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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 >> P0869-Line Pressure High >> 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. CHECK FOR RELATED DTCS 
    1. With the scan tool, read DTCs.

      Is DTC P0882 or P0933 present?

      Yes 

      • Refer to DIAGNOSIS AND TESTING  and perform the appropriate diagnostic procedure for DTC P0882 or P0933.

      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 volts when the connector was pushed inward?

      Yes (value was higher and changed to 207 kPa (30 psi) or 0.7 volts) 

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

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

      • Go To  4
  4. CHECK THE PCM AND WIRING 
    1. Turn the ignition OFF.
    2. Remove the Starter Relay from the PDC.
      CAUTION:

      Removal of the Starter Relay will prevent the vehicle from being started in gear.

      WARNING:

      The Starter Relay must be removed. Failure to do so can result in possible serious or fatal injury.

    3. Install the Transmission Simulator (special tool #8333B, 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 volts of the reading specified on the Transmission Simulator.

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

      Yes 

      • Go To  5

      No 

      • Go To  6
  5. CHECK THE LINE PRESSURE SENSOR CALIBRATION 
    1. Turn the ignition OFF.
    2. Disconnect the Transmission Simulator (special tool #8333B, 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 2, 000 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 TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .

      No 

      • Replace the Line Pressure Sensor per the Service information.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .
  6. CHECK THE (T118) LINE PRESSURE VARIABLE FORCE SOLENOID CONTROL CIRCUIT FOR AN OPEN 
    1. Turn the ignition OFF.
    2. Disconnect the Transmission Simulator (special tool #8333B, Simulator, Transmission).
    3. Disconnect the Powertrain Control Module C1 harness connector.
    4. Measure the resistance of the (T118) Line Pressure Variable Force Solenoid Control circuit between the Solenoid/TRS Assembly harness connector and the appropriate terminal of the PCM C1 harness connector.

      Is the resistance above 5.0 ohms?

      Yes 

      • Repair the (T118) Line Pressure Variable Force Solenoid Control circuit for an open.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .

      No 

      • Go To  7
  7. CHECK THE (T118) LINE PRESSURE VARIABLE FORCE SOLENOID CONTROL CIRCUIT FOR A SHORT TO GROUND 
    1. Measure the resistance between ground and the (T118) Line Pressure Variable Force Solenoid Control circuit.

      Is the resistance below 5.0 ohms?

      Yes 

      • Repair the (T118) Line Pressure Variable Force Solenoid Control circuit for a short to ground.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .

      No 

      • Go To  8
  8. CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR AN OPEN 
    1. Measure the resistance of the (F856) 5-volt Supply circuit between the Line Pressure Sensor harness connector and the appropriate terminal of the PCM C1 harness connector.

      Is the resistance above 5.0 ohms?

      Yes 

      • Repair the (F856) 5-volt Supply circuit for an open.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .

      No 

      • Go To  9
  9. CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND 
    1. Disconnect the PCM C1 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 

      • Repair the (F856) 5-volt Supply circuit for a short to ground.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE  .

      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 and program 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  .
  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 set.

      Where any problems found?

      Yes 

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

      No 

      • Test Complete.
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