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Pinpoint Test A: The Engine Does Not Crank

WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
  1. A1 CHECK THE BATTERY 

    Yes  : GO to A2.

    No  : CHARGE or INSTALL a new battery as necessary. REFER to BATTERY, MOUNTING AND CABLES . TEST the system for normal operation.

  2. A2 CHECK THE CONDITION OF THE PATS 
      NOTE: The PATS diagnostic trouble codes (DTCs) are the only DTCs of concern in this step. Only repair retrieved non-PATS DTCs if a customer concern is reported.
    • Check for PATS DTCs.
    • Were any PATS DTCs retrieved? 

    Yes  : REFER to ANTI-THEFT - PERIMETER to diagnose the PATS DTCs.

    No  : GO to A3.

  3. A3 CHECK THE AUTOMATIC TRANSMISSION RANGE (TR) SENSOR 
    • Enter the following diagnostic mode on the diagnostic tool: PCM TR sensor PID
    • While observing the PCM TR sensor PID, place the vehicle in PARK and NEUTRAL.
    • Does the PID match the gear selection? 

    Yes  : GO to A4.

    No  : GO to the AUTOMATIC TRANSAXLE/TRANSMISSION - FNR5 -- FUSION, MILAN, ZEPHYR to diagnose the TR sensor.

  4. A4 CHECK THE BATTERY GROUND CABLE 
    • Measure the voltage between the positive battery post and the battery ground cable connection at the engine.
      Fig 1: Checking Battery Ground Cable
      G04681307Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes  : GO to A5.

    No  : INSTALL a new battery ground cable. REFER to BATTERY, MOUNTING AND CABLES . TEST the system for normal operation.

  5. A5 CHECK THE STARTER MOTOR GROUND 
    • Measure the voltage between the positive battery post and the starter motor case.
      Fig 2: Checking Starter Motor Ground
      G04681308Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes  : GO to A6.

    No  : CLEAN the starter motor mounting flange and make sure the starter motor is correctly mounted. TEST the system for normal operation.

  6. A6 CHECK THE POWER SUPPLY TO THE STARTER MOTOR 
    • Measure the voltage between the starter motor B-pin and ground.
      Fig 3: Checking Power Supply To Starter Motor
      G04681309Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes  : GO to A7.

    No  : INSTALL a new positive battery cable. REFER to BATTERY, MOUNTING AND CABLES . TEST the system for normal operation.

  7. A7 CHECK THE STARTER MOTOR B-PIN 
    • Connect one end of a fused (30A) jumper wire to the B-terminal of the starter motor. Momentarily connect the other end of the jumper to the starter motor S-terminal.
      Fig 4: Checking Starter Motor B-Pin
      G04681310Courtesy of FORD MOTOR CO.
    • Did the starter motor engage and the engine crank? 

    Yes  : GO to A8.

    No  : INSTALL a new starter motor. REFER to STARTER MOTOR - 2.3L  or STARTER MOTOR - 3.0L . TEST the system for normal operation.

  8. A8 CHECK THE STARTER MOTOR RELAY POWER 
    • Measure the voltage between smart junction box (SJB) C2280f-1, circuit SBB23 (WH/RD) and ground.
      Fig 5: Checking Starter Motor Relay Power
      G04681311Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes  : GO to A9.

    No  : REPAIR the circuit. TEST the system for normal operation.

  9. A9 CHECK THE START SIGNAL TO THE STARTER MOTOR RELAY 
    • Disconnect: SJB C2280b.
      • NOTE: For manual transaxle, fully disengage the clutch.
      Fig 6: Checking Start Signal To Starter Motor Relay
      G04681312Courtesy of FORD MOTOR CO.
    • Measure the voltage between SJB C2280b-30, circuit CDC35 (BU/WH), harness side and ground with the ignition switch in the START position.
    • Is the voltage greater than 10 volts? 

    Yes  : GO to  A12.

    No  : GO to A10.

  10. A10 CHECK CIRCUIT CDC35 (BU/WH) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Ignition Switch C250.
    • Measure the resistance between SJB C2280b-30, circuit CDC35 (BU/WH), harness side and ignition switch C250-7, circuit CDC35 (BU/WH).
      Fig 7: Checking Circuit CDC35 (BU/WH) For An Open
      G04681313Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 

    Yes  : GO to A11.

    No  : REPAIR the circuit. TEST the system for normal operation.

  11. A11 CHECK CIRCUIT CDC35 (BU/WH) 
    • Measure the voltage between ignition switch C250-4, circuit SBB14 (BN/RD) and ground.
      Fig 8: Checking Circuit CDC35 (BU/WH)
      G04681314Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes  : INSTALL a new ignition switch. TEST the system for normal operation.

    No  : REPAIR the circuit. TEST the system for normal operation.

  12. A12 CHECK THE GROUND SIGNAL TO THE STARTER RELAY 
    • Disconnect: SJB C2280a.
      • NOTE: For manual transaxle, fully disengage the clutch.
      Fig 9: Checking Ground Signal To Starter Relay
      G04681315Courtesy of FORD MOTOR CO.
    • Measure the voltage between SJB C2280b-30, circuit CDC35 (BU/WH) and SJB C2280a-18, circuit CDC12 (YE), while placing the ignition switch in the START position.
    • Is the voltage greater than 10 volts? 

    Yes  : GO to  A15.

    No  : GO to A13.

  13. A13 CHECK CIRCUIT CDC12 (YE) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: PCM C175B.
    • Measure the resistance between SJB C2280a-18, circuit CDC12 (YE), harness side and PCM C175B-34, circuit CDC12 (YE), harness side.
      Fig 10: Checking Circuit CDC12 (YE) For An Open
      G04681316Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 

    Yes  : For 2.3L vehicles, INSTALL a new PCM.

    For 3.0L vehicles, GO to A14.

    No  : REPAIR the circuit. TEST the system for normal operation.

  14. A14 CHECK CIRCUIT CBP13 (GY/BN) FOR POWER TO THE PCM 
    • Measure the voltage between PCM C175b-10, circuit CBP13 (GY/BN) and ground, while placing the ignition switch in the START position.
      Fig 11: Checking Circuit CBP13 (GY/BN) For Power To PCM
      G04681317Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes  : REPLACE the PCM. Refer to ELECTRONIC ENGINE CONTROLS - 2.3L or ELECTRONIC ENGINE CONTROLS - 3.0L (4V) . TEST the system for normal operation.

    No  : REPAIR the circuit. TEST the system for normal operation.

  15. A15 CHECK THE CIRCUIT TO THE STARTER MOTOR 
    • Key in OFF position.
    • Disconnect: Starter Solenoid C197b.
    • Measure the resistance between starter solenoid S-terminal C197b, circuit CDC25 (BN/GN) harness side and the SJB C2280a-17, circuit CDC25 (BN/GN) harness side.
      Fig 12: Checking Circuit To Starter Motor
      G04681318Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 

    Yes  : INSTALL a new SJB. TEST the system for normal operation.

    No  : REPAIR the circuit. TEST the system for normal operation.

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