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Pinpoint Test I : The DCDC (Direct Current/Direct Current Converter Control Module) Does Not Respond To The Diagnostic Scan Tool

WARNING: This page is about a different car, the 2019 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
  1. Refer to OEM WIRING DIAGRAMS FOR MODULE COMMUNICATIONS NETWORK - CELL 14 for schematic and connector information. Refer to OEM WIRING DIAGRAMS FOR Auto-Start-Stop System - CELL 40 for schematic and connector information.

    Normal Operation and Fault Conditions 

    The DCDC communicates on the HS-CAN1.

    Possible Sources 

    • Fuse
    • Wiring, terminals and connector
    • DCDC

    Visual Inspection and Pre-checks 

    • Verify High Current BJB fuse 3 (50A) and BJB fuse 23 (15A) are OK.

  2. I1 CHECK THE DCDC (DIRECT CURRENT/DIRECT CURRENT CONVERTER CONTROL MODULE) VOLTAGE SUPPLY CIRCUITS

    • Ignition OFF.

    • Disconnect: DCDC C2513.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2513-3
      GFD385083Courtesy of FORD MOTOR COMPANY
      		 Ground
      C2513-7
      GFD385083Courtesy of FORD MOTOR COMPANY
      		 Ground
      C2513-8
      GFD385083Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the voltages greater than 11 volts? 

    Yes  GO to  I2
    No  VERIFY High Current BJB fuse 3 (50A) or BJB fuse 23 (15A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams service information to identify the possible causes of the circuit short.

  3. I2 CHECK THE DCDC (DIRECT CURRENT/DIRECT CURRENT CONVERTER CONTROL MODULE) GROUND CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2513-6
      GFD385385Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance less than 3 ohms? 

    Yes  GO to  I3
    No  REPAIR the circuit.

  4. I3 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE DCDC (DIRECT CURRENT/DIRECT CURRENT CONVERTER CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

    • Disconnect GWM C2431.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2513-1
      GFD385385Courtesy of FORD MOTOR COMPANY
      		 C2431-20
      C2513-4
      GFD385385Courtesy of FORD MOTOR COMPANY
      		 C2431-19

    Are the resistances less than 3 ohms? 

    Yes  CONNECT the GWM. GO to  I4
    No  REPAIR the circuit in question.

  5. I4 CHECK FOR CORRECT DCDC (DIRECT CURRENT/DIRECT CURRENT CONVERTER CONTROL MODULE) OPERATION

    • Ignition OFF.

    • Disconnect and inspect the DCDC connector.

    • 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 DCDC connector. Make sure it seats and latches 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 the service article instructions. If no service articles address this concern, INSTALL a new DCDC. REFER to: Direct Current/Direct Current (DC/DC) Converter Control Module .
    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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