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Pinpoint Test B: P0563

  1. Refer to TRANSMISSION CONTROLS for schematic and connector information.

    Normal Operation and Fault Conditions 

    The GSM requires an operating voltage between 9 and 16 volts. The GSM receives this voltage through a fused circuit from the BCM and has dual ground circuits. An inoperative charging system or overcharging condition may result in the GSM setting a DTC.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    GSM P0563:00 System Voltage High: No Sub Type Information This DTC indicates the GSM supply voltage rose above 16 volts.

    Possible Sources 

    • Charging system concern
    • Battery charging or jump starting event
    • Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
    • GSM

  2. B1 CHECK ALL MODULES FOR HIGH VOLTAGE DIAGNOSTIC TROUBLE CODES (DTCS)

    • Using a diagnostic scan tool, retrieve all continuous memory diagnostic trouble codes (CMDTCs) from all modules.

    Are any high voltage diagnostic trouble codes (DTCs) present in other modules? 

    Yes  DIAGNOSE the vehicle charging concern. REFER to: Charging System .
    No  GO to  B2

  3. B2 CHECK THE BATTERY VOLTAGE

    • Start the vehicle (Ready indicator light ON).

    • Turn off the headlamps, blower, and all other accessories

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      GFD609550Courtesy of FORD MOTOR COMPANY

    Is the battery voltage less than 16 volts? 

    Yes  GO to  B3
    No  DIAGNOSE the overcharging condition. REFER to: Charging System .

  4. B3 RECHECK THE GSM (GEAR SHIFT MODULE) FOR DTC (DIAGNOSTIC TROUBLE CODE) P0563

    NOTE: If a GSM self-test is carried out, the driver door must be fully closed. A false P166B DTC may set if the driver door is not fully closed during the self-test.

    • Using a diagnostic scan tool, clear all diagnostic trouble codes (DTCs) from the GSM.

    • Ignition OFF.

    • Ignition ON.

    • Using a diagnostic scan tool, carry out the GSM self-test.

    Is DTC P0563 present? 

    Yes  GO to  B4
    No  The system is operating properly at this time. The DTC may have been set previously during a battery charging event.

  5. B4 CHECK FOR CORRECT GSM (GEAR SHIFT MODULE) OPERATION

    • Ignition OFF.

    • Disconnect and inspect the GSM 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

    • Connect the GSM 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 for an applicable TSB, GSB, SSM, or FSA. If a service bulletin exists for this concern, discontinue this test and follow bulletin instructions. If none address this concern, INSTALL a new GSM. REFER to: Gear Shift Module (GSM) .
    No  The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
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