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Pinpoint Test A: The Engine Does Not Crank

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
  1. A1 CHECK THE BATTERY 
    1. YES  : Go to  A2.
    2. NO  : CHARGE or INSTALL a new battery as necessary. REFER to BATTERY, MOUNTING AND CABLES article. TEST the system for normal operation.
  2. A2 CHECK THE PASSIVE ANTI-THEFT SYSTEM (PATS) AND PCM FOR DTCs 
    • Check for PATS and PCM DTCs.
    • Were any PATS and PCM DTCs retrieved? 
    1. YES  : REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article to diagnose the PATS DTCs. REFER to appropriate Engine Performance article to diagnose the PCM DTCs.
    2. NO  : Go to  A3.
  3. A3 CHECK THE TR SENSOR PID 
    • Enter the following diagnostic mode on the diagnostic tool: PCM DataLogger/PID
    • While observing the PCM TR sensor PID, place the vehicle in PARK and NEUTRAL.
    • Does the PID match the gear selection? 
    1. YES  : Go to  A4.
    2. NO  : Go to AUTOMATIC TRANSAXLE/TRANSMISSION - 4R70E/4R75E to diagnose the TR sensor.
  4. A4 CHECK THE BATTERY GROUND CABLE 
      Fig 1: Checking Battery Ground Cable
      GF0005963Courtesy of FORD MOTOR CO.
    • Measure the voltage between the positive battery post and the battery ground cable connection at the engine.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A5.
    2. NO  : INSTALL a new battery ground cable. REFER to BATTERY, MOUNTING AND CABLES article. TEST the system for normal operation.
  5. A5 CHECK THE STARTER MOTOR GROUND 
      Fig 2: Checking Starter Motor Ground
      GF0029391Courtesy of FORD MOTOR CO.
    • Measure the voltage between the positive battery post and the starter motor case.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A6.
    2. 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 
      Fig 3: Checking Power Supply To Starter Motor
      GF0029392Courtesy of FORD MOTOR CO.
    • Measure the voltage between starter motor solenoid C197A-1, circuit 2037 (RD) and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A7.
    2. NO  : INSTALL a new positive battery cable. REFER to BATTERY, MOUNTING AND CABLES article. TEST the system for normal operation.
  7. A7 CHECK THE STARTER MOTOR B-PIN 
      Fig 4: Checking Starter Motor B-Pin
      GF0029393Courtesy of FORD MOTOR CO.
    • Connect one end of a fused jumper wire to starter motor solenoid C197A-1, circuit 2037 (RD). Momentarily connect the other end of the jumper to starter motor solenoid C197B-1, circuit 0113 (Y/LB).
    • Did the starter motor engage and the engine crank? 
    1. YES  : Go to  A8.
    2. NO  : INSTALL a new starter motor. REFER to Starter Motor . TEST the system for normal operation.
  8. A8 CHECK FOR POWER TO THE STARTER MOTOR RELAY 
    CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
    • Key in OFF position.
    • Disconnect: Starter Motor Relay
      • Fig 5: Checking For Power To Starter Motor Relay
      GF0012001Courtesy of FORD MOTOR CO.
    • Measure the voltage between starter motor relay pin cavity 30, circuit 1523 (DG) and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A9.
    2. NO  : REPAIR circuit 1523 (DG). TEST the system for normal operation.
  9. A9 CHECK FOR START REQUEST AT THE STARTER RELAY 
    CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
    • Disconnect: Starter Motor Relay
    • Key in START position.
      • Fig 6: Checking For Start Request At Starter Relay
      GF0044605Courtesy of FORD MOTOR CO.
    • Measure the voltage between PDB starter motor relay pin cavity 86, circuit 0032 (RD/LB) with 4R70E/4R75E transmission or circuit 1093 (TN/RD) with a TorqShift® transmission and ground with the ignition switch in the START position.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A10.
    2. NO  : Go to  A12.
  10. A10 CHECK THE RELAY GROUND CIRCUIT 
    CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
    • Disconnect: Starter Motor Relay
    • Key in START position.
      • Fig 7: Checking Relay Ground Circuit
      GF0012005Courtesy of FORD MOTOR CO.
    • Measure the voltage between starter motor relay pin cavity 86, circuit 0032 (RD/LB) with 4R70E/4R75E transmission or circuit 1093 (TN/RD) with a TorqShift® transmission and starter motor relay pin cavity 85, circuit 1419 (LG/YE) with the ignition switch in the START position.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A17.
