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Home >> Ford >> 2013 >> Focus ST >> Repair and Diagnosis >> External Pages >> Different car >> Section 304 (Instrument Cluster Illumination And Panel Illumination -- (Except Electric)) >> Diagnosis And Testing >> Instrument Panel and Interior Switches Illumination >> Pinpoint Tests >> PINPOINT TEST C: The Steering Wheel Switch(es) Illumination Is Inoperative >> Pinpoint Test C: The Steering Wheel Switch(Es) Illumination Is Inoperative

Pinpoint Test C: The Steering Wheel Switch(Es) Illumination Is Inoperative

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  1. C1 CHECK THE OTHER DIMMABLE LIGHTING SWITCHES 
    • Ignition ON.
    • Place the headlamp switch in the PARKING LAMPS ON position.
    • Place a shop light above the instrument panel ambient light sensor to make sure that the BCM  outputs maximum illumination voltage.
    • Press and hold the instrument panel dimmer switch up to the full illumination position.

    Are all the dimmable steering wheel switches inoperative? 

    1. Yes  : GO to C2 
    2. No  : For the LH  lower switch, GO to  C6

      For the RH  lower switch, GO to  C7

      For the LH  and/or RH  upper switch, GO to  C8

  2. C2 CHECK FOR VOLTAGE TO THE STEERING WHEEL SWITCHES 
    • Place the headlamp switch in the OFF position.
    • Disconnect: SASM  C226A.
    • Disconnect: Clockspring C218A.
    • Ignition ON.
    • Place the headlamp switch in the PARKING LAMPS ON position.
    • Press and hold the instrument panel dimmer switch up to the full illumination position.
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C226A-12  VOLTAGE C218A-4 

    Is the voltage greater than 11 volts? 

    1. Yes  : GO to  C4
    2. No  : GO to C3 
  3. C3 CHECK FOR VOLTAGE TO THE STEERING ANGLE SENSOR MODULE (SASM) 
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C226A-12  VOLTAGE Ground

    Is the voltage greater than 11 volts? 

    1. Yes  : REPAIR the ground circuit.
    2. No  : REPAIR the illumination circuit.
  4. C4 CHECK FOR VOLTAGE TO THE STEERING WHEEL HARNESS 
    • Ignition OFF.
    • Connect: SASM  C226A.
    • Connect: Clockspring C218A.
    • WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment.

      Ignition OFF and wait one minute.

    • Remove the driver airbag.

      REFER to: DRIVER AIRBAG .

    • Disconnect: Clockspring C218B.
    • Ignition ON.
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C218B-7  (component side) VOLTAGE C218B-10  (component side)

    Is the voltage greater than 11 volts? 

    1. Yes  : CONNECT Clockspring C218B.

      For vehicles equipped with a LH  lower switch only, GO to  C6

      For vehicles with multiple steering wheel switches, INSTALL a new steering wheel.

      REFER to: STEERING WHEEL .

    2. No  : GO to C5 
  5. C5 CHECK THE CLOCKSPRING FOR AN OPEN 
    • Ignition OFF.
    • Remove the clockspring.

      REFER to: CLOCKSPRING .

    • Ignition ON.
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C218B-10  (component side) OHM C218A-4  (component side)
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C218B-7  (component side) OHM C218C-7  (component side)

    Are the resistances less than 3 ohms? 

    1. Yes  : INSTALL a new SASM  .

      REFER to: STEERING ANGLE SENSOR MODULE (SASM) .

    2. No  : INSTALL a new clockspring.

      REFER to: CLOCKSPRING .

  6. C6 CHECK THE LEFT HAND (LH) LOWER STEERING WHEEL SWITCH 
    • Ignition OFF.
    • Disconnect: LH  Lower Steering Wheel Switch.
    • Ignition ON.
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C2366-1  VOLTAGE C2366-5 

    Is the voltage greater than 11 volts? 

    1. Yes  : INSTALL a new steering wheel switch.

      REFER to: STEERING WHEEL MULTIFUNCTION SWITCH .

    2. No  : INSTALL a new steering wheel.

      REFER to: STEERING WHEEL .

  7. C7 CHECK THE RIGHT HAND (RH) LOWER STEERING WHEEL SWITCH 
    • Ignition OFF.
    • Disconnect: RH  Lower Steering Wheel Switch.
    • Ignition ON.
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C2367-1  (without Sony sound) VOLTAGE C2367-4  (without Sony sound)
      Positive Lead Measurement/Action Negative Lead
      C3127-2  (with Sony sound) VOLTAGE C3127-3  (with Sony sound)

    Is the voltage greater than 11 volts? 

    1. Yes  : INSTALL a new steering wheel switch.

      REFER to: STEERING WHEEL MULTIFUNCTION SWITCH .

    2. No  : INSTALL a new steering wheel.

      REFER to: STEERING WHEEL .

  8. C8 CHECK FOR VOLTAGE TO THE UPPER (AIRBAG) HARNESS 
    • Ignition OFF.
    • WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment.

      Ignition OFF and wait one minute.

    • Remove the driver airbag.

      REFER to: DRIVER AIRBAG .

    • Disconnect: Inline C260.
    • Ignition ON.
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C260-3  (male) VOLTAGE C260-2  (male)

    Is the voltage greater than 11 volts? 

    1. Yes  : For the LH  upper switch, GO to C9 

      For the RH  upper switch, GO to  C10

    2. No  : INSTALL a new steering wheel.

      REFER to: STEERING WHEEL .

  9. C9 CHECK THE LEFT HAND (LH) UPPER STEERING WHEEL SWITCH 
    • Ignition OFF.
    • Connect: Inline C260.
    • Disconnect: LH  Upper Steering Wheel Switch.
    • Ignition ON.
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C2998-1  VOLTAGE C2998-4 

    Is the voltage greater than 11 volts? 

    1. Yes  : INSTALL a new steering wheel switch.

      REFER to: STEERING WHEEL MULTIFUNCTION SWITCH .

    2. No  : INSTALL a new driver airbag.

      REFER to: DRIVER AIRBAG .

  10. C10 CHECK THE RIGHT HAND (RH) UPPER STEERING WHEEL SWITCH 
    • Ignition OFF.
    • Connect: Inline C260.
    • Disconnect: RH  Upper Steering Wheel Switch.
    • Ignition ON.
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C2999-2  VOLTAGE C2999-3 

    Is the voltage greater than 11 volts? 

    1. Yes  : INSTALL a new steering wheel switch.

      REFER to: STEERING WHEEL MULTIFUNCTION SWITCH .

    2. No  : INSTALL a new driver airbag.

      REFER to: DRIVER AIRBAG .

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