Ford Fusion Manuals

Ford Fusion: Front End Body Panels / Active Grille Shutter. Diagnosis and Testing

DTC Chart: Powertrain Control Module (PCM)

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  Powertrain Control Module (PCM) DTC Chart


DTC Description Action
P059F Active Grille Air Shutter "A" Performance / Stuck Off   GO to Pinpoint Test A
P05A1 Active Grille Air Shutter "A" Position Sensor Minimum / Maximum Stop Performance   GO to Pinpoint Test A
P05A2 Active Grille Air Shutter "A" Control Circuit / Open   GO to Pinpoint Test A
P05A7 Active Grille Air Shutter Control Module "A" Supply Voltage Circuit Low   GO to Pinpoint Test A
P05C0 Active Grille Air Shutter Module “A” Over Temperature   GO to Pinpoint Test A
U0046 Vehicle Communication Bus C   GO to Pinpoint Test A
U0284 Lost Communication With Active Grille Air Shutter Module "A"   GO to Pinpoint Test A
All other Diagnostic Trouble Codes (DTCs) -   Refer to the appropriate section in Group 303 for the procedure.

Symptom Chart(s)

Symptom Chart: Active Grille Shutter

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  Symptom Chart


Condition Possible Sources Actions
The active grille shutter is inoperative or does not operate correctly Refer to the Pinpoint Test   GO to Pinpoint Test A

Pinpoint Test(s)

The Active Grille Shutter is Inoperative or Does Not Operate Correctly


Refer to Wiring Diagrams Cell 33 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Active Grille Shutter - System Operation and Component Description (501-02 Front End Body Panels, Description and Operation).

Possible Sources

  • Fuse
  • Wiring, terminals or connectors
  • Grille shutter actuator
  • Active grille shutter
  • PCM

  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
P059F Active Grille Air Shutter "A" Performance / Stuck Off When the grille shutter actuator senses it is unable to move the grille shutter, it sends a message to the PCM via the LIN. The PCM sets this DTC when the fault is communicated for a predetermined amount of time.
P05A1 Active Grille Air Shutter "A" Position Sensor Minimum / Maximum Stop Performance When the grille shutter actuator senses it is unable to obtain a fully open or closed position of the grille shutter, it sends a message to the PCM via the LIN. The PCM then sets the DTC when the fault is communicated for a predetermined amount of time.
P05A2 Active Grille Air Shutter "A" Control Circuit / Open This DTC sets when the grille shutter actuator control circuit H-Bridge is overheated or if a short to ground or open is detected in the actuator control circuit. The PCM sets this DTC when the condition is present for a predetermined amount of time.
P05A7 Active Grille Air Shutter Control Module "A" Supply Voltage Circuit Low When the grille shutter actuator senses low voltage, it sends a message to the PCM via the LIN. The PCM sets this DTC when the fault is communicated for a predetermined amount of time.
P05C0 Active Grille Air Shutter Module “A” Over Temperature This DTC sets when the grille shutter actuator temperature exceeds a certain threshold. An overtemperature condition may cause permanent internal damage to the grille shutter actuator. DTC P05A2 may also be set when an overtemperature condition occurs.
U0046 Vehicle Communication Bus C This DTC sets when the PCM detects a short to voltage, ground or open in the LIN.
U0284 Lost Communication With Active Grille Air Shutter Module "A" When the PCM does not receive communication from the grille shutter actuator for a predetermined amount of time, the PCM sets this DTC.

Visual Inspection and Diagnostic Pre-checks

  • Verify BJB fuse 12 (15A) is OK.
  • Make sure the grille opening does not have any debris or other obstructions that inhibit operation of the grille shutter.
  • Make sure the grille shutter actuator electrical connector is not disconnected.

PINPOINT TEST A : THE ACTIVE GRILLE SHUTTER IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY
A1 RETRIEVE THE PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Using a diagnostic scan tool, perform PCM self-test.

Is DTC DTC P05A7, U0046 or U0284 present?
Yes GO to A2
No For DTC P05A2 or P05C0, GO to A4
For DTC P059F or P05A1, GO to A9
For all other PCM Diagnostic Trouble Codes (DTCs), Refer to the appropriate section in Group 303 for the procedure.

A2 CHECK THE VOLTAGE SUPPLY TO THE GRILLE SHUTTER ACTUATOR
  • Ignition OFF.
  • Disconnect: Grille Shutter Actuator C1651.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1651-3 Ford Fusion. Active Grille Shutter. Diagnosis and Testing   Ground

Is the voltage greater than 11 volts?
Yes GO to A3
No VERIFY BJB fuse 12 (15A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the cause of the circuit short.

A3 CHECK THE GRILLE SHUTTER ACTUATOR GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1651-1 Ford Fusion. Active Grille Shutter. Diagnosis and Testing   Ground

Is the resistance less than 3 ohms?
Yes For DTC U0046 or U0284, GO to A4
For DTC P05A7, GO to A11
No REPAIR the circuit.

