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Pinpoint Test D: P0563

  1. NOTE: The Inverter System Controller (ISC) is referred to as the SOBDMC (Secondary On-Board Diagnostic Control Module C) in the scan tool.

    Normal Operation and Fault Conditions 

    REFER to: Electric Powertrain Control - System Operation and Component Description .

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    SOBDMC P0563:00 System Voltage High: No Sub Type Information This DTC sets when the internal processor voltages are greater than a calibrated range.

    Possible Causes 

    • External excessive voltage
    • 24-volt jump start
    • Inverter System Controller (ISC)

  2. D1 CHECK THE INVERTER SYSTEM CONTROLLER (ISC) CIRCUIT FOR VOLTAGE

    • Ignition OFF.

    • Disconnect Inverter System Controller (ISC) C199A.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C199A Pin 14
      GFD826403Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 10.5 V? 

    Yes  GO to  D2
    No  DIAGNOSE the low voltage symptom. REFER to: DIRECT CURRENT DIRECT CURRENT (DC DC) CONVERTER CONTROL MODULE . Using a diagnostic scan tool, clear the Inverter System Controller (ISC) DTC s.

  3. D2 CHECK THE INVERTER SYSTEM CONTROLLER (ISC) CIRCUIT FOR VOLTAGE

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C199A Pin 14
      GFD826403Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage less than 16V? 

    Yes  GO to  D3
    No  DIAGNOSE the high voltage symptom. REFER to: DIRECT CURRENT DIRECT CURRENT (DC DC) CONVERTER CONTROL MODULE .Using a diagnostic scan tool, clear the Inverter System Controller DTC s.

  4. D3 CHECK FOR INVERTER SYSTEM CONTROLLER (ISC) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Ignition OFF.

    • Connect Inverter System Controller (ISC) C199A.

    • Ignition ON.

    • Using a diagnostic scan tool, clear the Inverter System Controller (ISC) DTC s.

    • Allow the Inverter System Controller (ISC) to complete a normal power down sequence.

    • Using a diagnostic scan tool, perform the Inverter System Controller (ISC) self-test.

    Was DTC P0563 read from the Inverter System Controller (ISC)? 

    Yes  DTC P0563 frequently sets after the vehicle has been jump-started. A key cycle, followed by clearing DTC s is expected to clear this DTC, if the DTC continuously returns, INSTALL a new Inverter System Controller (ISC). REFER to: Inverter System Controller [SOBDMC] .
    No  Test is complete, no faults were found.
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