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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2766 (Engine Controls - Pinpoint Test A: No Start Through Pinpoint Test DJ: Air Conditioner Evaporator Temperature (ACET) Sensor - CNG, Flex-Fuel & Gasoline) >> Pinpoint Test A: No Start >> Test Procedure

Test Procedure

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  1. A1 CHECK THE PASSIVE ANTI-THEFT SYSTEM (SECURE LOCK) 
    • Verify the anti-theft system status.

    Is the system activated? 

    Yes No
    REFER to the appropriate ANTI-THEFT SYSTEM article. GO to  A2.
  2. A2 ATTEMPT TO CRANK THE ENGINE 
    NOTE: VERIFY the Inertia Fuel Shutoff (IFS) switch is set (button pushed in). REFER to the Owner Guide for location.

    Does the engine crank? 

    Yes No
    KEY OFF.
    GO to  A3.    		 KEY OFF.
    REFER to the appropriate STARTING SYSTEM article.
  3. A3 IDENTIFY THE TYPE OF NO START 
    NOTE: The purpose of this test step is to identify intermittent no starts in order to determine the proper repair procedure.

    Does the vehicle start? 

    Yes No
    KEY OFF.
    Vehicle is an intermittent no start.
    GO to Z2 .    		 KEY OFF.
    GO to  A4.
  4. A4 DETERMINE THE THROTTLE TYPE 

    Is vehicle equipped with Electronic Throttle Control? 

    Yes No
    GO to  A6. GO to  A5.
  5. A5 CHECK THE VREF VOLTAGE TO TP SENSOR 
    • TP Sensor connector disconnected.
    • Key ON Engine OFF.
    • Measure the voltage between:
    ( + )TP Sensor Connector, Harness Side ( - )TP Sensor Connector, Harness Side
    VREF SIGRTN

    Is the voltage between 4 V-5.5 V? 

    Yes No
    KEY OFF.
    RECONNECT the TP sensor.
    GO to  A7.    		 KEY OFF.
    GO to  C1.
  6. A6 CHECK THE VREF VOLTAGE TO THE ETC SENSOR 
    • ETBTPS Sensor connector disconnected.
    • Key ON Engine OFF.
    • Measure the voltage between:
    ( + )ETBTPS Sensor Connector, Harness Side ( - )ETBTPS Sensor Connector, Harness Side
    ETCREF - Pin 2 ETCRTN - Pin 3

    Is the voltage between 4 V-5.5 V? 

    Yes No
    KEY OFF.
    Reconnect ETC.
    GO to  A7.    		 KEY OFF.
    GO to  C1.
  7. A7 CHECK THE FLASH EEPROM POWER SUPPLY (FEPS) CIRCUIT FOR A SHORT TO POWER IN THE HARNESS" 
    • Key ON Engine OFF.
    • Measure the voltage between:
    ( + )DLC Connector, Harness Side ( - )Vehicle battery
    FEPS Negative terminal

    Is the voltage greater than 9 V? 

    Yes No
    KEY OFF.
    REPAIR short circuit to PWR.
    For Coil on plug ignition testing: 
    GO to  A16.    		 KEY OFF.
    GO to  A8.
  8. A8 CHECK THE PCM DRIVER TO COILS 
    • Connect a test lamp between B+ and each coil driver circuit at the harness connector.
    • Crank the engine.
    NOTE: Test lamp bulb filament wattages vary widely. The intensity and duration of blinking depends on the test lamp being used.

    Does the test lamp blink consistently (one blink per engine revolution)? 

    Yes No
    KEY OFF.
    GO to  A9.    		 KEY OFF.
    GO to PINPOINT TEST JD step 1.
  9. A9 CHECK THE RPM IN THE PCM 
    NOTE: The scan tool must be connected to a reliable power source that is powered with the key in the START position (such as directly to the vehicle battery). Also verify that the vehicle battery is fully charged.
    • Access the PCM -RPM PID.
    • Crank the engine while viewing the RPM PID.

    Is the RPM between 150 RPM - 350 RPM? 

    Yes No
    KEY OFF.
    For Coil on plug ignition testing: 
    GO to PINPOINT TEST JB step 1.
    For Coil pack ignition testing: 
    GO to PINPOINT TEST JC step 1.
    For Dedicated NGV vehicles that do not require ignition testing: 
    GO to  A12.
    For All other vehicles that do not require ignition testing: 
    GO to  A10.    		 KEY OFF.
    GO to PINPOINT TEST JD STEP 2.
  10. A10 CHECK THE FUEL PRESSURE 
    WARNING: THE FUEL SYSTEM REMAINS PRESSURIZED WHEN THE ENGINE IS NOT RUNNING.

