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Home >> Ford >> 2022 >> Transit Connect Titanium, Gas/Ethanol >> Repair and Diagnosis >> External Pages >> Different car >> Section 392 (Automatic Transmission - 6-Speed Automatic Transmission - 6R80) >> Diagnosis And Testing >> DTC Chart and Pinpoint Tests - 3.3L Duratec-V6 >> Pinpoint Tests >> Pinpoint Test F : DTCS P0C2A:00, P0C2C:00, P0C2D:00, P0C2E:00, P2796:00

Pinpoint Test F : DTCS P0C2A:00, P0C2C:00, P0C2D:00, P0C2E:00, P2796:00

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  1. Refer to Transmission Controls - 6R80 for schematic and connector information.

    Normal Operation and Fault Conditions 

    The electric transmission fluid auxiliary pump is used to keep the transmission engaged when the engine is stopped and the transmission is in drive. The electric transmission fluid auxiliary pump has an internal microprocessor and communicates with the PCM over a PWM circuit with a frequency of 150 Hz and a duty cycle range of 10% to 90%.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    PCM P0B0D:00 Electric/Auxiliary Transmission Fluid Pump Motor Control Module: No Sub Type Information This DTC sets if the E-pump communication is OK. The frequency is between 130 Hz and 170 Hz and a valid duty cycle was detected (54% to 61% or 64% to 71%). The transmission fluid auxiliary pump has detected a pump over or under speed condition. The current flow through the pump was within specification.
    PCM P0C27:00 Electric/Auxiliary Transmission Fluid Pump "A" Motor Current Low: No Sub Type Information This DTC sets if the E-pump communication is OK. The frequency is between 130 Hz and 170 Hz but a low current is detected (10% to 15% duty cycle).
    PCM P0C28:00 Electric/Auxiliary Transmission Fluid Pump "A" Motor Current High: No Sub Type Information This DTC sets if the E-pump communication is OK. The frequency is between 130 Hz and 170 Hz but a low current is detected (20% to 25% duty cycle).
    PCM P0C29:00 Electric/Auxiliary Transmission Fluid Pump "A" Driver Circuit Performance: No Sub Type Information This DTC sets if the E-pump communication is OK. The frequency is between 130 Hz and 170 Hz but a high current is detected.
    PCM P0C2A:00 Electric/Auxiliary Transmission Fluid Pump "A" Motor Stalled: No Sub Type Information This DTC sets if the PCM commands the electric transmission fluid pump motor on and does not detect a corresponding increase in pump pressure, indicating a stalled pump motor.
    PCM P0C2C:00 Electric Transmission Fluid Pump Control Module Feedback Signal Range/Performance: No Sub Type Information This DTC sets if the E-pump communication is OK. The frequency is between 130 Hz and 170 Hz but the duty cycle does not match one of the defined duty cycle ranges.
    PCM P0C2D:00 Electric Transmission Fluid Pump Control Module Feedback Signal Low: No Sub Type Information This DTC sets if the duty cycle is less than 10%.
    PCM P0C2E:00 Electric Transmission Fluid Pump Control Module Feedback Signal High: No Sub Type Information This DTC sets if the duty cycle is greater than 90%.
    PCM P175A:00 Transmission Fluid Over Temperature Condition - Electric Transmission Fluid Pump Disabled: No Sub Type Information This DTC sets if the E-pump communication is OK. The frequency is between 130 Hz and 170 Hz but an over temperature condition is detected (30% to 34% duty cycle).
    PCM P2796:00 Electric Transmission Fluid Pump Control Circuit: No Sub Type Information This DTC sets when the E-pump is not receiving a signal on it's PWM input signal from the PCM.

    Possible Sources 

    • Connectors damaged or pushed-out terminals, corrosion, loose wires or ground and missing or damaged seals
    • BJB fuses
    • Transmission fluid auxiliary pump
    • PCM

  2. F1 RETRIEVE AND RECORD ALL DTCS

    • Refer to the following table for DTC duty cycle ranges.
      DTC  Duty Cycle Range  Description 
      P0C2D Less than 10% Out of range Low
      P0C27 10% to 15% Pump current too Low, Speed OK
      P0C28 19% to 26% Pump Current Too High, Speed OK
      P175A 29% to 35% Pump Over Temperature
      P0C2A 35% to 41% Pump Stalled
      NONE  44% to 51% EVERYTHING IS OK - NORMAL VALUE OF SIGNAL
      P0B0D 54% to 61% Pump Over Speed - current OK
      P0B0D 64% to 71% Pump Under Speed - current OK
      P0C29 74% to 81% Both Current and Speed out of range
      P2796 84% to 90% No Command received from Control Module
      P0C2E Greater than 90% Duty Cycle Out of range HI - undefined
      P0C2C Any other value (between) Undefined duty cycle

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

    Are diagnostic trouble codes (DTCs) P0C2A, P0C2C, P0C2D, P0C2E and/or P2796 present? 

