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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. CHECK FOR RELATED DTCS 
    1. With the scan tool, read DTCs.

      Is the DTC P0933 or P0882 present also?

      Yes 

      No 

      • Go To  2.
  2. CHECK IF THE DTC IS CURRENT 
    1. With the scan tool, read DTCs.

      Is the status Active or is the Starts Since Set counter 2 or less for this DTC?

      Yes 

      • Go To  3.

      No 

      • Go To  10.
  3. CHECK THE LINE PRESSURE SENSOR CONNECTION 
    1. Ignition on, engine not running. 
    2. With the scan tool, monitor the Line Pressure while firmly pushing the Transmission Line Pressure Sensor connector inwards towards the Transmission.

      Did the Line Pressure reading on the scan tool CHANGE to about 207 kPa (30 psi) or 0.7 of a volt when the connector was pushed inward?

      Yes (value was higher and changed to 207 kPa (30 psi) or 0.7 of a volt) 

      • Disconnect and properly reconnect the Line Pressure Sensor connector. Inspect terminals and repair as necessary.
      • Perform the appropriate TRANSMISSION VERIFICATION TEST. Refer to 68RFE TRANSMISSION VERIFICATION TEST  .

      No (value is higher than 207 kPa (30 psi) or 0.7 of a volt and did not change or the value was already 207 kPa (30 psi) or 0.7 of a volt and did not change) 

      • Go To  4.
  4. 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 #8333A, Simulator, Transmission).
    4. With the Transmission Simulator select the "OFF" position on the "Input/Output Speed" switch.
    5. Ignition on, engine not running.
    6. With the scan tool, monitor the Line Pressure during the following step.
    7. Using the Transmission Simulator, set the rotary switch to each of the 3 line pressure positions.
      NOTE:

      All three scan tool Line Pressure readings should be steady and ±14 kPa (2.0 psi) or 0.1 of a volt of the reading specified on the Transmission Simulator.

      Did the Line Pressure read within ±14 kPa (2.0 psi) or 0.1 of a volt in all three positions?

      Yes 

      • Go To  5.

      No 

      • Go To  6.
  5. CHECK THE LINE PRESSURE SENSOR CALIBRATION 
    1. Turn the ignition off to the lock position.
    2. Disconnect the Transmission Simulator (special tool #8333A, Simulator, Transmission) and reconnect all previously disconnected connectors.
    3. Install the Line Pressure Adaptor (special tool #8259, Adapter, Pressure Test), and Pressure Gauge (special tool #C-3293-SP, Gauge, Pressure 0-300 P.S.I.), 0 to 2000 kPa (0 to 300 psi).
    4. Start the engine in park.
    5. Monitor the Line Pressure readings on the scan tool and the pressure gauge.
    6. Compare the Line Pressure readings between the scan tool and the pressure gauge.

      Is the pressure gauge reading within 34 kPa (5 psi) of the scan tool reading?

      Yes 

      • Repair the internal transmission and inspect the Transmission Oil Pump in accordance with the Service Information and replace if necessary. If no problem is found, replace the Transmission Solenoid/TRS Assembly, possible cause is a stuck Pressure Control Solenoid.
      • Perform the appropriate TRANSMISSION VERIFICATION TEST. Refer to 68RFE TRANSMISSION VERIFICATION TEST  .

      No 

      • Replace the Line Pressure Sensor in accordance with the Service information.
      • Perform the appropriate TRANSMISSION VERIFICATION TEST. Refer to 68RFE TRANSMISSION VERIFICATION TEST  .
  6. CHECK THE (T118) LP VFS CONTROL CIRCUIT FOR AN OPEN 
    Fig 1: Checking LP VFS Control Circuit For Open
    GC0137261Courtesy of CHRYSLER LLC
    1. Turn the ignition off to the lock position.
    2. Disconnect the Transmission Simulator (special tool #8333A, Simulator, Transmission).
    3. Disconnect the Powertrain Control Module C2 harness connector.
    4. Measure the resistance of the (T118) LP VFS Control circuit between the Solenoid/TRS Assembly harness connector and the appropriate terminal of the PCM C2 harness connector.

      Is the resistance above 5.0 Ohms?

      Yes 

      No 

      • Go To  7.
  7. CHECK THE (T118) LP VFS CONTROL CIRCUIT FOR A SHORT TO GROUND 
    Fig 2: Checking LP VFS Control Circuit For Short To Ground
    GC0137262Courtesy of CHRYSLER LLC
    1. Measure the resistance between ground and the (T118) LP VFS Control circuit.

      Is the resistance below 5.0 Ohms?

      Yes 

      No 

      • Go To  8.
  8. CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR AN OPEN 
    Fig 3: Checking 5-Volt Supply Circuit For Open
    GC0137257Courtesy of CHRYSLER LLC
    1. Disconnect the Powertrain Control Module C2 harness connector.
    2. Measure the resistance of the (F856) 5-volt Supply circuit between the Line Pressure Sensor harness connector and the appropriate terminal of the PCM C2 harness connector.

      Is the resistance above 5.0 Ohms?

      Yes 

      No 

      • Go To  9.
  9. CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND 
    Fig 4: Checking 5-Volt Supply Circuit For Short To Ground
    GC0137258Courtesy of CHRYSLER LLC
    1. Disconnect the PCM C2 harness connector.
    2. Disconnect the Line Pressure Sensor harness connector.
    3. Measure the resistance between ground and the (F856) 5-volt Supply circuit.

      Is the resistance below 5.0 Ohms?

      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. 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  .
  10. CHECK THE WIRING AND CONNECTORS 
    1. The conditions necessary to set this 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. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set.

      Where there any problems found?

      Yes 

      No 

      • Test Complete.
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