LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2002 >> Cutaway 7.3 F >> Repair and Diagnosis >> External Pages >> Different car >> Section 2409 (Steering Column Switches -- F250-F550 Super Duty) >> Diagnostic Tests >> Steering Column Switches >> Pinpoint Tests >> Pinpoint Test D: No Power in START >> Pinpoint Test D: No Power In Start

Pinpoint Test D: No Power In Start

WARNING: This page is about a different car, the 2008 Ford Pickup, 2008 Ford F550 Super Duty, 2008 Ford F450 Super Duty, and 2008 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.
  1. D1 CHECK THE IGNITION SWITCH 
    • Carry out the Ignition Switch Component Test. Refer to COMPONENT TESTING.
    • Is the ignition switch OK? 
    1. YES  : Go to  D2.
    2. NO  : INSTALL a new ignition switch. REFER to Ignition Switch . TEST the system for normal operation.
  2. D2 CHECK CIRCUIT CDC34 (WH/OG) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Ignition Switch C250
    • Disconnect: SJB C2280B
    • Disconnect: Run/Start Relay
      • Fig 1: Measuring Resistance Between Ignition Switch C250-1, Circuit CDC34 (WH/OG) & SJB C2280B-45
      GF0023061Courtesy of FORD MOTOR CO.
    • Measure the resistance between ignition switch C250-1, circuit CDC34 (WH/OG), harness side and SJB C2280B-45, circuit CDC34 (WH/OG), harness side.
      • Fig 2: Measuring Resistance Between Ignition Switch C250-1, Circuit CDC34 (WH/OG) & Run/Start Relay Cavity 85
      GF0023056Courtesy of FORD MOTOR CO.
    • Measure the resistance between ignition switch C250-1, circuit CDC34 (WH/OG) and run/start relay cavity 85, circuit CDC34 (WH/OG), harness side.
    • Are the resistances less than 5 ohms? 
    1. YES  : Go to  D3.
    2. NO  : REPAIR circuit CDC34 (WH/OG). TEST the system for normal operation.
  3. D3 CHECK FOR VOLTAGE AT THE RUN/START RELAY 
      Fig 3: Checking For Voltage At Run/Start Relay
      GF0049497Courtesy of FORD MOTOR CO.
    • Measure the voltage between run/start relay cavity 30 and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  D4.
    2. NO  : VERIFY BJB fuse 46 (40A) is OK. If OK, INSTALL a new BJB. TEST the system for normal operation.
  4. D4 CHECK CIRCUIT GD113 (BK/YE) FOR AN OPEN 
      Fig 4: Checking Circuit GD113 (BK/YE) For An Open
      GF0049498Courtesy of FORD MOTOR CO.
    • Measure the resistance between run/start relay cavity 86, circuit GD113 (BK/YE) and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  D5.
    2. NO  : REPAIR circuit GD113 (BK/YE). TEST the system for normal operation.
  5. D5 CHECK THE RUN/START RELAY 
    • Carry out the Mini ISO Relay Component Test. Refer to COMPONENT TESTING.
    • Is the relay OK? 
    1. YES  : Go to  D6.
    2. NO  : INSTALL a new relay. TEST the system for normal operation.
  6. D6 CHECK CIRCUIT CDC35 (BU/WH) FOR AN OPEN 
    • Disconnect: SJB C2280E (diesel without OTIS)
    • Disconnect: PCM C1332B (diesel with OTIS)
    • Disconnect: PCM C175T (gasoline only)
      • Fig 5: Checking Circuit CDC35 (BU/WH) For An Open - Diesel Engine Vehicles Without OTIS
      GF0049499Courtesy of FORD MOTOR CO.
    • For diesel engine vehicles without OTIS  , measure the resistance between ignition switch C250-10, circuit CDC35 (BU/WH), harness side and SJB C2280E-8, circuit CDC35 (BU/WH), harness side.
      • Fig 6: Checking Circuit CDC35 (BU/WH) For An Open - Diesel Engine Vehicles With OTIS
      GF0049491Courtesy of FORD MOTOR CO.
    • For diesel engine vehicles with OTIS  , measure the resistance between ignition switch C250-10, circuit CDC35 (BU/WH), harness side and SJB C1232B-26, circuit CDC35 (BU/WH), harness side.
      • Fig 7: Checking Circuit CDC35 (BU/WH) For An Open - Gasoline Engine Vehicles
      GF0049493Courtesy of FORD MOTOR CO.
    • For gasoline engine vehicles  , measure the resistance between ignition switch C250-10, circuit CDC35 (BU/WH), harness side and PCM C175T-44, circuit CDC35 (BU/WH), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  D7.
    2. NO  : REPAIR circuit CDC35 (BU/WH). TEST the system for normal operation.
  7. D7 CHECK THE SJB CONNECTOR 
    • Check SJB C2280B for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Connect: SJB C2280B
    • Make sure the connector is seated correctly, then operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES article. TEST the system for normal operation.
    2. NO  : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector.
scientia non olet · About LEMON Manuals