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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 89 ((Powertrain Control Module (Pcm) - Electrical Diagnostics - 62TE Automatic Transmission)) >> DTC Troubleshooting >> P0869-Line Pressure High >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2014 Dodge Journey. 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, check for other DTCs.

      Are there any line pressure sensor or transmission relay output DTCs present also?

      Yes 

      No 

      • Go To  2
  2. CHECK IF THE DTC IS CURRENT 
    1. With the scan tool, check the Starts Since Set counter for P0869.

      Is the Starts Since Set COUNTER 2 or less?

      Yes 

      • Go To  3

      No 

      • Go To  9
  3. CHECK THE PCM AND WIRING 
    1. Turn the ignition off to the lock position.
    2. Remove the Starter Relay.
      CAUTION:

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

      WARNING:

      The Starter Relay must be removed from the PDC. Failure to do so may result in possible serious or fatal injury.

      NOTE:

      Failure to remove the Starter Relay can cause a Transmission - No Response condition.

    3. Install the Transmission Simulator (special tool #8333B, Simulator, Transmission) and the Electronic Transmission Adapter kit.
    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 three line pressure positions.
      NOTE:

      All three scan tool Line Pressure readings should be steady and ± 14 kPa or 2.0 psi (0.2 of a volt) of the reading specified on the Transmission Simulator.

      Did the Line Pressure read within ± 14 kPa or 2.0 psi (0.2 of a volt) in all three positions?

      Yes 

      • Go To  4

      No 

      • Go To  5
  4. CHECK THE LINE PRESSURE SENSOR CALIBRATION 
    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 and reconnect all previously disconnected connectors.
    3. Install the Line Pressure Gauge (special tool #C-3293-SP, Gauge, Pressure 0-300 P.S.I.), 0 to 2000 kPa or 0 to 300 psi in the Line Pressure test port.
    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 or 5 psi of the scan tool reading?

      Yes 

      No 

  5. CHECK THE (T118) PRESSURE CONTROL LINE PRESSURE CIRCUIT FOR AN OPEN 
    Fig 1: Checking Pressure Control Line Pressure Circuit For An Open
    GC0150163Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off to the lock position.
    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) Pressure Control Solenoid Control circuit between the Transmission Solenoid/TRS Assembly harness connector and the appropriate terminal of the PCM C1 harness connector.

      Is the resistance above 5.0 Ohms?

      Yes 

      No 

      • Go To  6
  6. CHECK THE (T118) LP VFS CONTROL CIRCUIT FOR A SHORT TO GROUND 
    Fig 2: Checking Pressure Control Line Pressure Circuit For A Short To Ground
    GC0150164Courtesy of CHRYSLER GROUP, 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  7
  7. CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR AN OPEN 
    Fig 3: Checking 5-Volt Supply Circuit For An Open
    GC0150150Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off to the lock position.
    2. Disconnect the PCM C2 harness connector.
    3. Measure the resistance of the (F856) 5-volt Supply circuit between the Transmission Solenoid/TRS Assembly harness connector to the appropriate terminal of the PCM C2 harness connector.

      Is the resistance above 5.0 Ohms?

      Yes 

      No 

      • Go To  8
  8. CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND 
    Fig 4: Checking 5-Volt Supply Circuit For A Short To Ground
    GC0150151Courtesy of CHRYSLER GROUP, LLC
    1. 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 and program the PCM in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL . With the scan tool, perform Quick Learn.
      • Perform the 62TE TRANSMISSION VERIFICATION TEST. Refer to 62TE TRANSMISSION VERIFICATION TEST  .
  9. 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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