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Home >> Ford >> 2024 >> Escape Active, 4WD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 8-Speed Automatic Transmission - 8F35/8F40 (Diagnosis & Testing 2.0L - Diagnosis By Symptom) >> Diagnosis And Testing >> DTC Chart and Pinpoint Tests - 2.0L EcoBoost (184kW/250PS) - MI4 >> Pinpoint Tests >> Pinpoint Test I: Park Lock Pawl Solenoid >> Pinpoint Test I: Park Lock Pawl Solenoid

Pinpoint Test I: Park Lock Pawl Solenoid

  1. Refer to Transmission Controls - 8F35 for schematic and connector information.

    Normal Operation and Fault Conditions 

    The park lock pawl solenoid holds the vehicle out of park during short duration engine off events (start-stop events or stay in neutral mode). The spring loaded solenoid pin is extended at zero voltage, but retracts when force is applied against the pin. The force required to retract the pin increases as voltage is applied.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    PCM P07E4:00 Unable to Engage Park: No Sub Type Information The PCM commanded Park, but movement timed out and the TR sensor does not read Park.
    PCM P07E6:00 Stuck in Park: No Sub Type Information The PCM commanded a movement out of Park, but movement timed out and the TR sensor still reads Park.
    PCM P2888:00 Park Lock/Pawl Actuator Circuit/Open: No Sub Type Information The PCM detected an open circuit fault in the park lock pawl solenoid or circuitry.
    PCM P2889:00 Park Lock/Pawl Actuator Circuit Low: No Sub Type Information The PCM detected a short to ground fault in the park lock pawl solenoid or circuitry.
    PCM P288A:00 Park Lock/Pawl Actuator Circuit High: No Sub Type Information The PCM detected a short to power fault in the park lock pawl solenoid or circuitry.
    PCM P288B:00 Park Lock/Pawl Actuator Circuit Performance: No Sub Type Information This DTC indicates a non-electrical fault causing the park lock pawl solenoid to be stuck off. This DTC sets if the park system returns to park uncommanded while the vehicle is in stay in neutral mode or during a start-stop event.

    Possible Causes 

    • Connectors damaged or pushed-out terminals, corrosion, loose wires or ground and missing or damaged seals
    • Park lock pawl solenoid
    • PCM
    • Contamination sticking Park Servo Valve in Park

  2. I1 RETRIEVE AND RECORD ALL DTCS

    • Using the diagnostic scan tool, retrieve all DTC s.

    Are DTC s DTCS P07E4, P07E6, P2888, P2889, P288A, P288B present? 

    Yes  For DTC P07E4, GO to  I2 For DTC P07E6, GO to  I11For DTC s DTC s P2888, P2889, P288A, P288B, GO to  I3
    No  If no DTC s are set but a symptom is present, REFER to: Diagnosis By Symptom 
    If there are no DTC s and no symptoms present, the system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or terminal issues.

  3. I2 CONFIRM TRANSMISSION PARK IS NOT MANUALLY OVERRIDDEN

    • Connect the diagnostic tool.

    • Ignition ON.

    • Using the diagnostic scan tool monitor the PID TR_PARK_STAT.

    Does the PID TR_PARK_STAT indicate the transmission is in mechanical override? 

    Yes  REMOVE the transmission from mechanical override. REFER to: TRANSMISSION PARK MANUAL RELEASE CABLE - VEHICLES BUILT UP TO: 29-OCTOBER-2023
    No  GO to  I11

  4. I3 CHECK THE PARK LOCK PAWL SOLENOID TASV CIRCUIT FOR POWER

    • Ignition OFF.

    • Disconnect Transmission Vehicle Harness C1520.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1520 Pin 15
      GFD826403Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  GO to  I6
    No  GO to  I4

  5. I4 CHECK THE PARK LOCK PAWL SOLENOID TASV CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.

    Is the resistance less than 3 ohms? 

    Yes  GO to  I5
    No  REPAIR the circuit.

  6. I5 CHECK THE PARK LOCK PAWL SOLENOID TASV CIRCUIT FOR A SHORT TO GROUND

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1520 Pin 15
      GFD826402Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes 
    GFD826404Courtesy of FORD MOTOR COMPANY

    Guided Routine (PCM) only available in the on-line OEM Service Information
    No  REPAIR the circuit.

  7. I6 CHECK THE PARK LOCK PAWL SOLENOID CONTROL CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Disconnect Transmission Harness Connector C1520 (if not already disconnected).

    • Disconnect: PCM C1551E

    • Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.

    Is the resistance less than 3 ohms? 

    Yes  GO to  I7
    No  REPAIR the circuit.

  8. I7 CHECK THE PARK LOCK PAWL SOLENOID CONTROL CIRCUIT FOR A SHORT TO GROUND

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1520 Pin 18
      GFD826402Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  I8
    No  REPAIR the circuit.

  9. I8 CHECK THE PARK LOCK PAWL SOLENOID CONTROL CIRCUIT FOR A SHORT TOGETHER WITH THE POWER CIRCUITS

    • Disconnect: PCM C1551B

    • Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  I9
    No  REPAIR the circuit

  10. I9 CHECK THE INTERNAL WIRING HARNESS FOR AN OPEN

    • Disconnect Park Lock Pawl Solenoid C177.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C177 Pin 1
      GFD826402Courtesy of FORD MOTOR COMPANY
      GFD829062Courtesy of FORD MOTOR COMPANY

      Transmission Harness Connector, component side, pin 15
      C177 Pin 2
      GFD826402Courtesy of FORD MOTOR COMPANY
      GFD829062Courtesy of FORD MOTOR COMPANY

      Transmission Harness Connector, component side, pin 18

    Are the resistances less than 3 ohms? 

    Yes  GO to  I10
    No  INSTALL a new internal wiring harness. REFER to: Main Control Valve Body .

  11. I10 CHECK THE INTERNAL WIRING HARNESS FOR A SHORT TO GROUND

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C177 Pin 1
      GFD826402Courtesy of FORD MOTOR COMPANY
      		 Ground
      C177 Pin 2
      GFD826402Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  I11
    No  INSTALL a new internal wiring harness. REFER to: Main Control Valve Body .

  12. I11 CHECK THE PARK LOCK PAWL SOLENOID

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      GFD829064Courtesy of FORD MOTOR COMPANY

      Park Lock Pawl Solenoid (Component side) pin 1.
      GFD826402Courtesy of FORD MOTOR COMPANY
      GFD829064Courtesy of FORD MOTOR COMPANY

      Park Lock Pawl Solenoid (Component side) pin 2.

    Is the resistance between 18 and 20 ohms? 

    Yes  GO to  I12
    No  INSTALL a new park lock pawl solenoid. REFER to: Main Control Valve Body .

  13. I12 CHECK THE PARK LOCK PAWL SOLENOID OPERATION

    • Ignition OFF.

    • Connect Transmission Harness Connector C1520.

    • Connect Park Lock Pawl Solenoid C177.

    • Remove the park lock pawl solenoid, leaving the wiring harness connected.

    • Push the park lock pawl solenoid pin with the ignition ON and OFF.

    Does the park lock pawl solenoid pin resist motion with the ignition ON and move with the ignition OFF? 

    Yes  The park by wire system is working correctly at this time. If a symptom is present, Engagement Quality-Park Symptom, REFER to: Diagnosis By Symptom .
    No  INSTALL a new park lock pawl solenoid. REFER to: Main Control Valve Body .
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