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Home >> Ford >> 2005 >> Escape Base, 2.3 Z, FWD, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Pinpoint Test DY: Engine Oil Temperature (EOT) Sensor Through Pinpoint Test Hf: Catalyst Efficiency Monitor And Exhaust Systems - (Except Diesel & Hybrid) >> Pinpoint Test HD: Misfire Detection Monitor >> Test Procedure
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Test Procedure

  1. HD1 CHECK FOR ADAPTIVE FUEL MONITOR AND HEGO MONITOR DTCS (CONTINUOUS MEMORY) 
    • Check the PCM for self-test DTCs.

    Are DTCs P0136, P0156, P0171, P0172, P0175, P2270, P2271, P2272 or P2273 present? 

    Yes No
    GO to  HD3. GO to  HD2.
  2. HD2 CHECK FOR OTHER NON-MISFIRE CONTINUOUS MEMORY DTCS 

    Are there any non-misfire continuous memory DTCs present? 

    Yes No
    DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to POWERTRAIN DTC CHARTS AND DESCRIPTIONS - GASOLINE MODELS . GO to  HD3.
  3. HD3 VIEW THE PCM MISFIRE FREEZE FRAME DATA 
    • The misfire freeze frame data may be used to determine the operating conditions when the misfire DTC was set.
    • Retrieve and record any available misfire freeze frame data PID values from the PCM.
    • Compare recorded freeze frame data PID values to the typical reference values in REFERENCE VALUES - GASOLINE MODELS .

    Are any values out of range? 

    Yes No
    For out of range PIDS REFER to the table in the Pinpoint Test Z to find corresponding circuit, and proceed with the intermittent diagnosis.
    GO to Pinpoint Test Z .    		 GO to  HD4.
  4. HD4 CHECK THE IGNITION SYSTEM 
    • For coil-on-plug (COP) equipped vehicles GO to Pinpoint Test JB and follow the Pinpoint Test direction.
    • For ignition coil pack equipped vehicles GO to Pinpoint Test JC and follow the Pinpoint Test direction.

    Is an ignition related concern present? 

    Yes No
    FOLLOW the ignition pinpoint test direction and REPAIR as necessary. GO to  HD5.
  5. HD5 CHECK FOR ANY OTHER KOEO SELF-TEST DTCS 

    Are any other KOEO DTCs present? 

    Yes No
    (If misfire or coil DTCs are present, and WDS or an equivalent tool is available, use the scope function to verify the suspect coil.).
    DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to POWERTRAIN DTC CHARTS AND DESCRIPTIONS - GASOLINE MODELS .    		 Key in OFF position.
    For spark plug wires that are OK:
    GO to  HD6.
    For spark plug wires that need evaluation:
    GO to PINPOINT TEST JB STEP 1 .
  6. HD6 CHECK FOR ANY OTHER CODES THAT MAY CAUSE A MISFIRE 
    • Check for self-test DTCs.

    Are DTCs P1131, P1132, P1137, P1138, P1151, P1152, P1157 or P1158 present? 

    Yes No
    GO to  HD8. GO to  HD7.
  7. HD7 CHECK FOR ANY OTHER KOER DTCS 

    Are any other KOER DTCs present? 

    Yes No
    Key in OFF position. DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to POWERTRAIN DTC CHARTS AND DESCRIPTIONS - GASOLINE MODELS . GO to  HD8.
  8. HD8 CHECK THE INJECTOR DRIVER PIDS INJ1F THROUGH INJ10F 
    • Key ON, engine OFF.
    • Access the appropriate INJxF PIDs for the suspect injector.

    Are the PIDs status YES? 

    Yes No
    For Vehicles with FICM:
    GO to PINPOINT TEST HL STEP 1 .
    For all others:
    GO to  HD9.    		 Key in OFF position.
    GO to  HD10.
  9. HD9 CHECK THE FUEL INJECTORS AND HARNESS FOR AN OPEN 
    • PCM connector disconnected.
    • Measure the resistance between:
      (+) PCM Connector, Harness Side (-) PCM Connector, Harness Side
      VPWR Suspect INJ

    Is the resistance between 11 - 18 ohms? 

    Yes No
    INSTALL a new PCM.
    REFER to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) .    		 GO to  H35.
  10. HD10 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 PINPOINT TEST HC .
    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.
    • Fuel pressure gauge connected.
    • Start and run engine at idle, check and record the fuel pressure.
    • Increase the engine speed to a minimum of 2, 000 RPM and maintain for 2 minutes.
    • Note and compare the fuel pressure.

    Is the fuel pressure within specification (refer to the  FUEL SYSTEM SPECIFICATION CHART   in Pinpoint Test HC)? 

