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Pinpoint Test O: Traction Control System Cannot Be Disabled

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. O1 CHECK FOR COMMUNICATION DTCs 
    • Check for any ABS module communication DTCs.

    Is DTC U0155:00 present? 

  2. O2 CHECK THE STABILITY TRACTION CONTROL SWITCH STAB_CTRL_SW PID 
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: IPC DataLogger.
    • Access the IPC PID STAB_CTRL_SW.
    • Monitor the PID STAB_CTRL_SW while pressing and releasing the traction control switch.

    Does the PID STAB_CTRL_SW show the traction control switch changing from on to off? 

    • Yes  : The system is operating correctly at this time.
    • No  : GO to O3  .
  3. O3 CHECK THE STABILITY TRACTION CONTROL SWITCH 
    • Ignition OFF.
    • Disconnect: Stability/Traction Control Switch C2267  .
    • Measure the resistance between the traction control switch pin 7, component side, and pin 1, component side while pressing and releasing the switch.
      Fig 1: Measuring Resistance Between Traction Control Switch Pin 7 And Pin 1
      G07473860Courtesy of FORD MOTOR CO.

    Is the resistance greater than 10, 000 ohms with the switch released and less than 5 ohms with the switch pressed? 

    • Yes  : GO to O4  .
    • No  : INSTALL a new hazard flasher lamp switch. REFER to EXTERIOR LIGHTING . TEST the system for normal operation.
  4. O4 CHECK STABILITY/TRACTION CONTROL CIRCUIT FOR AN OPEN 
    • Measure the resistance between hazard flasher lamp switch C2267-7  , circuit CCA15 (YE/GY), harness side and IPC C220-7  , circuit CCA15 (YE/GY), harness side.
      Fig 2: Measuring Resistance Between Hazard Flasher Lamp Switch C2267-7 And IPC C220-7
      G07473861Courtesy of FORD MOTOR CO.

    Is the resistance less than 5 ohms? 

    • Yes  : GO to O5  .
    • No  : REPAIR circuit CCA15 (YE/GY) for an open. TEST the system for normal operation.
  5. O5 CHECK STABILITY/TRACTION CONTROL CIRCUIT FOR A SHORT TO GROUND 
    • Measure the resistance between hazard flasher lamp switch C2267-7  , circuit CCA15 (YE/GY), harness side and ground.
      Fig 3: Measuring Resistance Between Hazard Flasher Lamp Switch C2267-7, Circuit CCA15 (YE/GY) And Ground
      G07473862Courtesy of FORD MOTOR CO.

    Is the resistance greater than 10, 000 ohms? 

    • Yes  : GO to O6  .
    • No  : REPAIR circuit CCA15 (YE/GY) for a short to ground. TEST the system for normal operation.
  6. O6 CHECK GROUND CIRCUIT FOR AN OPEN 
    • Disconnect: Negative Battery Cable.
    • Measure the resistance between hazard flasher lamp switch C2267-1  , circuit GD116 (BK/VT), harness side and ground.
      Fig 4: Measuring Resistance Between Hazard Flasher Lamp Switch C2267-1, Circuit GD116 (BK/VT) And Ground
      G07473863Courtesy of FORD MOTOR CO.

    Is the resistance less than 5 ohms? 

    • Yes  : GO to O7  .
    • No  : REPAIR circuit GD116 (BK/VT) for an open. TEST the system for normal operation.
  7. O7 CHECK THE IPC CONNECTOR 
    • Ignition OFF.
    • Check IPC connector for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect the IPC connector and make sure that it is seated correctly.
    • Make sure the connector is seated correctly then operate the system and verify the concern is still present.

    Is the concern still present? 

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