    TO PREVENT INJURY OR FIRE, USE CAUTION WHEN WORKING ON THE FUEL SYSTEM  .

    REFER TO THE WARNING TEXT FOUND AT THE BEGINNING OF  PINPOINT TEST HC  .

    • Relieve the fuel pressure.
    • Connect the fuel pressure gauge using the appropriate fuel pressure test hose and adaptor.
    • Scan Tool Connected.
    • Key ON Engine OFF.
    • Enter Output Test Mode. Refer to OUTPUT TEST MODE .
    • Activate the fuel pump to obtain maximum fuel pressure.

    Is the fuel pressure within specification Refer to the fuel pressure chart in  PINPOINT TEST HC  ? 

    Yes No
    KEY OFF.
    GO to  A11.    		 KEY OFF.
    GO to PINPOINT TEST HC STEP 1.
  11. A11 CHECK THE FUEL PRESSURE LEAKDOWN 
    • Scan Tool Connected.
    • Key ON Engine OFF.
    • Enter Output Test Mode. Refer to OUTPUT TEST MODE .
    • Activate the fuel pump to obtain maximum fuel pressure.
    • Exit the Output Test Mode.
    • Verify the fuel pressure remains within 34 kPa (5 psi) of the maximum pressure for 1 minute after turning the pump off.

    Does fuel pressure remain within 34 kPa (5 psi)? 

    Yes No
    KEY OFF.
    GO to  A12.    		 KEY OFF.
    GO to PINPOINT TEST HC STEP 1.
  12. A12 CHECK THE FUEL INJECTORS FOR VPWR 
    • CHECK at least 2 fuel injectors, 1 on each bank on V type engines. A no start condition can exist only if greater than half of the fuel injectors are without VPWR.
    • Disconnect 2 fuel injectors.
    • Key ON Engine OFF.
    • Measure the VPWR voltage at each fuel injector harness connector.

    Is the voltage greater than 10.5 volts? 

    Yes No
    KEY OFF.
    For Dedicated NGV 
    GO to  A14.
    For Gasoline 
    GO to  A13.    		 KEY OFF.
    REPAIR the VPWR circuit.
  13. A13 CHECK THE FUEL INJECTORS ABILITY TO DELIVER FUEL 
    • Cycle the key several times to charge the fuel system.
    • Locate and activate the fuel inertia switch to disable fuel pump.
    • Monitor the fuel pressure gauge while cranking the engine for at least 5 seconds.

    Is there a pressure drop greater than 34 kPa (5 psi) while cranking the engine? 

    Yes No
    KEY OFF.
    The Electronic Engine Control (EEC) system is not the cause of the no start.
    Concern is elsewhere. RETURN to SYMPTOM CHARTS - CNG, FLEX-FUEL & GASOLINE for further direction.    		 KEY OFF.
    REPLACE the PCM. REFER to DIAGNOSTIC METHODS - CNG, FLEX-FUEL & GASOLINE .
  14. A14 CHECK THE FUEL PRESSURE 
    WARNING: BEFORE SERVICING OR REPLACING ANY COMPONENTS IN THE FUEL SYSTEM, REDUCE THE POSSIBILITY OF INJURY OR FIRE BY FOLLOWING THE WARNING, CAUTION, AND HANDLING DIRECTIONS IN SAFE FUEL HANDLING PRACTICES: GASOLINE, METHANOL, AND METHANOL BLENDS AT BEGINNING OF PINPOINT TEST HC.
    • Key ON Engine OFF.
    • Access the FRP PID (PCM) or FRPREAB PID (AFCM).
    • Record the fuel pressure.

    Is the fuel pressure within specification Refer to the fuel pressure chart in  PINPOINT TEST HC  ? 

    Yes No
    GO to  A15. GO to PINPOINT TEST HB STEP 1.
  15. A15 CHECK THE INJECTOR SIGNAL FROM THE NATURAL GAS MODULE 
    NOTE: This test requires a standard 12-volt test lamp. A properly operating system shows a dim glow.
    • Connect a non-powered test lamp between the injector signal circuit and VPWR circuit pin at the injector harness.
    • Crank the engine.

    Does the test lamp have a dim glow while cranking? 

    Yes No
    GO to PINPOINT TEST HA STEP 22. GO to PINPOINT TEST HA STEP 16.
  16. A16 CHECK THE PCM DRIVER TO COILS 
    • Connect a test lamp between B+ and each coil driver circuit at the harness connector.
    • Crank the engine.

    Does the test lamp blink consistently (one blink per engine revolution)? 

    Yes No
    GO to  A9. GO to PINPOINT TEST JD STEP 1.
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