    Yes No
    Key in OFF position.
    GO to  HD11.    		 REFER to FUEL SYSTEM - GENERAL INFORMATION to determine which area within the fuel system is at fault.
  11. HD11 VERIFY THE FUEL SYSTEM HOLDS PRESSURE 
    • Key ON, engine running.
    • Check the fuel pressure.
    • Increase the engine speed to a minimum of 2, 000 RPM and maintain for 2 minutes.
    • Check for fuel leaking at the fuel injector O-ring, fuel pressure regulator, and the fuel lines to the fuel charging assembly.

    Did the fuel pressure remain within 34 kPa (5 psi) for 60 seconds? 

    Yes No
    Key in OFF position.
    For vehicles equipped with differential pressure feedback EGR system, GO to  HD12.
    For vehicles equipped with electric EGR (EEGR) system, GO to  HD13.
    For vehicles equipped with EGR system module (ESM) EGR system, GO to  HD14.
    For all others, GO to  HD18.    		 Refer to FUEL SYSTEM - GENERAL INFORMATION to determine which area within the fuel system is at fault.
  12. HD12 MONITOR DPFEGR SYSTEM RELATED PIDS 
    • Key ON, engine running.
    • Bring the engine to normal operating temperature.
    • Access the PCM and monitor the DPFEGR and EGRVR PIDs.
    • Record the PID values with the engine idling.
    • Key ON, engine OFF.
    • Record the PID values with the engine off.
    • Compare recorded PID values to the typical reference values in REFERENCE VALUES - GASOLINE MODELS .

    Are any values out of range? 

    Yes No
    GO to Pinpoint Test HE  and diagnose the EGR system. GO to  HD15.
  13. HD13 MONITOR EEGR SYSTEM RELATED PIDS 
    • Key ON, engine running.
    • Bring the engine to normal operating temperature.
    • Access the PCM and monitor the EGRMC1, EGRMC2, EGRMC3, EGRMC4 and MAP_V PIDs.
    • Record the PID values with the engine idling.
    • Key ON, engine OFF.
    • Record the PID values with the engine off.
    • Compare recorded PID values to the typical reference values in REFERENCE VALUES - GASOLINE MODELS .

    Are any values out of range? 

    Yes No
    GO to Pinpoint Test KD and diagnose the EGR system. GO to  HD16.
  14. HD14 MONITOR ESM SYSTEM RELATED PIDS 
    • Key ON, engine running.
    • Bring the engine to normal operating temperature.
    • Access the PCM and monitor the DPFEGR, EGRVR and MAP_V PIDs.
    • Record the PID values with the engine idling.
    • Key ON, engine OFF.
    • Record the PID values with the engine off.
    • Compare recorded PID values to the typical reference values in REFERENCE VALUES - GASOLINE MODELS .

    Are any values out of range? 

    Yes No
    GO to Pinpoint Test HH and diagnose the EGR system. GO to  HD17.
  15. HD15 RECREATE THE MISFIRE SYMPTOM WITH DPFEGR SYSTEM DISABLED 
    NOTE: The PCM may store EGR system related DTCs during this procedure.
    • Key in OFF position.
    • EVR Solenoid connector disconnected.
    • Access the misfire freeze frame data (if available) and record the DTC malfunction conditions.
    • Obtain information from the customer information worksheet or any other available data from the customer.
    • Recreate the misfire symptom using freeze frame and customer information.
    NOTE: To recreate the original conditions that set the DTC or caused the symptom, the vehicle may require driving.

    Could the symptom be recreated? 

    Yes No
    CONNECT the EVR solenoid and CLEAR the PCM DTCs.
    GO to  HD18.    		 REMOVE and INSPECT the EGR valve for signs of contamination, unusual wear, carbon deposits, binding or other damage.
    REFER to ENGINE for more EGR system information.
    REPAIR as necessary.
  16. HD16 RECREATE THE MISFIRE SYMPTOM WITH EEGR SYSTEM DISABLED 
    NOTE: The PCM may store EGR system related DTCs during this procedure.
    • Key in OFF position.
    • EEGR Assembly connector disconnected.
    • Access the misfire freeze frame data (if available) and record the DTC malfunction conditions.
    • Obtain information from the customer information worksheet or any other available data from the customer.
    • Recreate the misfire symptom using freeze frame and customer information.
    NOTE: To recreate the original conditions that set the DTC or caused the symptom, the vehicle may require driving.

    Could the symptom be recreated? 

    Yes No
    CONNECT the EEGR assembly and CLEAR the PCM DTCs.
    GO to  HD18.    		 REMOVE and INSPECT the EEGR for signs of contamination, unusual wear, carbon deposits, binding or other damage.
    REFER to ENGINE for more EGR system information.
    REPAIR as necessary.
  17. HD17 RECREATE THE MISFIRE SYMPTOM WITH ESM SYSTEM DISABLED 
    NOTE: The PCM may store EGR system related DTCs during this procedure.
    • Key in OFF position.
    • ESM connector disconnected.
    • Access the misfire freeze frame data (if available) and record the DTC malfunction conditions.
    • Obtain information from the customer information worksheet or any other available data from the customer.
    • Recreate the misfire symptom using freeze frame and customer information.
      NOTE: To recreate the original conditions that set the DTC or caused the symptom, the vehicle may require driving.

