LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 789 (Starting System - Gasoline Engines - F250-F550) >> Diagnostic Tests >> Starting System >> Pinpoint Test >> Pinpoint Test A: The Engine Does Not Crank >> Pinpoint Test A: The Engine Does Not Crank

Pinpoint Test A: The Engine Does Not Crank

WARNING: This page is about a different car, the 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Cab & Chassis. 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 BATTERY GROUND CABLE 
    • Measure the voltage between the positive battery post and the battery ground cable connection on the engine.
      • Fig 1: Checking Battery Ground Cable
      GF0005963Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A3.
    2. NO  : INSTALL a new battery ground cable. REFER to BATTERY, MOUNTING AND CABLES article. TEST the system for normal operation.
  3. A3 CHECK THE STARTER MOTOR GROUND 
    • Measure the voltage between the battery positive post and the starter motor case.
      • Fig 2: Checking Starter Motor Ground
      GF0005964Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A4.
    2. NO  : CLEAN the starter motor mounting flange and make sure the starter motor is correctly mounted. TEST the system for normal operation.
  4. A4 CHECK THE POWER SUPPLY TO THE STARTER MOTOR 
    • Measure the voltage between starter motor B-pin and ground.
      • Fig 3: Checking Power Supply To Starter Motor
      GF0000667Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A5.
    2. NO  : INSTALL a new positive battery cable. REFER to BATTERY, MOUNTING AND CABLES article. TEST the system for normal operation.
  5. A5 CHECK THE STARTER MOTOR B-PIN 
    • Connect a fused (30A) jumper wire to the B-terminal of the starter motor. Momentarily connect the other lead of the jumper wire to the starter motor S-terminal.
      • Fig 4: Checking Starter Motor B-PIN
      GF0000668Courtesy of FORD MOTOR CO.
    • Did the starter motor engage and the engine crank? 
    1. YES  : Go to  A6.
    2. NO  : INSTALL a new starter motor. REFER to Starter Motor  in this article. TEST the system for normal operation.
  6. A6 CHECK THE START INPUT TO THE STARTER MOTOR 
    • Disconnect: Starter Motor C197a
    • Key in START position.
    • Measure the voltage between starter motor 197a, circuit 113 (YE/LB), harness side and ground, while placing the ignition switch in the START position.
      • Fig 5: Checking Start Input To Starter Motor
      GF0000669Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : CLEAN the starter motor S-terminal and connector. CHECK the wiring and the starter motor for a loose or intermittent connection. TEST the system for normal operation.
    2. NO  : Go to  A7.
  7. A7 CHECK THE START INPUT TO THE STARTER RELAY 
    • Disconnect: Starter Relay
    • Make sure the vehicle is in PARK or NEUTRAL.
    • Key in START position.
    • Measure the voltage between starter relay C2163-85, circuit 33 (WH/PK), and ground.
      • Fig 6: Checking Start Input To Starter Relay
      GF0005965Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A8.
    2. NO  : Go to  A12.
  8. A8 CHECK THE BATTERY SUPPLY TO THE STARTER RELAY 
    • Measure the voltage between starter relay C2163-30, and ground.
      • Fig 7: Checking Battery Supply To Starter Relay
      GF0005966Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A9.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  9. A9 CHECK THE GROUND SIGNAL TO THE STARTER RELAY 
    • Key in START position.
    • Measure the voltage between starter relay C2163-86, circuit 329 (PK) and C2163-85, circuit 33 (WH/PK), while placing the ignition switch in the START position.
      • Fig 8: Checking Ground Signal To Starter Relay
      GF0005967Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A11.
    2. NO  : Go to  A10.
  10. A10 CHECK CIRCUIT 329 (PK) FOR AN OPEN 
    • Disconnect: PCM C175b
    • Measure the resistance between starter relay C2163-86, circuit 329 (PK), harness side and PCM C175b-2, circuit 329 (PK), harness side.
      • Fig 9: Checking Circuit 329 (PK) For Open
      GF0005968Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : DIAGNOSE the PCM. REFER to the INTRODUCTION - GASOLINE ENGINES article.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  11. A11 CHECK CIRCUIT 113 (YE/LB) FOR AN OPEN 
    • Disconnect: Starter Motor C197a
    • Measure the resistance between starter relay C2163-87, circuit 113 (YE/LB), harness side and starter motor C197a, circuit 113 (YE/LB), harness side.
      • Fig 10: Checking Circuit 113 (YE/LB) For Open
      GF0005969Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new starter relay. TEST the system for normal operation.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  12. A12 CHECK THE START INPUT TO CJB FUSE 31 (15A) 
    • Disconnect: CJB Fuse 31 (15A)
    • Key in START position.
    • Measure the voltage between CJB fuse 31 (15A) input cavity and ground, while placing the ignition switch in the START position.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A13.
    2. NO  : Go to  A14.
  13. A13 CHECK CIRCUIT 33 (WH/PK) FOR AN OPEN 
    • Measure the resistance between CJB C270h-8, circuit 33 (WH/PK), harness side and starter relay C2163-85, circuit 33 (WH/PK), harness side.
      • Fig 11: Checking Circuit 33 (WH/PK) For Open
      GF0005970Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : DIAGNOSE the PCM. REFER to the INTRODUCTION - GASOLINE ENGINES article.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  14. A14 CHECK THE IGNITION SWITCH 
    • Carry out the ignition switch component test. Refer to the Wiring Diagram manual.
    • Did the ignition switch pass the component test? 
    1. YES  : REPAIR circuit 1522 (DG). TEST the system for normal operation.
    2. NO  : INSTALL a new ignition switch. REFER to STEERING COLUMN SWITCHES article. TEST the system for normal operation.
scientia non olet · About LEMON Manuals