMISSION SIMULATOR 
    1. Turn the ignition off to the lock position.
    2. Remove the Ignition Switch Feed fuse from the TIPM.
      CAUTION:

      Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being started in gear.

      WARNING:

      The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in possible serious or fatal injury.

    3. Install the Transmission Simulator (special tool #8333B, Simulator, Transmission) and the Electronic Transmission Adapter kit.
    4. Ignition on, engine not running.
    5. With the Transmission Simulator, set the "Input/Output Speed" switch to "ON" and the rotary switch to the "3000/1250" position.
    6. With the scan tool, read the Input and Output RPM.

      Does the Input RPM read 3000 and the Output RPM read 1250 (± 50 RPM)?

      Yes 

      No 

      • Go To  3
  3. CHECK THE (T14) OUTPUT SPEED SIGNAL CIRCUIT FOR AN OPEN 
    Fig 1: Checking Output Speed Signal Circuit For An Open
    GC0149961Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off to the lock position.
    2. Disconnect the Transmission Simulator (special tool #8333B, Simulator, Transmission) and the Electronic Transmission Adapter kit.
    3. Disconnect the PCM C1 harness connector.
    4. Disconnect the Output Speed Sensor harness connector.
      NOTE:

      Check connectors - Clean/repair as necessary.

    5. Measure the resistance of the (T14) Output Speed Signal circuit between the PCM C1 harness connector and the Output Speed Sensor harness connector.

      Is the resistance above 5.0 Ohms?

      Yes 

      No 

      • Go To  4
  4. CHECK THE (T13) SPEED SENSOR GROUND CIRCUIT FOR AN OPEN 
    Fig 2: Checking Speed Sensor Ground Circuit For An Open
    GC0150271Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance of the Speed Sensor Ground circuit between the PCM C1 harness connector and the Output Speed Sensor harness connector.

      Is the resistance above 5.0 Ohms?

      Yes 

      No 

      • Go To  5
  5. CHECK THE (T14) OUTPUT SPEED SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    Fig 3: Checking Output Speed Signal Circuit For A Short To Ground
    GC0149963Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between ground and the (T14) Output Speed Signal circuit.

      Is the resistance below 5.0 Ohms?

      Yes 

      No 

      • Go To  6
  6. CHECK THE (T14) OUTPUT SPEED SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE 
    Fig 4: Checking Output Speed Signal Circuit For A Short To Voltage
    GC0149965Courtesy of CHRYSLER GROUP, LLC
    1. Ignition on, engine not running.
    2. With the scan tool under TIPM, actuate the TCM output.
    3. Measure the voltage of the (T14) Output Speed Signal circuit.

      Is the voltage above 0.5 of a volt?

      Yes 

      No 

      • Go To  7
  7. CHECK THE (T13) SPEED SENSOR GROUND CIRCUIT FOR A SHORT TO VOLTAGE 
    Fig 5: Checking Speed Sensor Ground Circuit For A Short To Voltage
    GC0150272Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    Actuation of the transmission must still be active.

    1. Measure the voltage of the (T13) Speed Sensor Ground circuit.

      Is the voltage above 0.5 of a volt?

      Yes 

      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. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply. If no problems are found, replace and program the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn.
      • Perform the 40/41TE VERIFICATION TEST. Refer to 40/41TE TRANSMISSION VERIFICATION TEST  .
  8. CHECK THE 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 wiring and connectors 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.
    5. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply.

      Were there any problems found?

      Yes 

      No 

      • Test Complete.