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Home >> Ford >> 2018 >> Transit Connect XL, Van Cargo >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling - 2.5L DURATEC (125KW/170PS) >> Diagnosis And Testing >> Engine Cooling >> Pinpoint Tests >> Pinpoint Test B : The Engine Overheats >> Pinpoint Test B : Pinpoint Test

Pinpoint Test B : Pinpoint Test

  1. B1 CARRY OUT INSPECTION AND VERIFICATION

    Are any concerns present? 

    Yes  REPAIR as needed.
    No  GO to  B2

  2. B2 CHECK FOR PCM (POWERTRAIN CONTROL MODULE) DTCS

    • Ignition ON.

    • Using a scan tool, perform PCM self-test.

    Is DTC P0217 and/or P1299 present? 

    Yes  GO to  B3
    No  Actual engine overheating has not been verified. CHECK the engine coolant temperature gauge operation. REFER to: Instrumentation, Message Center and Warning Chimes . If any other PCM DTCs are retrieved, REFER to: Electronic Engine Controls .

  3. B3 CHECK FOR AN AIRFLOW OBSTRUCTION AND MISSING AIR DEFLECTORS

    NOTE: Verify no vehicle front end damage is present.

    • Check the radiator or A/C condenser for an external obstruction such as leaves or cardboard and verify all air deflectors are present.

    Is an airflow obstruction present or air deflectors missing? 

    Yes  REPAIR as necessary.
    No  GO to  B5

  4. B4 CHECK THE CHT (CYLINDER HEAD TEMPERATURE) AND AMBIENT AIR TEMPERATURE CORRELATION

    • Check temperature values while engine is at ambient temperature, cold soak the engine for a minimum of 6 hours if necessary. Make sure the vehicle has not been in direct sunlight.

    • Using a diagnostic scan tool, monitor the PCM CHT (TEMP) and AAT (TEMP) PIDs.

    Are the temperature readings within 10 degrees of each other? 

    Yes  GO to  B5
    No  INSTALL a new CHT sensor, REFER to: Cylinder Head Temperature (CHT) Sensor .

  5. B5 CHECK THE ENGINE COOLANT LEVEL AND PRESSURE TEST THE COOLING SYSTEM

    • Ignition OFF.

    • Visually check the engine coolant level in the coolant expansion tank and adjust as necessary. Pressure test the cooling system.

    Does the engine cooling system leak externally? 

    Yes  REPAIR or INSTALL new components.
    No  GO to  B6

  6. B6 CHECK THE ENGINE COOLANT FOR AN INTERNAL LEAK

    • Inspect the engine coolant in the coolant expansion tank for signs of engine oil.

    Is engine oil evident in the coolant? 

    Yes  REFER to: Engine .
    No  GO to  B7

  7. B7 CHECK THE ENGINE OIL FOR COOLANT

    • Remove the oil level indicator from the engine.

    Is coolant evident in the oil? 

    Yes  REFER to: Engine .
    No  Vehicles with an automatic transmission, GO to  B8 Vehicles with a manual transmission, GO to  B10

  8. B8 CHECK THE ENGINE COOLANT FOR TRANSMISSION FLUID

    • Check the engine coolant in the degas bottle for signs of transmission fluid.

    Is transmission fluid evident in the engine coolant? 

    Yes  INSTALL a new transmission cooler - warmer. REFER to: Transmission Fluid Cooler Tubes - 2.5L Duratec (125kW/170PS), Liquefied Petroleum Gas (LPG) . REPAIR the transmission as necessary. REFER to: Automatic Transmission, Transfer Case and Power Transfer Unit - 2.5L Duratec (125kW/170PS) . TEST the system for normal operation.
    No  GO to  B9

  9. B9 CHECK THE TRANSMISSION FLUID FOR ENGINE COOLANT

    • Remove the transmission oil leveling plug.

    1. GFD304386Courtesy of FORD MOTOR COMPANY

    • Check the transmission fluid for engine coolant.

    Is engine coolant evident in the transmission fluid? 

    Yes  INSTALL a new transmission cooler - warmer. REFER to: Transmission Fluid Cooler Tubes - 2.5L Duratec (125kW/170PS), Liquefied Petroleum Gas (LPG) . REPAIR the transmission as necessary. REFER to: Automatic Transmission, Transfer Case and Power Transfer Unit - 2.5L Duratec (125kW/170PS) . TEST the system for normal operation.
    No  GO to  B10

  10. B10 CHECK THE COOLING SYSTEM FOR COMBUSTION GASES

    NOTE: Use UView® Combustion Leak Tester part number UVU560000-R or equivalent.

    • Using a cooling system combustion gas leak tester, following the instructions supplied with the tester, check the coolant for combustion gases.

    Are combustion gases present? 

    Yes  REFER to: Engine .
    No  GO to  B11

  11. B11 CHECK COOLANT CONDITION

    • Check the coolant for dirt, rust or contamination and check the coolant concentration.

    Is the coolant condition OK? 

    Yes  GO to  B12
    No  FLUSH the engine cooling system.

  12. B12 CHECK THE ELECTRIC COOLING FAN OPERATION

    • Start the engine.

    • Place the climate control function selector in the MAX A/C position and the blower motor switch in the HI position.

    Yes  GO to  B13
    No  DIAGNOSE the electric cooling fan operation. Refer to Engine Controls - Symptom Charts (Except Diesel & Hybrid)

  13. B13 CHECK THE COOLANT PUMP OPERATION

    • Start the engine.

    • Allow the engine to run for 30 minutes. Place the climate control function selector in the MAX HEAT position. Feel the heater outlet hose.

    Is the heater outlet hose hot? 

    Yes  GO to  B14
    No  INSTALL a new coolant pump. REFER to: Coolant Pump .

  14. B14 CHECK THE THERMOSTAT OPERATION

    • Start the engine.

    • Allow the engine to run for 30 minutes. Place the climate control function selector in the MAX HEAT position. Feel the lower radiator hose.

    Is the lower radiator hose hot? 

    Yes  CHECK the temperature gauge operation. REFER to: Instrumentation, Message Center and Warning Chimes .
    No  GO to  B15

  15. B15 VISUALLY INSPECT THE THERMOSTAT

    • Carry out the Thermostat Visual Inspection. Refer to Thermostat 

    Is the thermostat damaged? 

    Yes  INSTALL a new thermostat. REFER to: Thermostat .
    No  INSTALL a new thermostat. REFER to: Thermostat . If the engine still overheats, INSTALL a new radiator. REFER to: Radiator .
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