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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 A: No Power in All Ignition Switch Positions >> Pinpoint Test A: No Power In All Ignition Switch Positions

Pinpoint Test A: No Power In All Ignition Switch Positions

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. A1 CHECK THE IGNITION SWITCH 
    • Carry out the Ignition Switch Component Test. Refer to COMPONENT TESTING.
    • Is the ignition switch OK? 
    1. YES  : Go to  A2.
    2. NO  : INSTALL a new ignition switch. REFER to Ignition Switch . TEST the system for normal operation.
  2. A2 CHECK VEHICLE EQUIPMENT 
    • Verify that the vehicle is equipped with a CDIM.
    • Is the vehicle equipped with a CDIM? 
    1. YES  : Go to  A3.
    2. NO  : Go to  A8.
  3. A3 ISOLATE THE CDIM 
    • Disconnect: CDIM C2500
      • Fig 1: Isolating CDIM
      GF0049486Courtesy of FORD MOTOR CO.
    • Connect a fused jumper wire between:
      • CDIM C2500-1, circuit CDC63 (YE/OG), harness side and CDIM C2500-8, circuit CDC32 (BN/YE), harness side.
      • CDIM C2500-7, circuit SBP27 (BU/RD), harness side and CDIM C2500-14, circuit CDC62 (WH/VT), harness side.
    • Check for power in all ignition switch positions:
      • Turn the ignition switch to the ACC position and operate the radio, windshield wipers or blower motor.
      • Turn the ignition switch to the RUN position and operate the radio, windshield wipers or blower motor.
      • Start the engine.
    • Is power present in all ignition switch positions? 
    1. YES  : Go to  A4.
    2. NO  : Go to  A5.
  4. A4 CHECK THE CDIM GROUND CIRCUIT GD133 (BK) FOR AN OPEN 
    • Key in OFF position.
      • Fig 2: Checking CDIM Ground Circuit GD133 (BK) For An Open
      GF0049487Courtesy of FORD MOTOR CO.
    • Measure the resistance between CDIM C2500-11, circuit GD133 (BK), harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  A5.
    2. NO  : REPAIR circuit GD133 (BK). TEST the system for normal operation.
  5. A5 CHECK FOR VOLTAGE TO THE IGNITION SWITCH AND CDIM 
    • Key in OFF position.
    • Disconnect: Ignition Switch C250
      • Fig 3: Measuring Voltage Between Ignition Switch C250-8, Circuit SBP27 (BU/RD)
      GF0049488Courtesy of FORD MOTOR CO.
    • Measure the voltage between ignition switch C250-8, circuit SBP27 (BU/RD), harness side and ground.
      • Fig 4: Measuring Voltage Between Ignition Switch C2500-7, Circuit SBP27 (BU/RD)
      GF0049489Courtesy of FORD MOTOR CO.
    • Measure the voltage between CDIM C2500-7, circuit SBP27 (BU/RD), harness side and ground.
    • Are the voltages greater than 10 volts? 
    1. YES  : Go to  A6.
    2. NO  : VERIFY SJB fuse 27 (20A) is OK. If OK, REPAIR circuit SBP27 (BU/RD). If not OK, REFER SYSTEM WIRING DIAGRAMS - F250 SUPER DUTY to identify the possible causes of the short circuit. REPAIR as necessary. TEST the system for normal operation.
  6. A6 CHECK CIRCUIT CDC62 (WH/VT) FOR AN OPEN 
      Fig 5: Checking Circuit CDC62 (WH/VT) For An Open
      GF0049490Courtesy of FORD MOTOR CO.
    • Measure the resistance between CDIM C2500-14, circuit CDC62 (WH/VT), harness side and ignition switch C250-9, circuit CDC62 (WH/VT), harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  A7.
    2. NO  : REPAIR circuit CDC62 (WH/VT). TEST the system for normal operation.
  7. A7 CHECK THE IGNITION AND CDIM CIRCUITS FOR AN OPEN 
    • Disconnect: SJB C2280A
    • Disconnect: SJB C2280B
    • Disconnect: PCM C1232B
    • Disconnect: One-Touch Integrated Start (OTIS)
    • Disconnect: Run/Start Relay
      • Fig 6: Measuring Resistance Between Ignition Switch C250-1, Circuit CDC34 (WH/OG)
      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 7: Measuring Resistance Between Ignition Switch C250-5, Circuit CDC33 (WH/OG)
      GF0023052Courtesy of FORD MOTOR CO.
    • Measure the resistance between ignition switch C250-5, circuit CDC33 (VT/GN), harness side and SJB C2280A-3, circuit CDC33 (VT/GN), harness side.
      • Fig 8: Measuring Resistance Between Ignition Switch C250-1, Circuit CDC34 (WH/OG)
      GF0023056Courtesy of FORD MOTOR CO.
    • Measure the resistance between ignition switch C250-1, circuit CDC34 (WH/OG), harness side and run/start relay cavity 85, circuit CDC34 (WH/OG), harness side.
      • Fig 9: Measuring Resistance Between Ignition Switch C250-10, Circuit CDC35 (BU/WH)
      GF0049491Courtesy of FORD MOTOR CO.
    • Measure the resistance between ignition switch C250-10, circuit CDC35 (BU/WH), harness side and PCM C1232B-26, circuit CDC35 (BU/WH), harness side.
      • Fig 10: Measuring Resistance Between Ignition Switch C2500-8, Circuit CDC32 (BN/YE)
      GF0049492Courtesy of FORD MOTOR CO.
    • Measure the resistance between CDIM C2500-8, circuit CDC32 (BN/YE), harness side and SJB C2280A-4, circuit CDC32 (BN/YE), harness side.
    • Are the resistances less than 5 ohms? 
    1. YES  : Go to  A11.
    2. NO  : REPAIR the affected circuit(s). TEST the system for normal operation.
  8. A8 CHECK FOR VOLTAGE TO THE IGNITION SWITCH 
    • Key in OFF position.
    • Disconnect: Ignition Switch C250
      • Fig 11: Checking For Voltage To Ignition Switch
      GF0023050Courtesy of FORD MOTOR CO.
    • Measure the voltage between ground and:
      • ignition switch C250-8, circuit SBP27 (BU/RD), harness side.
      • ignition switch C250-9, circuit SBP27 (BU/RD), harness side.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A9.
    2. NO  : VERIFY SJB fuse 27 (20A) is OK. If OK, REPAIR circuit SBP27 (BU/RD). If not OK, REFER SYSTEM WIRING DIAGRAMS - F250 SUPER DUTY to identify the possible causes of the short circuit. REPAIR as necessary. TEST the system for normal operation.
  9. A9 CHECK THE IGNITION CIRCUITS FOR AN OPEN 
    • Disconnect: SJB C2280A (all vehicles)
    • Disconnect: SJB C2280B (all vehicles)
    • Disconnect: SJB C2280E (diesel without OTIS)
    • Disconnect: PCM C1232B (diesel with OTIS)
    • Disconnect: PCM C175T (gasoline only)
    • Disconnect: Run/Start Relay (all vehicles)
    • For all vehicles  , measure the resistance between the ignition switch connector and the SJB connectors using the following table:
      Ignition Switch Circuit SJB
      C250-1 CDC34 (WH/OG) C2280B-45
      C250-5 CDC33 (VT/GN) C2280A-3
      C250-7 CDC32 (BN/YE) C2280A-4
      C250-10a CDC35 (BU/WH) C2280E-8

