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Pinpoint Test F: The Steering Column Control Module (SCCM) Does Not Respond To The Diagnostic Scan Tool

  1. Refer to Module Communications Network for schematic and connector information. Refer to Cruise Control for schematic and connector information.

    Normal Operation and Fault Conditions 

    The SCCM communicates on the HS-CAN2.

    Possible Sources 

    • Fuse
    • Wiring, terminals and connector
    • SCCM

    Visual Inspection and Pre-checks 

    • Verify BCM fuse 13 (7.5A) is OK.

  2. F1 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) TERMINATION RESISTANCE

    • Ignition OFF.

    • Disconnect the diagnostic scan tool cable from the DLC.

    • Disconnect GWM C2431.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2431-18
      GFD429294Courtesy of FORD MOTOR COMPANY
      		 C2431-17

    Is the resistance between 108 and 132 ohms? 

    Yes  GO to  F3
    No  GO to  F2

  3. F2 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE SCCM (STEERING COLUMN CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

    • Disconnect SCCM C226A

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C226A-3
      GFD429294Courtesy of FORD MOTOR COMPANY
      		 C2431-18
      C226A-4
      GFD429294Courtesy of FORD MOTOR COMPANY
      		 C2431-17

    Are the resistances less than 3 ohms? 

    Yes  CONNECT the GWM, GO to  F5
    No  REPAIR the circuit in question.

  4. F3 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C226A-7
      GFD429293Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  GO to  F4
    No  VERIFY the BCM fuse 13 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to OEM Electrical Wiring Diagram Introduction to identify the possible causes of the circuit short.

  5. F4 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) GROUND CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C226A-5
      GFD429294Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance less than 3 ohms? 

    Yes  GO to  F5
    No  REPAIR the circuit.

  6. F5 CHECK FOR CORRECT SCCM (STEERING COLUMN CONTROL MODULE) OPERATION

    • Ignition OFF.

    • Disconnect and inspect all the SCCM connectors.

    • Repair:

      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary

    • Reconnect the SCCM connectors. Make sure they seat and latch correctly.

    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA If a service article exists for this concern, DISCONTINUE this test and FOLLOW service article instructions. If no service articles address this concern, INSTALL a new SCCM. Without adaptive steering, REFER to: Steering Column Control Module (SCCM) . With adaptive steering, REFER to: Steering Column Control Module (SCCM) - Vehicles With: Adaptive Steering
    No  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
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