A4 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: Grille Shutter Actuator C1651 (if not previously disconnected).
  • Disconnect: PCM C1915B (1.5L), C1232B (1.6L), C1381B (2.0L Gas), C175E (Hybrid), C1551B (2.5L) or C175B (3.7L).
  • For 1.5L, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1651-2 Ford Fusion. Active Grille Shutter. Diagnosis and Testing   C1915B-50
  • For 1.6L, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1651-2 Ford Fusion. Active Grille Shutter. Diagnosis and Testing   C1232B-50
  • For 2.0L gas, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1651-2 Ford Fusion. Active Grille Shutter. Diagnosis and Testing   C1381B-50
  • For hybrid, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1651-2 Ford Fusion. Active Grille Shutter. Diagnosis and Testing   C175E-39
  • For 2.5L, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1651-2 Ford Fusion. Active Grille Shutter. Diagnosis and Testing   C1551B-55
  • For 3.7L, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1651-2 Ford Fusion. Active Grille Shutter. Diagnosis and Testing   C175B-55

Is the resistance less than 3 ohms?
Yes GO to A5
No REPAIR the circuit.

A5 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1651-2 Ford Fusion. Active Grille Shutter. Diagnosis and Testing   Ground

Is any voltage present?
Yes For hybrid vehicles only, GO to A6 For all other vehicles, REPAIR the circuit.
No GO to A7

A6 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE WITH THE COOLANT PUMP DISCONNECTED
  • Ignition OFF.
  • Disconnect: Coolant Pump C1812.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1651-2 Ford Fusion. Active Grille Shutter. Diagnosis and Testing   Ground

Is any voltage present?
Yes REPAIR the circuit.
No INSTALL a new coolant pump.

A7 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1651-2 Ford Fusion. Active Grille Shutter. Diagnosis and Testing   Ground

Is the resistance greater than 10,000 ohms?
Yes For DTC U0046 or U0248, GO to A12 For all other Diagnostic Trouble Codes (DTCs), GO to A11
No For hybrid vehicles only, GO to A8 For all other vehicles, REPAIR the circuit.

A8 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND WITH THE COOLANT PUMP DISCONNECTED
  • Disconnect: Coolant Pump C1812.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1651-2 Ford Fusion. Active Grille Shutter. Diagnosis and Testing   Ground

Is the resistance greater than 10,000 ohms?
Yes INSTALL a new coolant pump.
No REPAIR the circuit.

A9 VERIFY THE GRILLE SHUTTER OPERATION USING THE GRILLE SHUTTER A POSITION - COMMANDED (GRILL_A_CMD) PARAMETER IDENTIFICATION (PID)
  • Start the engine and allow it to idle for at least 30 seconds to allow for the grille shutter calibration to complete.
  • Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs).
  • Using a diagnostic scan tool, select the PCM GRILL_A_CMD Parameter Identification (PID) and active command the grille shutter from 100% (open) to 0% (closed) while observing the grille shutter operation from the front of the vehicle.

Does the grille shutter fully open and close when commanded by the diagnostic scan tool?
Yes The grille shutter system is operating correctly at this time. The concern may have been caused by the grille shutter actuator electrical connector. INSPECT the electrical connector and REPAIR or REPLACE as necessary.
No GO to A10

A10 CHECK THE GRILLE SHUTTER FOR OBSTRUCTIONS AND/OR MECHANICAL BINDING CONCERNS
  • Ignition OFF.
  • Remove the grille shutter actuator.
  • Manually open and close the grille shutter, removing any obstructions which can inhibit operation of the grille shutter or linkage. The grille shutter should open and close easily with no binding.

Does the grille shutter operate freely with no binding or obstruction?
Yes GO to A11
No REPAIR the binding/obstruction, or if necessary, INSTALL a new grille shutter assembly.

A11 CHECK FOR CORRECT GRILLE SHUTTER ACTUATOR OPERATION
  • Ignition OFF.
  • Disconnect: Grille Shutter Actuator C1651 (if not previously disconnected).
  • Inspect the grille shutter actuator electrical connector and jumper harness.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the grille shutter actuator connector, jumper harness and all previously disconnected system connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new grille shutter actuator.
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

A12 CHECK FOR THE CORRECT GRILLE SHUTTER ACTUATOR OPERATION
  • Inspect the grille shutter actuator and PCM electrical connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the grille shutter actuator connector, jumper harness and all previously disconnected system connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new grille shutter actuator. CLEAR the Diagnostic Trouble Codes (DTCs). REPEAT the self-test. If the concern is still present,
Ford Fusion. Active Grille Shutter. Diagnosis and Testing   Click here to access Guided Routine (PCM).Ford Fusion. Active Grille Shutter. Diagnosis and Testing Internet Explorer version 11 or greater is required to perform this Pinpoint Test.
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.


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