    Could the symptom be recreated? 

    Yes No
    CONNECT the ESM connector and CLEAR the PCM DTCs.
    GO to  HD18.    		 REMOVE and INSPECT the ESM for signs of contamination, unusual wear, carbon deposits, binding or other damage.
    REFER to ENGINE for more EGR system information.
    REPAIR as necessary.
  18. HD18 CHECK THE FUEL INJECTORS ABILITY TO DELIVER FUEL 
    NOTE: The fuel delivery system is not likely to have caused the misfire DTC if the flow test is within specification.
    • Go to PINPOINT TEST HC  for reference to the warning, caution, and handling to prevent accident.
    • Verify the flow rate for each injector is within specification. Use the injector flow tester.

    Is the flow rate for each injector within specification? 

    Yes No
    GO to  HD19. INSTALL a new Fuel Injector.
  19. HD19 CHECK THE VACUUM SYSTEM 
    NOTE: Some vacuum leaks can be heard.
    • Visually inspect the vacuum hoses for signs of damage or deterioration. A collapsed vacuum hose may cause a blockage to one of the various actuators or sensors. If a blockage is found remove the blockage or install new parts as necessary.

    Is the vehicle vacuum system OK? 

    Yes No
    GO to  HD20. REPAIR the vacuum system.
  20. HD20 CHECK THE DAMPER AND PULLEY ASSEMBLY 
    NOTE: This step is for engines that have damper mounted pulse rings. Remove the front cover if necessary to observe the crank pulley.
    • Observe the crank pulley for wobble.
    • Examine the EI pulse ring fastened to the harmonic dampener.

    Does the crank pulley wobble or is the pulse ring loose or damaged? 

    Yes No
    DISCONNECT the battery for 5 minutes to allow the PCM to learn the new profile. INSTALL a new pulley or damper assembly. GO to  HD21.
  21. HD21 CHECK THE EVAPORATIVE EMISSION SYSTEM 
    • The misfire monitor can be influenced by the evaporative emission system. The next 5 pinpoint test steps diagnose the evaporative emission system.
    • Check the EVAP canister for fuel saturation.

    Is there an excess amount of liquid fuel present in the canister? 

    Yes No
    INSTALL a new EVAP canister. GO to  HD22.
  22. HD22 PRESSURE TEST THE EVAPORATIVE EMISSION SYSTEM 
    • Install the Rotunda Evaporative Emission System Tester, or equivalent, at the EVAP test port, then at the fuel filler cap.
    • Follow the test instructions from the tester kit.

    Is the evaporative emission system holding pressure? 

    Yes No
    GO to  HD23. REPAIR as necessary.
  23. HD23 CHECK VACUUM IN THE EVAPORATIVE EMISSION SYSTEM 
    • Check the vacuum system between the engine vacuum port and the EVAP canister.
    • Check the EVAP system lines/hoses (check for proper connections, damage or blockage).
    • Check for blockage in the fuel tank vent system.

    Is there a fault indicated? 

    Yes No
    INSTALL a new vacuum hoses in place of the damaged hoses, or REMOVE the blockage/restrictions. GO to  HD24.
  24. HD24 CHECK THE EVAP CANISTER PURGE VALVE HOUSING LEAKS 
    • The EVAP canister purge valve is electrically connected.
    • Install a hand vacuum pump to the fuel vapor port from the EVAP canister on the EVAP canister purge vacuum valve at the line.
    • Apply 53 kPa (16 in-Hg) of vacuum with the vacuum pump.

    Does the EVAP canister purge valve hold vacuum at room temperature? 

    Yes No
    GO to  HD25. REMOVE the vacuum pump. INSTALL a new EVAP canister purge valve.
  25. HD25 CHECK FOR FILTER CONTAMINATION ON THE EVAP CANISTER PURGE VALVE 
    • The vacuum line from the input vacuum port to the intake manifold on the EVAP canister purge valve (the control vacuum solenoid part of the valve) is removed.
    • Install a hand vacuum to the open vacuum port on the EVAP canister purge valve.
    • Apply 48 - 52 kPa (14 - 15 in-Hg) of vacuum to the canister purge valve.

    Does the EVAP canister purge valve hold vacuum, or is the valve very slow to release vacuum to the atmosphere? 

