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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 840 (Engine Controls - Pinpoint Tests - Diesel 6.0L (99P E-Series & 99P F450/550)) >> PINPOINT TEST AT: Fuel Injector Control Module (FICM) Circuit Fuel Delivery Error >> Test Procedure

Test Procedure

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  1. AT1 PRELIMINARY DIAGNOSIS FOR DIAGNOSTIC TROUBLE CODE (DTC) P2552 
    • Retrieve and record all engine and transmission continuous DTCs.
    • Record the freeze frame data.
    • If DTCs P2614 or P2617 are present, follow the DTC diagnosis for P2552.
    • Is DTC P2552 present? 
    Yes No
    For DTCs P1378 or P1379, refer to PINPOINT TEST S .
    For DTC P2552, GO to  AT2.
    For DTC P0148, GO to  AT5.    		 CLEAR the DTCs. REPEAT the self-test. For all other DTCs, REFER toDIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS .
  2. AT2 DIAGNOSTIC TROUBLE CODE (DTC) P2552 
    NOTE: Refer to the PCM and component connector pin numbers at the beginning of this pinpoint test.
    • Possible causes:
      • FICMM line open
      • FICMM line shorted to ground
    • Key in OFF position.
    • FICM-C connector disconnected.
    • Key ON, engine OFF.
    • Measure the voltage between:
      ( + ) FICM-C Connector, Harness Side ( - )
      FICMM - Pin 9 Ground
    • Is the voltage greater than 10.5 V? 
    Yes No
    CLEAR the DTCs. REPEAT the self-test. If DTC P2553 is present again, INSTALL a new FICM. GO to  AT3.
  3. AT3 CHECK THE FICMM CIRCUIT FOR A SHORT TO GROUND 
    • Key in OFF position.
    • PCM connector disconnected.
    • Measure the resistance between:
      ( + ) PCM Connector, Harness Side ( - )
      FICMM - Pin E28 Ground
    • Is the resistance greater than 10K ohms? 
    Yes No
    GO to  AT4. REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.
  4. AT4 CHECK THE FICMM CIRCUIT FOR AN OPEN 
    • Measure the resistance between:
      ( + ) PCM Connector, Harness Side ( - ) FICM-C Connector, Harness Side
      FICMM - Pin E28 FICMM - Pin 9
    • Is the resistance greater than 10K ohms? 
    Yes No
    CLEAR the DTCs. REPEAT the self-test. If DTC P2552 is present again, GO to  AT6. REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.
  5. AT5 DIAGNOSTIC TROUBLE CODE (DTC) P0148 
    • Possible causes:
      • fuel quality
      • crankshaft position (CKP) or camshaft position (CMP) signal noise
    • Retrieve and record all engine and transmission DTCs.
    • Is DTC P0148 present? 
    Yes No
    REFER toPERFORMANCE DIAGNOSTIC PROCEDURES . CARRY OUT the OBD drive cycle. REFER toON BOARD DIAGNOSTIC (OBD) DRIVE CYCLE . REFLASH the PCM. REFER toFLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . If DTC P0148 is present again, GO to  AT6. REFER to the SYMPTOM CHARTS article, Symptom Charts, if a driveability concern exists.
  6. AT6 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 and verify the concern is still present.
    • Is the concern still present? 
    Yes No
    INSTALL a new PCM. REFER toFLASH 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.
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