Test Procedure

ME1 CHECK FOR DTCS

Are DTCs P0001, P0002, P0003, P0004, P0089, P0090, P0091 or P0092 present?

Yes	No
GO to ME2 .	For an engine no start concern, GO to ME2 . For all others, if no DTCs are retrieved, the system is operating correctly at this time. The concern may be intermittent. CHECK for a loose connection, and damaged or corroded terminals. WIGGLE the harness attempting to recreate the concern. REPAIR as necessary. RETURN to SYMPTOM CHARTS for further direction.

ME2 CHECK THE VPWR VOLTAGE

NOTE: For a no start concern, follow the Yes answer.

NOTE: An open VPWR circuit concern is indicated by a VPWR PID value greater than 15 V while the engine is running.

Ignition ON, engine running.
Access the PCM and monitor the VPWR (VOLT) PID.

Is the voltage less than 15 V?

Yes	No
GO to ME3 .	REPAIR the open VPWR circuit. Clear the PCM DTCs. REPEAT the self-test.

ME3 CHECK THE VPWR CIRCUIT FOR VOLTAGE

NOTE: Only diagnose the component indicated by the DTC.

Ignition OFF.
Fuel Pressure Control Valve Solenoid connector disconnected.
Fuel Volume Control Valve Solenoid connector disconnected.
Ignition ON, engine OFF.

Measure the voltage between:

(+) Fuel Pressure Control Valve Solenoid Connector, Harness Side	(-)
VPWR - Pin 1	Ground

Measure the voltage between:

(+) Fuel Volume Control Valve Solenoid Connector, Harness Side	(-)
VPWR - Pin 1	Ground

Are the voltages greater than 10.5 V?

Yes	No
GO to ME4 .	REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test.

ME4 CHECK THE FPCV AND FVCV CIRCUITS FOR AN OPEN

NOTE: Only diagnose the component indicated by the DTC.

Ignition OFF.
PCM-E connector disconnected.

Measure the resistance between:

(+) Fuel Pressure Control Valve Solenoid Connector, Harness Side	(-) PCM-E Connector, Harness Side
FPCV - Pin 2	FPCV - Pin 3

Measure the resistance between:

(+) Fuel Volume Control Valve Solenoid Connector, Harness Side	(-) PCM-E Connector, Harness Side
FVCV - Pin 2	FVCV - Pin 22

Are the resistances less than 5 ohms?

Yes	No
GO to ME5 .	REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test.

ME5 CHECK THE FPCV AND FVCV CIRCUITS FOR A SHORT TO GROUND

NOTE: Only diagnose the component indicated by the DTC.

Measure the resistance between:

(+) Fuel Pressure Control Valve Solenoid Connector, Harness Side	(-)
FPCV - Pin 2	Ground

Measure the resistance between:

(+) Fuel Volume Control Valve Solenoid Connector, Harness Side	(-)
FVCV - Pin 2	Ground

Are the resistances greater than 10K ohms?

Yes	No
GO to ME6 .	REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test.

ME6 CHECK THE FPCV AND FVCV CIRCUITS FOR A SHORT TO VOLTAGE

NOTE: Only diagnose the component indicated by the DTC.

Ignition ON, engine OFF.

Measure the voltage between:

(+) Fuel Pressure Control Valve Solenoid Connector, Harness Side	(-)
FPCV - Pin 2	Ground

Measure the voltage between:

(+) Fuel Volume Control Valve Solenoid Connector, Harness Side	(-)
FVCV - Pin 2	Ground

Is any voltage present?

Yes	No
REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test.	GO to ME7 .

ME7 CHECK THE FUEL PRESSURE CONTROL VALVE SOLENOID AND FUEL VOLUME CONTROL VALVE SOLENOID RESISTANCE AT THE COMPONENT

NOTE: Only diagnose the component indicated by the DTC.

Ignition OFF.

Measure the resistance between:

(+) Fuel Pressure Control Valve Solenoid Connector, Component Side	(-) Fuel Pressure Control Valve Solenoid Connector, Component Side
FPCV - Pin 2	VPWR - Pin 1

Measure the resistance between:

(+) Fuel Volume Control Valve Solenoid Connector, Component Side	(-) Fuel Volume Control Valve Solenoid Connector, Component Side
FVCV - Pin 2	VPWR - Pin 1

Are the resistances between 2 - 6 ohms?

Yes	No
GO to ME8 .	INSTALL a new Fuel Pressure Control Valve or Fuel Volume Control Valve as necessary. REFER to the service information , Electronic Engine Controls. CARRY OUT the Reset And Clear The Specified Function Fuel System - High Pressure Side on the scan tool. REFER to CLEAR THE CONTINUOUS DIAGNOSTIC TROUBLE CODES (DTCS) AND RESET THE EMISSION MONITORS INFORMATION IN THE POWERTRAIN CONTROL MODULE (PCM) . Clear the PCM DTCs. REPEAT the self-test.

Yes

GO to ME8 .

INSTALL a new Fuel Pressure Control Valve or Fuel Volume Control Valve as necessary. REFER to the service information , Electronic Engine Controls. CARRY OUT the Reset And Clear The Specified Function Fuel System - High Pressure Side on the scan tool. REFER to CLEAR THE CONTINUOUS DIAGNOSTIC TROUBLE CODES (DTCS) AND RESET THE EMISSION MONITORS INFORMATION IN THE POWERTRAIN CONTROL MODULE (PCM) .
Clear the PCM DTCs. REPEAT the self-test.

ME8 CHECK THE FUEL PRESSURE CONTROL VALVE SOLENOID AND FUEL VOLUME CONTROL VALVE SOLENOID FOR A SHORT TO GROUND

NOTE: Only diagnose the component indicated by the DTC.

Measure the resistance between:

(+) Fuel Pressure Control Valve Solenoid Connector, Component Side	(-)
FPCV - Pin 2	Ground

Measure the resistance between:

(+) Fuel Volume Control Valve Solenoid Connector, Component Side	(-)
FVCV - Pin 2	Ground

Are the resistances greater than 10, 000 ohms?

Yes	No
GO to ME9 .	INSTALL a new Fuel Pressure Control Valve or Fuel Volume Control Valve as necessary. REFER to the service information , Electronic Engine Controls. CARRY OUT the Reset And Clear The Specified Function Fuel System - High Pressure Side on the scan tool. REFER to CLEAR THE CONTINUOUS DIAGNOSTIC TROUBLE CODES (DTCS) AND RESET THE EMISSION MONITORS INFORMATION IN THE POWERTRAIN CONTROL MODULE (PCM) . Clear the PCM DTCs. REPEAT the self-test.

Yes

GO to ME9 .

ME9 CHECK FOR CORRECT PCM OPERATION

Disconnect all the PCM connectors.
Visually inspect for:
- pushed out pins
- corrosion
Connect all the PCM connectors and make sure they seat correctly.
Carry out the PCM self-test.
Verify the concern is still present.

Is the concern still present?

Yes	No
INSTALL a new PCM. REFER to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) .	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.