    Yes  For DTC P2796, GO to  F7 For diagnostic trouble codes (DTCs) P0C2A, P0C2C, P0C2D and/or P0C2E, GO to  F2
    No  For diagnostic trouble codes (DTCs) P0B0D, P0C27, P0C28, P0C29, and/or P175A, GO to Pinpoint Test G  Otherwise, 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. F2 CHECK THE TRANSMISSION FLUID AUXILIARY PUMP POWER CIRCUITS

    • Ignition OFF.

    • Disconnect Transmission fluid auxiliary pump C1717.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1717-1
      GFD463463Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1717-2
      GFD463463Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the voltages greater than 11 volts? 

    Yes  GO to  F3
    No  VERIFY BJB fuses 82 (30A) and 98 (15A) are OK. If fuses are OK, REFER to the OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION to identify and repair an open circuit. If fuses are not OK, REFER to the OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION to identify and repair a short to ground.

  4. F3 CHECK THE TRANSMISSION FLUID AUXILIARY PUMP GROUND CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1717-6
      GFD463464Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance less than 3 ohms? 

    Yes  For DTC P0C2A, GO to Pinpoint Test G  For all other diagnostic trouble codes (DTCs), GO to  F4
    No  REPAIR the circuit

  5. F4 CHECK THE TRANSMISSION FLUID AUXILIARY PUMP FEEDBACK / MONITOR CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Disconnect PCM C1551T.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1717-5
      GFD463464Courtesy of FORD MOTOR COMPANY
      		 C1551T-39

    Is the resistance less than 3 ohms? 

    Yes  GO to  F5
    No  REPAIR the circuit.

  6. F5 CHECK THE TRANSMISSION FLUID AUXILIARY PUMP FEEDBACK / MONITOR CIRCUIT FOR A SHORT TO GROUND

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1717-5
      GFD463464Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  F6
    No  REPAIR the circuit.

  7. F6 CHECK THE TRANSMISSION FLUID AUXILIARY PUMP FEEDBACK / MONITOR CIRCUIT FOR A SHORT TO POWER

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1717-5
      GFD463463Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage detected? 

    Yes  REPAIR the circuit.
    No  GO to  F7

  8. F7 CHECK THE TRANSMISSION FLUID AUXILIARY PUMP COMMAND CIRCUIT FOR A SHORT TO POWER

    • Ignition OFF.

    • Disconnect PCM C1551T (if not already disconnected).

    • Disconnect Transmission fluid auxiliary pump C1717 (if not already disconnected).

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1717-4
      GFD463463Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage detected? 

    Yes  REPAIR the circuit.
    No  GO to  F8

  9. F8 CHECK THE TRANSMISSION FLUID AUXILIARY PUMP COMMAND CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1717-4
      GFD463464Courtesy of FORD MOTOR COMPANY
      		 C1551T-6

    Is the resistance less than 3 ohms? 

    Yes  GO to  F9
    No  REPAIR the circuit.

  10. F9 CHECK THE TRANSMISSION FLUID AUXILIARY PUMP COMMAND CIRCUIT FOR A SHORT TO GROUND

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1717-4
      GFD463464Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  F10
    No  REPAIR the circuit.

  11. F10 CHECK THE TRANSMISSION FLUID AUXILIARY PUMP DUTY CYCLE OPERATION

    • Connect PCM C1551T.

    • Connect Transmission fluid auxiliary pump C1717.

    • Connect the diagnostic tool.

    • Ignition ON.

    • Using a diagnostic scan tool, MONITOR the PIDs, TRANS_PMP_MEAS, TRANS_PMP_CMD.

    • COMMAND the transmission fluid auxiliary pump ON using OSC TRANS_PMP_CMD and INCREASE the duty cycle to 70% to 80%.

    Does TRANS_PMP_MEAS quickly return to 44% to 51% after the command percentage changes? 

    Yes  The transmission fluid auxiliary pump is operating correctly at this time.
    No  INSTALL a new transmission fluid auxiliary pump. REFER to: Transmission Fluid Auxiliary Pump .
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