    Yes No
    REPAIR the EVAP canister purge valve filter. If unable to clean the filter or remove blockage to the filter, INSTALL a NEW EVAP canister purge valve. GO to  HD26.
  26. HD26 CHECK FOR BASE ENGINE CONCERNS 
    • This step determines if there are any base engine concerns that may have caused the Misfire DTC or drive concern.
    NOTE: The engine temperature may affect the results.
    • Carry out the following tests in order to evaluate base engine integrity:
    • Carry out engine compression and leakdown tests. REFER to ENGINE SYSTEM - GENERAL INFORMATION .
    • Carry out valve train analysis. REFER to ENGINE SYSTEM - GENERAL INFORMATION .
    • Check the positive crankcase ventilation (PCV) system. REFER to ENGINE SYSTEM - GENERAL INFORMATION .
    • Check possible leakage points. REFER to ENGINE SYSTEM - GENERAL INFORMATION . Is any repair required?
    Yes No
    REPAIR as necessary. REFER to ENGINE SYSTEM - GENERAL INFORMATION . GO to PINPOINT TEST Z STEP 1 .
    If unable to identify the fault in Pinpoint Test Z, GO to  HD27.
  27. HD27 CHECK Z1 TO IDENTIFY A FAULT 

    Did Pinpoint Test Z find a fault? 

    Yes No
    Test Complete. GO to  HD28.
  28. HD28 CHECK FOR ADDITIONAL MISFIRE DTCS 
    • Diagnostic trouble code P0300 indicates multiple cylinders are misfiring or the PCM cannot identify which cylinder is misfiring.

    Are any other misfire DTCs present? 

    Yes No
    GO to  HD1. GO to  HD29.
  29. HD29 CHECK FOR OTHER NON-MISFIRE CONTINUOUS MEMORY DTCS 

    Are other continuous memory DTCs present? 

    Yes No
    DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to POWERTRAIN DTC CHARTS AND DESCRIPTIONS - GASOLINE MODELS . GO to  HD30.
  30. HD30 IDENTIFY THE CAMSHAFT POSITION (CMP) SENSOR TYPE 
    • Identify which type of CMP sensor the vehicle uses.

    Does the vehicle use a Hall-effect sensor? 

    Yes No
    GO to  HD31. GO to  HD32.
  31. HD31 CHECK THE CMP SENSOR LOW RANGE OUTPUT WITH THE PCM DISCONNECTED 
    NOTE: DTCs P1309 and P1336 indicate the misfire monitor is not enabled.
    • PCM connector disconnected.
    • Connect the digital multimeter.
    • Bump the engine with a short burst from the starter, without starting the engine for at least 10 engine revolutions.
    • Measure the voltage between:
      (+) CMP Sensor Connector, Harness Side (-) 12 Volt Vehicle Battery
      CMP Negative terminal

    Is the voltage less than 2 V? 

    Yes No
    A Hall-type CMP that is installed out of synchronization produces a DTC. To verify the correct installation, REFER to ENGINE SYSTEM - GENERAL INFORMATION. If the CMP is installed properly, INSTALL a new PCM.
    REFER to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) .
    GO to PINPOINT TEST DK STEP 1 .    		 INSTALL a new CMP sensor.
  32. HD32 CHECK THE CMP SENSOR OUTPUT VOLTAGE 
    • Key in OFF position.
    • PCM connector connected.
    • CMP Sensor connector disconnected.
    NOTE: Diagnostic trouble code P1309 indicates the misfire detection monitor is not enabled.
    • Digital multimeter on low voltage AC scale.
    • Key ON, engine running.
    • Measure the voltage between:
      (+) PCM Connector, Harness Side (-) 12 Volt Vehicle Battery
      CMP Negative terminal

    Is the voltage greater than 0.25 V? 

    Yes No
    INSTALL a new PCM.
    REFER to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) .    		 INSTALL a new CMP sensor.
  33. HD33 DTC P0315: CHECK THE PHYSICAL CONDITION OF THE CRANKSHAFT PULSE WHEEL 
    NOTE: DTC P0315 is set when the PCM is unable to learn and correct for the mechanical variations in the crankshaft pulse wheel tooth spacing (the allowable correction tolerances are exceeded).
    • Inspect the crankshaft pulse wheel for damaged teeth.
    • Inspect the crankshaft pulsewheel for wobble.
    • Check for a loose crankshaft pulse wheel.
    • Check the CKP sensor for damage.

    Are the CKP sensor and crankshaft pulse wheel OK? 

    Yes No
    If the CKP is installed properly, INSTALL a new PCM.
    REFER to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) .    		 REPAIR as necessary.
    REFER to ENGINE SYSTEM - GENERAL INFORMATION to check for correct crankshaft position (CKP) sensor installation.
    RESET the keep alive memory (KAM).
    REFER to RESETTING THE KEEP ALIVE MEMORY (KAM) .
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