Pinpoint Test T: P06DA, P06DB, P06DC

Refer to ELECTRONIC ENGINE CONTROLS - 3.0L DIESEL for schematic and connector information.

1. Normal Operation and Fault Conditions 

   Refer to the DTC 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	This DTC 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	This DTC 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	This DTC sets when the PCM detects a short to voltage on the engine oil pressure control solenoid valve circuit.

   Possible Sources 

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

2. T1 CHECK THE PCM (POWERTRAIN CONTROL MODULE) FOR DIAGNOSTIC TROUBLE CODES (DTCS)
   
   
   • Using a diagnostic scan tool, retrieve all PCM diagnostic trouble codes (DTCs)

   Are any PCM diagnostic trouble codes (DTCs) present? 

   Yes

   GO to  T2

   No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

3. T2 CLEAR AND CHECK THE PCM (POWERTRAIN CONTROL MODULE) FOR DIAGNOSTIC TROUBLE CODES (DTCS)
   
   
   • Using a diagnostic scan tool, clear all PCM diagnostic trouble codes (DTCs)
   • Using a diagnostic scan tool, retrieve all PCM diagnostic trouble codes (DTCs)

   Are any PCM diagnostic trouble codes (DTCs) present? 

   Yes

   GO to  T3

   No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

4. T3 MONITOR THE ENGINE OIL PRESSURE CONTROL OUTPUT CIRCUIT FAULT PID (PARAMETER IDENTIFICATION)
   
   
   • Ignition ON.
   • Using the diagnostic scan tool, view PCM Parameter Identifications (PIDs).
   • Access the PCM and monitor the EOPC_CIRC_FPID

   Is the PID reading True? 

   Yes

   GO to  T4

   No	A circuit fault is not currently active. CLEAR any history diagnostic trouble codes (DTCs), drive the vehicle and RECHECK for PCM diagnostic trouble codes (DTCs).

5. T4 CHECK THE OIL PRESSURE CONTROL SOLENOID SUPPLY VOLTAGE
   
   
   • Ignition OFF.
   • Disconnect Oil pressure control solenoid C1469.
   • Ignition ON.
   • Measure:

     Positive Lead	Measurement / Action	Negative Lead
     C1469-1	Courtesy of FORD MOTOR COMPANY	Ground

   Is the voltage greater than 11 volts? 

   Yes

   GO to  T5

   No	VERIFY BJB fuse F8 (10A) is OK. If OK, REPAIR the open circuit. If not OK, REFER to the OEM WIRING DIAGRAMS to identify the possible causes of the circuit short.

6. T5 CHECK THE OIL PRESSURE CONTROL SOLENOID CIRCUIT FOR A SHORT TO VOLTAGE
   
   
   • Ignition OFF.
   • Disconnect PCM C1232E.
   • Ignition ON.
   • Measure:

     Positive Lead	Measurement / Action	Negative Lead
     C1469-2	Courtesy of FORD MOTOR COMPANY	Ground

   Is any voltage present? 

   Yes	REPAIR the circuit.

   No

   GO to  T6

7. T6 CHECK THE OIL PRESSURE CONTROL SOLENOID CIRCUIT FOR AN OPEN
   
   
   • Ignition OFF.
   • Measure:

     Positive Lead	Measurement / Action	Negative Lead
     C1232E-60	Courtesy of FORD MOTOR COMPANY	C1469-2

   Is the resistance less than 3 ohms? 

   Yes

   GO to  T7

   No	REPAIR the circuit.

8. T7 CHECK THE OIL PRESSURE CONTROL SOLENOID CIRCUIT FOR A SHORT TO GROUND
   
   
   • Measure:

     Positive Lead	Measurement / Action	Negative Lead
     C1469-2	Courtesy of FORD MOTOR COMPANY	Ground

   Is the resistance greater than 10, 000 ohms? 

   Yes

   GO to  T8

   No	REPAIR the circuit.

9. T8 CHECK THE OIL PRESSURE CONTROL SOLENOID FOR AN OPEN
   
   
   • Measure:

     Positive Lead	Measurement / Action	Negative Lead
     C1469 pin 1, component side	Courtesy of FORD MOTOR COMPANY	C1469 pin 2, component side

   Is the resistance less than 3 ohms? 

   Yes

   GO to  T9

   No	INSTALL a new oil pressure control solenoid. REFER to: Oil Pump .

10. T9 VERIFY OIL PRESSURE CONTROL SOLENOID CONNECTION AND WIRING
    
    
    • Disconnect Engine oil pressure control solenoid C1469.
    • 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 or solenoid connections. ADDRESS the root cause of any connector or pin issues.