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Home >> Lincoln >> 2019 >> Nautilus Base, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Automatic Transmission - 8-Speed Automatic Transmission - 8F57 (2 Of 2)) >> Diagnosis And Testing >> DTC Chart and Pinpoint Tests - 2.7L EcoBoost (238kW/324PS) >> Pinpoint Tests >> Pinpoint Test H : DTCS P07E4, P07E6, P2888, P2889, P288A, P288B

Pinpoint Test H : DTCS P07E4, P07E6, P2888, P2889, P288A, P288B

WARNING: This page is about a different variant/trim than selected.
  1. Refer to Transmission Controls - 8F35 for schematic and connector information.

    Normal Operation and Fault Conditions 

    The park lock pawl solenoid locks the park lock pawl valve and linkage when energized, either in the park position or the out of park position. The park lock pawl solenoid is extended when voltage is applied to it and retracted when the voltage is not applied. This solenoid is used to allow the transmission to be locked into park and shifted out of park. It also is used during a stop start event to keep the vehicle out of park.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    PCM P07E4:00 Unable to Engage Park: No Sub Type Information This DTC sets if the PCM detects that the movement to Park timed out.
    PCM P07E6:00 Stuck in Park: No Sub Type Information This DTC sets if the detects that the movement out of Park timed out.
    PCM P2888:00 Park Lock/Pawl Actuator Circuit/Open: No Sub Type Information This DTC sets if the PCM detects 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 This DTC sets if the PCM detects an short to ground circuit fault in the park lock pawl solenoid or circuitry.
    PCM P288A:00 Park Lock/Pawl Actuator Circuit High: No Sub Type Information This DTC sets if the PCM detects a short to power circuit fault in the park lock pawl solenoid or circuitry.
    PCM P288B:00 Park Lock/Pawl Actuator Circuit Performance: No Sub Type Information This DTC sets if the PCM detects a circuit fault in the park lock pawl solenoid or circuitry and the park lock pawl solenoid is functionally stuck off. This DTC may also be set when the driver selects the stay in neutral mode and the system recognizes that the system cannot keep the park valve locked out of park. Under these conditions the park valve returns to the park position uncommanded. A start stop event was attempted but the park lock pawl solenoid did not keep the transmission out of park disabling the start stop function.

    Possible Sources 

    • Connectors damaged or pushed-out terminals, corrosion, loose wires or ground and missing or damaged seals
    • Park Lock Pawl Solenoid
    • PCM

  2. H1 RETRIEVE AND RECORD ALL DTCS

    • Using the diagnostic scan tool, retrieve all DTCs.

    Are DTCs P07E4, P07E6, P2888, P2889, P288A, P288B present? 

    Yes  For DTC P07E4, GO to  H2 FOR DTC, P07E6, GO to  H12 For DTCs P2888, P2889, P288A, P288B, GO to  H3
    No  If no DTCs are set and a symptom is present, REFER to: Diagnosis By Symptom  . If there are no DTCs 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. H2 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 by Wire Manual Release .
    No  GO to  H12

  4. H3 CHECK THE TASV CIRCUIT FOR POWER

    • Ignition OFF.

    • Disconnect Transmission Vehicle Harness C1575.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1575-16
      GFD425661Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  GO to  H7
    No  GO to  H4

  5. H4 CHECK THE TRANSMISSION HARNESS FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1575-16
      GFD425660Courtesy of FORD MOTOR COMPANY
      		 C1551T-17

    Is the resistance less than 3 ohms? 

    Yes  GO to  H5
    No  REPAIR the circuit

  6. H5 CHECK THE TRANSMISSION HARNESS FOR A SHORT TO GROUND

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1575-16
      GFD425660Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  H6
    No  REPAIR the circuit.

  7. H6 CHECK THE TRANSMISSION HARNESS FOR A SHORT TO POWER

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1575-16
      GFD425661Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage detected? 

    Yes  REPAIR the circuit
    No  Refer to PCM Guided Routine .

  8. H7 CHECK THE PARK LOCK PAWL SOLENOID GROUND CIRCUIT

    • Ignition OFF.

    • Disconnect Transmission Harness Connector C1575 (If not already disconnected).

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1575-19
      GFD425661Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage 11 volts or greater? 

    Yes  GO to  H8
    No  REPAIR the circuit.

  9. H8 CHECK INTERNAL HARNESS FOR AN OPEN

    • Disconnect Park Lock Pawl Solenoid C177.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C177-1
      GFD425660Courtesy of FORD MOTOR COMPANY
      GFD427715Courtesy of FORD MOTOR COMPANY

      Transmission harness connector, component side, pin 16
      C177-2
      GFD425660Courtesy of FORD MOTOR COMPANY
      GFD427715Courtesy of FORD MOTOR COMPANY

      Transmission harness connector, component side, pin 19

    Are the resistances less than 3 ohms? 

    Yes  GO to  H10
    No  REPAIR the circuit

  10. H9 CHECK INTERNAL HARNESS FOR A SHORT TO GROUND

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C177-1
      GFD425660Courtesy of FORD MOTOR COMPANY
      		 Ground
      C177-2
      GFD425660Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  H10
    No  REPAIR the circuit

  11. H10 CHECK THE INTERNAL WIRING HARNESS GROUND CIRCUIT FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C177-2
      GFD425660Courtesy of FORD MOTOR COMPANY
      GFD427715Courtesy of FORD MOTOR COMPANY

      Transmission harness connector, component side, pin 19

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  H11
    No  REPAIR the circuit

  12. H11 CHECK THE INTERNAL WIRING HARNESS GROUND CIRCUIT FOR A SHORT TO POWER

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C177-2
      GFD425661Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage detected? 

    Yes  REPAIR the circuit
    No  GO to  H12

  13. H12 CHECK PARK LOCK PAWL ACTUATOR

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      Park Lock Pawl Solenoid (Component side) pin 1.
      GFD425660Courtesy of FORD MOTOR COMPANY
      		 Park Lock Pawl Solenoid (Component side) pin 2.

    Is the resistance between 18 to 20 ohms? 

    Yes  GO to  H13
    No  INSTALL a new park lock pawl solenoid. REFER to: Main Control Valve Body  .

  14. H13 CHECK PARK LOCK PAWL ACTUATOR OPERATION

    • Ignition OFF.

    • Connect Transmission Harness Connector C1575.

    • Connect PCM C1551T.

    • Connect Park Lock Pawl Solenoid C177.

    • Disconnect 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 symptoms exist, REFER to: Diagnosis By Symptom  .
    No  INSTALL a new park lock pawl solenoid. REFER to: Main Control Valve Body  .
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