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Home >> Ford >> 2018 >> Focus SEL, 4D Hatchback >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 32 (Automatic Transmission - 6-Speed Automatic Transmission - 6F15 (2 Of2)) >> Diagnosis And Testing >> Automatic Transmission - 6-Speed Automatic Transmission - 6F15 >> Pinpoint Tests >> Pinpoint Test F : DTC P0657

Pinpoint Test F : DTC P0657

WARNING: This page is about a different variant/trim than selected.
  1. Refer to Transmission Controls - 6F15 for schematic and connector information.

    Normal Operation and Fault Conditions 

    The transmission solenoid power control relay controls vehicle power to all solenoids. Power is routed through the transmission solenoid power control relay (inside the PCM) to all transmission solenoids. If the power circuit to the transmission solenoids or the transmission solenoid power control relay fails open, all solenoids are failed electrically off. Check for open, short to ground or the transmission connector disconnected.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    PCM P0657:00 Actuator Supply Voltage "A" Circuit/Open: No Sub Type Information Open circuit on the transmission solenoid power circuit.

    Possible Sources 

    • Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
    • Transmission internal wiring harness frame
    • PCM

  2. F1 RETRIEVE AND RECORD ALL DTCS

    • Using the diagnostic scan tool, retrieve all DTCs.

    Is DTC P0657 present? 

    Yes  GO to  F2
    No  If any symptoms are present, REFER to: Diagnosis By Symptom .

  3. F2 CHECK THE TRANSMISSION SOLENOID POWER CONTROL CIRCUIT

    • Ignition OFF.

    • Disconnect Transmission vehicle harness C1520A.

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

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1520A-5
      GFD440702Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is voltage greater than 11 volts? 

    Yes  GO to  F5
    No  GO to  F3

  4. F3 CHECK THE TRANSMISSION SOLENOID POWER CONTROL CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Disconnect PCM C1915E.

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

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1520A-5
      GFD440709Courtesy of FORD MOTOR COMPANY
      		 C1915E-80

    Is the resistance less than 3 ohms? 

    Yes  GO to  F4
    No  REPAIR the circuit.

  5. F4 CHECK THE TRANSMISSION SOLENOID POWER CONTROL CIRCUIT FOR A SHORT TO GROUND

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1520A-5
      GFD440709Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  Refer to PCM Guided Routine Testing . CARRY OUT the Transmission Strategy Download, REFER to: Transmission Strategy Download .
    No  REPAIR the circuit.

  6. F5 CHECK THE TRANSMISSION INTERNAL WIRING HARNESS FRAME

    • Remove the transmission internal wiring harness frame. REFER to: Transmission Internal Wiring Harness Frame . Inspect for metal shavings on the exposed metal contacts or other components and clean the solenoid and transmission internal wiring harness frame terminals.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      Transmission internal wiring harness frame pin 5.
      GFD440709Courtesy of FORD MOTOR COMPANY
      		 Transmission internal wiring harness frame all pin fives.

    Is the resistance less than 3 ohms? 

    Yes  Refer to PCM Guided Routine Testing . CARRY OUT the Transmission Strategy Download, REFER to: Transmission Strategy Download .
    No  INSTALL a new transmission internal wiring harness frame. REFER to: Transmission Internal Wiring Harness Frame .
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