      a For diesel engine vehicles without OTIS.

      • Fig 12: Checking Ignition Circuits For An Open - All Vehicles
      GF0023056Courtesy of FORD MOTOR CO.
    • For all vehicles  , measure the resistance between ignition switch C250-1, circuit CDC34 (WH/OG), harness side and run/start relay cavity 85, circuit CDC34 (WH/OG), harness side.
      • Fig 13: Checking Ignition Circuits 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.
      • Fig 14: Checking Ignition Circuits 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 PCM C1232B-26, circuit CDC35 (BU/WH), harness side.
    • Are the resistances less than 5 ohms? 
    1. YES  : Go to  A10.
    2. NO  : REPAIR the affected circuit(s). TEST the system for normal operation.
  10. A10 CHECK THE SJB CONNECTORS 
    • Check SJB connectors C2280A, C2280B and C2280E (diesel without OTIS) for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Connect: SJB C2280A (all vehicles)
    • Connect: SJB C2280B (all vehicles)
    • Connect: SJB C2280E (diesel without OTIS)
    • Connect: PCM C1232B (diesel with OTIS)
    • Connect: PCM C175T (gasoline only)
    • Connect: Ignition Switch C250 (all vehicles)
    • Connect: Run/Start Relay (all vehicles)
    • Make sure the connectors are 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.
  11. A11 CHECK THE SJB CONNECTORS 
    • Check SJB connectors C2280A and C2280B for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Connect: SJB C2280A
    • Connect: SJB C2280B
    • Connect: PCM C1232B
    • Connect: OTIS Diode
    • Connect: Run/Start Relay
    • Connect: Ignition Switch C250
    • Connect: CDIM C2500
    • Make sure the connectors are 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.
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