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Home >> Ford >> 2023 >> Mustang Mach 1, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Electronic Engine Controls - 5.0L 32V Ti-VCT (359KW/486PS) (WU)/5.0L Ti-VCT V8 (343KW/466PS) (MF) - Mustang >> Diagnosis And Testing >> Electronic Engine Controls >> Pinpoint Tests >> Pinpoint Test I: P06DA, P06DB, P06DC, P06DD

Pinpoint Test I: P06DA, P06DB, P06DC, P06DD

  1. Normal Operation and Fault Conditions 

    Refer to the Fault Trigger Conditions.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    PCM P06DA:00 Engine Oil Pressure Control Circuit/Open: No Sub Type Information Sets when the PCM detects an open on the engine oil pressure control solenoid valve circuit.
    PCM P06DB:00 Engine Oil Pressure Control Circuit Low: No Sub Type Information Sets when the PCM detects a short to ground on the engine oil pressure control solenoid valve circuit.
    PCM P06DC:00 Engine Oil Pressure Control Circuit High: No Sub Type Information Sets when the PCM detects a short to voltage on the engine oil pressure control solenoid valve circuit.
    PCM P06DD:00 Engine Oil Pressure Control Circuit Performance/Stuck Off: No Sub Type Information Sets when the PCM detects the engine oil pressure control solenoid valve is stuck.

    Possible Sources 

    • Engine oil pressure control solenoid valve
    • PCM
    • Wiring, terminals or connectors

  2. I1 CHECK THE ENGINE OIL PRESSURE CONTROL SOLENOID VALVE SUPPLY VOLTAGE

    • Ignition OFF.

    • Disconnect Engine oil pressure control solenoid valve C1924 .

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1924-1
      GFD715499Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  GO to  I2
    No  VERIFY BJB fuse F42 (15A) is OK. If OK, REPAIR the open circuit. If not OK, REFER to the OEM Electrical Wiring Diagram Introduction to identify the possible causes of the circuit short.

  3. I2 CHECK THE ENGINE OIL PRESSURE CONTROL SOLENOID VALVE CIRCUIT FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1924-2
      GFD715499Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit.
    No  GO to  I3

  4. I3 CHECK THE ENGINE OIL PRESSURE CONTROL SOLENOID VALVE CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C175E-19
      GFD718072Courtesy of FORD MOTOR COMPANY
      		 C1924-2

    Is the resistance less than 3 ohms? 

    Yes  GO to  I4
    No  REPAIR the circuit.

  5. I4 CHECK THE ENGINE OIL PRESSURE CONTROL SOLENOID VALVE CIRCUIT FOR A SHORT TO GROUND

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1924-2
      GFD718072Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  I5
    No  REPAIR the circuit.

  6. I5 CHECK THE ENGINE OIL PRESSURE CONTROL SOLENOID VALVE OPERATION

    • NOTE: Engine oil level and contamination can affect the oil pressure reading.

      Check the engine oil level and correct as necessary.

    • Connect Engine oil pressure control solenoid valve C1924 .

    • Connect an EOP gauge to the oil pressure sender oil galley port. For more information, REFER to: Engine .

      Oil Pressure Test  .

    • Start the engine.

    • Using a diagnostic scan tool, view the PCM Parameter Identifications (PIDs).

    • Enable the engine oil pressure control solenoid valve using the PCMPID EOPDC_CMD.

    • NOTE: The PCMPID EOPDC_CMD may or may not be available in the diagnostic scan tool.

      If the active command PCMPID EOPDC_CMD is available in the diagnostic scan tool, enable the engine oil pressure control solenoid valve using the PCMPID EOPDC_CMD.

    • If the active command PCMPID EOPDC_CMD is not  available in the diagnostic scan tool, with the engine running, wait for approximately 20 to 30 seconds, the PCM commands the pump state transition from high pressure mode to low pressure mode.

    • A pressure drop of

      8 psi  or greater is anticipated. If the engine coolant temperature is less than 100°F (38°C), a pressure drop of

      15 psi  or greater is anticipated.

    Is the expected engine oil pressure drop present? 

    Yes  GO to  I6
    No  INSTALL a new oil pressure control solenoid valve. REFER to: Engine Oil Pressure (EOP) Sensor .

  7. I6 VERIFY ENGINE OIL PRESSURE CONTROL SOLENOID VALVE CONNECTION AND WIRING

    • Ignition OFF.

    • Disconnect Engine oil pressure control solenoid valve C1924 .

    • Disconnect PCM connectors.

    • Inspect connectors and wiring:

      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary

    • Reconnect all  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  REPAIR the circuit or connector as needed.
    No  The system is operating correctly at this time. The concern may have been caused by loose module connections. ADDRESS the root cause of any connector or pin issues.
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