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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 747 (Engine Controls - Pinpoint Tests - 6.0L Diesel (99P E-Series & 99P F450/550)) >> Pinpoint Test AT: FICM Circuit Fuel Delivery Error >> Test Procedure

Test Procedure

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  1. AT1 PRELIMINARY DIAGNOSIS FOR DTC P2552 
    • Retrieve and record all engine and transmission continuous DTCs.
    • If DTCs P2614 or P2617 are present, follow DTC diagnostic for P2552.

    IS DTC P2552 PRESENT? 

    Yes No
    For DTCs P1378 or P1379, Go to PINPOINT TEST S . CLEAR the DTCs. REPEAT the self-test. For all other DTCs, refer to DIAGNOSTIC TROUBLE CODE (DTC) DESCRIPTIONS .
    For DTC P2552, Go to  AT2.
    For DTC P0148, Go to  AT5 DIAGNOSTIC TROUBLE CODE (DTC) P0148.
  2. AT2 DIAGNOSTIC TROUBLE CODE (DTC) P2552 
    NOTE: Refer to the PCM and component connector pin numbers, Figure and Figure, at the beginning of this pinpoint test.
    • Possible causes:
      • FICMM line open
      • FICMM line shorted to ground
    • Key off.
    • Disconnect the FICM electrical harness connector C.
    • Key on, engine off.
    • Measure the voltage between the FICM connector C pin 9, harness side and ground.

    IS THE VOLTAGE GREATER THAN 10.5 VOLTS? 

    Yes No
    CLEAR all engine and transmission DTCs. REPEAT the self-test. If DTC P2552 is present again, INSTALL a new FICM. Go to  AT3 .
  3. AT3 CHECK FICMM CIRCUIT FOR A SHORT TO GROUND 
    • Key off.
    • Disconnect the PCM engine harness connector.
    • Measure the resistance between the PCM engine harness connector pin 28, harness side and ground.

    IS THE RESISTANCE GREATER THAN 10,000 OHMS? 

    Yes No
    Go to  AT4. REPAIR the circuit.
  4. AT4 CHECK FICMM CIRCUIT FOR AN OPEN 
    • Measure the resistance between the PCM engine harness connector pin 28, harness side and the FICM connector C pin 9, harness side.

    IS THE RESISTANCE LESS THAN 5 OHMS? 

    Yes No
    CLEAR all engine and transmission DTCs. REPEAT the self-test. If DTC P2552 is present again, INSTALL a new PCM. REPAIR the circuit.
  5. AT5 DIAGNOSTIC TROUBLE CODE (DTC) P0148 
    • Possible causes:
      • Fuel quality
      • CKP or CMP signal noise
    • Retrieve and record all engine and transmission DTCs.

    IS DTC P0148 PRESENT? 

    Yes No
    REFER to PERFORMANCE DIAGNOSTIC PROCEDURES . CLEAR the DTCs. REFER to SYMPTOM CHARTS - 6.0L DIESEL if a driveability concern exists.
    PERFORM a drive cycle. REFER to DIAGNOSTIC METHODS - 6.0L DIESEL .
    Reflash the PCM. If DTC P0148 is present again, INSTALL a new PCM.
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