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Home >> Ford >> 2021 >> Explorer Limited Hybrid, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Automatic Transmission - 10-Speed Automatic Transmission - 10R60 (1 Of 3)) >> Diagnosis And Testing >> DTC Chart and Pinpoint Tests - 2.3L EcoBoost (201kW/273PS) >> Pinpoint Tests >> Pinpoint Test I : Park Lock Pawl Solenoid

Pinpoint Test I : Park Lock Pawl Solenoid

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

    Normal Operation and Fault Conditions 

    The park lock pawl solenoid locks the park lock pawl valve when energized, either in the park position or the out of park position. The park lock pawl solenoid is locked in the extended position when voltage is applied to it and able to be retracted when the voltage is not applied. This solenoid is used to keep the vehicle out of park during stop start events and in stay in neutral mode.

    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 park lock pawl actuator circuit performance detects that the movement to Park timed out.
    PCM P07E6:00 Stuck in Park: No Sub Type Information This DTC sets if the PCM detects the transmission is stuck in Park. This may indicate a stuck park lock pawl solenoid (pin stuck), B or D clutch stuck off, line pressure stuck low, sticking park servo valve (possible contamination), park system hardware fault.
    PCM P2888:00 Park Lock/Pawl Actuator Circuit/Open: No Sub Type Information This DTC sets if the PCM detects a open circuit fault or poor connection in the park lock pawl solenoid wiring, or a faulty park lock pawl solenoid.
    PCM P2889:00 Park Lock/Pawl Actuator Circuit Low: No Sub Type Information This DTC sets if the PCM detects a short to ground circuit fault in the park lock pawl solenoid wiring, or a faulty park lock pawl solenoid.
    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 

    • Park is manually released
    • Low line pressure
    • Circuit open or shorted
    • Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
    • Transmission internal wiring harness
    • Park lock pawl solenoid
    • PCM

  2. I1 RETRIEVE AND RECORD ALL DIAGNOSTIC TROUBLE CODES (DTCS)

    • Using a diagnostic scan tool, retrieve all diagnostic trouble codes (DTCs) from the PCM.

    Are diagnostic trouble codes (DTCs) P07E4, P07E6, P2888, P2889, P288A, P288B present? 

    Yes  If diagnostic trouble codes (DTCs) P2888, P2889, P288A, P288B are present, RESOLVE those first. GO to  I4 For DTC P07E4, GO to  I2 For DTC P07E6, GO to  I3
    No  If no diagnostic trouble codes (DTCs) are set, but a symptom is present, REFER to: Diagnosis By Symptom . If there are no diagnostic trouble codes (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. I2 CONFIRM PARK IS NOT MANUALLY OVERRIDDEN

    • Access the PCM and monitor the TR_PARK_STATPID

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

    Yes  Remove the transmission from mechanical Park override. REFER to: Transmission Park by Wire Manual Release .
    No  GO to  I4

  4. I3 CHECK LINE PRESSURE

    NOTE: The shift-by-wire variant of the 10R transmission uses hydraulic pressure to move the park lock pawl valve out of park.

    Is line pressure within specification? 

    Yes  GO to  I4
    No  Use the Line Pressure Diagnosis Chart for further diagnosis. REFER to: Special Testing Procedures .

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

    • Ignition OFF.

    • Disconnect Transmission vehicle harness C168A.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C168A-12
      GFD514072Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  GO to  I7
    No  GO to  I5

  6. I5 CHECK THE PARK LOCK PAWL SOLENOID TASV CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Disconnect PCM C1381E.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C168A-12
      GFD514073Courtesy of FORD MOTOR COMPANY
      		 C1381E-95

    Is the resistance less than 3 ohms? 

    Yes  GO to  I6
    No  REPAIR the open circuit.

  7. I6 CHECK THE PARK LOCK PAWL SOLENOID TASV CIRCUIT FOR A SHORT TO GROUND

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C168A-12
      GFD514073Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  Refer to PCM Guided Routine Testing .
    After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download .
    No  REPAIR the short to ground.

  8. I7 CHECK THE PARK LOCK PAWL SOLENOID CONTROL CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Disconnect PCM C1381E.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C168A-26
      GFD514073Courtesy of FORD MOTOR COMPANY
      		 C1381E-87

    Is the resistance less than 3 ohms? 

    Yes  GO to  I8
    No  REPAIR the open circuit.

  9. I8 CHECK THE PARK LOCK PAWL SOLENOID CONTROL CIRCUIT FOR A SHORT TO GROUND

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C168A-26
      GFD514073Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  I9
    No  REPAIR the short to ground.

  10. I9 CHECK THE TRANSMISSION INTERNAL WIRING HARNESS FOR AN OPEN

    • Disconnect Park lock pawl solenoid C178.

    • Disconnect Transmission fluid auxiliary pump C1792.

    • Connect Transmission vehicle harness C168A.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C178-1
      GFD514073Courtesy of FORD MOTOR COMPANY
      		 C1381E-95
      C178-2
      GFD514073Courtesy of FORD MOTOR COMPANY
      		 C1381E-87

    Are the resistances less than 3 ohms? 

    Yes  GO to  I10
    No  INSTALL a new transmission internal wiring harness (both pieces). REFER to: Transmission Internal Wiring Harness .

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

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C178-1
      GFD514073Courtesy of FORD MOTOR COMPANY
      		 Ground
      C178-2
      GFD514073Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  I11
    No  INSTALL a new transmission internal wiring harness (both pieces). REFER to: Transmission Internal Wiring Harness .

  12. I11 CHECK THE RESISTANCE OF THE PARK LOCK PAWL SOLENOID

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      GFD514075Courtesy of FORD MOTOR COMPANY

      Park lock pawl solenoid component side pin 1
      GFD514073Courtesy of FORD MOTOR COMPANY
      GFD514075Courtesy of FORD MOTOR COMPANY

      Park lock pawl solenoid component side pin 2

    Is the resistance between 17 and 27 ohms? 

    Yes  GO to  I12
    No  INSTALL a new park lock pawl solenoid. REFER to: Park Lock Pawl Solenoid .

  13. I12 CHECK THE PARK LOCK PAWL SOLENOID FOR A SHORT TO GROUND

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      GFD514075Courtesy of FORD MOTOR COMPANY

      Park lock pawl solenoid component side pin 1
      GFD514073Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  I13
    No  INSTALL a new park lock pawl solenoid. REFER to: Park Lock Pawl Solenoid .

  14. I13 CHECK PARK LOCK PAWL SOLENOID OPERATION

    • Ignition OFF.

    • Connect PCM C1381E.

    • Connect Park lock pawl solenoid C178.

    • Connect Transmission fluid auxiliary pump C1792.

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

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

    Yes  The park lock pawl solenoid is operating correctly at this time. For DTC P2888, P2889 and/or P288A, INSPECT and CONNECT all electrical connectors, CLEAR the DTC, then CARRY OUT the KOEO PCM self-test. If DTC P2888, P2889 and/or P288A returns, Refer to PCM GUIDED ROUTINE TESTING
    After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download . For DTC P07E4, P07E6, and/or P288B, RESOLVE the park engagement symptom. REFER to: Diagnosis By Symptom .
    No  INSTALL a new park lock pawl solenoid. REFER to: Park Lock Pawl Solenoid .
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