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Home >> Ford >> 2002 >> Cutaway 7.3 F >> Repair and Diagnosis >> External Pages >> Different car >> Section 2825 (Steering Column Switches -- F250-F550 Super Duty) >> Diagnosis And Testing >> 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 2010 Ford Pickup, 2010 Ford F550 Super Duty, 2010 Ford F450 Super Duty, and 2010 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 
    • Yes:  GO to A2  .
    • 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  ?
    • Yes:  GO to A3  .
    • No:  GO to A8  .
  3. A3 ISOLATE THE CDIM 
    • Disconnect: CDIM  C2500.
    • 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.
      Fig 1: Connecting Fused Jumper Wire Between CDIM C2500-1 And CDIM C2500-8
      G06762827Courtesy of FORD MOTOR CO.
    • 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? 
    • Yes:  GO to A4  .
    • No:  GO to A5  .
  4. A4 CHECK THE CDIM GROUND CIRCUIT GD133 (BK) FOR AN OPEN 
    • Ignition OFF.
    • Measure the resistance between CDIM  C2500-11, circuit GD133 (BK), harness side and ground.
      Fig 2: Measuring Resistance Between CDIM C2500-11, Circuit GD133 (BK) And Ground
      G06762828Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  GO to A5  .
    • No:  REPAIR circuit GD133 (BK). TEST the system for normal operation.
  5. A5 CHECK FOR VOLTAGE TO THE IGNITION SWITCH AND CDIM 
    • Ignition OFF.
    • Disconnect: Ignition Switch C250.
    • Measure the voltage between ignition switch C250-8, circuit SBP27 (BU/RD), harness side and ground.
      Fig 3: Measuring Voltage Between Ignition Switch C250-8 And Ground
      G06762829Courtesy of FORD MOTOR CO.
    • Measure the voltage between CDIM  C2500-7, circuit SBP27 (BU/RD), harness side and ground.
      Fig 4: Measuring Voltage Between CDIM C2500-7 And Ground
      G06762830Courtesy of FORD MOTOR CO.
    • Are the voltages greater than 10 volts? 
    • Yes:  GO to A6  .
    • No:  VERIFY SJB  fuse 27 (20A) is OK. If OK, REPAIR circuit SBP27 (BU/RD). If not OK, REFER to the appropriate SYSTEM WIRING DIAGRAMS article 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 
    • 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.
      Fig 5: Measuring Resistance Between CDIM C2500-14 And Ignition Switch C250-9 And Ground
      G06762831Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  GO to A7  .
    • 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.
    • 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 6: Measuring Resistance Between Ignition Switch C250-1 And SJB C2280B-45
      G06762832Courtesy 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 7: Measuring Resistance Between Ignition Switch C250-5 And SJB C2280A-3
      G06126033Courtesy 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 8: Measuring Resistance Between Ignition Switch C250-1 And Run/Start Relay Cavity 85
      G06762834Courtesy 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 9: Measuring Resistance Between Ignition Switch C250-10 And PCM C1232B-26
      G06762835Courtesy 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.
      Fig 10: Measuring Resistance Between CDIM C2500-8 And SJB C2280A-4
      G06762836Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
    • Yes:  GO to A11  .
    • No:  REPAIR the affected circuit (s). TEST the system for normal operation.
  8. A8 CHECK FOR VOLTAGE TO THE IGNITION SWITCH 
    • Ignition OFF.
    • Disconnect: Ignition Switch C250.
    • 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.
      Fig 11: Measuring Voltage Between Ignition Switch C250-8 And Ground
      G06126032Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes:  GO to A9  .
    • No:  VERIFY SJB  fuse 27 (20A) is OK. If OK, REPAIR circuit SBP27 (BU/RD). If not OK, REFER to the appropriate SYSTEM WIRING DIAGRAMS article 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:
      RESISTANCE REFERENCE

      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
      C250-10(1) CDC35 (BU/WH)/CDC38 (WH/VT) C2280E-8
      (1) For diesel engine vehicles without OTIS.
    • 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 12: Measuring Resistance Between Ignition Switch C250-1 And Run/Start Relay Cavity 85
      G06762834Courtesy 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 13: Measuring Resistance Between Ignition Switch C250-10 And PCM C175T-44
      G06762839Courtesy of FORD MOTOR CO.
    • For diesel engine vehicles  , 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 14: Measuring Resistance Between Ignition Switch C250-10 And PCM C1232B-26
      G06762835Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
    • Yes:  GO to A10  .
    • 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 (all vehicles).
    • Connect: PCM C1232B (diesel only).
    • 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? 
    • Yes:  INSTALL a new SJB  . REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation.
    • 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? 
    • Yes:  INSTALL a new SJB  . REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation.
    • No:  The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector.
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