    2. NO  : Go to  A11.
  11. A11 CHECK CIRCUIT 1419 (LG/YE) FOR AN OPEN 
    CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
    • Key in OFF position.
    • Disconnect: Starter Motor Relay
    • Disconnect: PCM C175B
      • Fig 8: Checking Circuit 1419 (LG/YE) For An Open
      GF0044606Courtesy of FORD MOTOR CO.
    • Measure the resistance between starter motor relay pin cavity 85, circuit 1419 (LG/YE) and PCM C175B, circuit 1419 (LG/YE), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : DIAGNOSE the PCM. REFER to the appropriate Engine Performance article.
    2. NO  : REPAIR circuit 1419 (LG/YE). TEST the system for normal operation.
  12. A12 CHECK FOR VOLTAGE AT FUSE 33 
    CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
    • Key in OFF position.
    • Disconnect: CJB 33 (10A)
    • Key in START position.
      • Fig 9: Checking For Voltage At Fuse 33
      GF0012003Courtesy of FORD MOTOR CO.
    • Measure the voltage between CJB fuse 33 cavity A53, circuit 33 (WH/PK) and ground while holding the key in the START position.
    • Is the voltage greater than 10 volts? 
    1. YES  : If the vehicle is equipped with a TorqShift® transmission, REPAIR circuit 1093 (TN/RD). TEST the system for normal operation.
    2. If the vehicle is equipped with a 4R70E/4R75E transmission, go to  A13.
    3. NO  : Go to  A15.
  13. A13 CHECK CIRCUIT 1093 (TN/RD) FOR AN OPEN 
    CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
    • Key in OFF position.
    • Disconnect: CJB Fuse 33 (10A)
    • Disconnect: Digital TR Sensor C167
      • Fig 10: Checking Circuit 1093 (TN/RD) For An Open
      GF0044607Courtesy of FORD MOTOR CO.
    • Measure the resistance between instrument panel fuse 33 cavity A66, circuit 1093 (TN/RD) and digital TR sensor C167-12, circuit 1093 (TN/RD), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  A14.
    2. NO  : REPAIR circuit 1093 (TN/RD). TEST the system for normal operation.
  14. A14 CHECK CIRCUIT 0032 (RD/LB) FOR AN OPEN 
    CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
    • Key in OFF position.
    • Disconnect: Starter Motor Relay
    • Disconnect: Digital TR Sensor C167
      • Fig 11: Checking Circuit 0032 (RD/LB) For An Open
      GF0044608Courtesy of FORD MOTOR CO.
    • Measure the resistance between starter motor relay pin cavity 86, circuit 0032 (RD/LB) and digital TR sensor C167-10, circuit 0032 (RD/LB), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new digital TR sensor. TEST the system for normal operation.
    2. NO  : REPAIR circuit 0032 (RD/LB). TEST the system for normal operation.
  15. A15 CHECK CIRCUIT 1050 (LG/VT) FOR POWER 
    CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
    • Key in OFF position.
    • Disconnect: Ignition Switch C250
    • Key in ON position.
      • Fig 12: Checking Circuit 1050 (LG/VT) For Power
      GF0012004Courtesy of FORD MOTOR CO.
    • Measure the voltage between ignition switch C250-2, circuit 1050 (LG/VT), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A16.
    2. NO  : REPAIR circuit 1050 (LG/VT). TEST the system for normal operation.
  16. A16 CHECK THE IGNITION SWITCH 
    • Carry out the Ignition Switch Component Test. Refer to COMPONENT TESTING.
    • Does the ignition switch test good? 
    1. YES  : REPAIR circuit 0033 (WH/PK). TEST the system for normal operation.
    2. NO  : INSTALL a new ignition switch. TEST the system for normal operation.
  17. A17 CHECK THE CIRCUIT TO THE STARTER MOTOR 
    CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
    • Key in OFF position.
    • Disconnect: Starter Motor Solenoid C197B
    • Disconnect: Starter Motor Relay
      • Fig 13: Checking Circuit To Starter Motor
      GF0044609Courtesy of FORD MOTOR CO.
    • Measure the resistance between starter motor C197B-1, circuit 0113 (YE/LB) and starter motor relay pin cavity 87, circuit 0113 (YE/LB).
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new starter motor relay. TEST the system for normal operation.
    2. NO  : REPAIR circuit 0113 (YE/LB). TEST the system for normal operation.
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