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Home >> Ford >> 2021 >> Explorer Limited Hybrid, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Automatic Transmission External Controls - 10-Speed Automatic Transmission - 10R60) >> Diagnosis And Testing >> External Controls >> Pinpoint Tests >> Pinpoint Test J : DTC P0814, P0915

Pinpoint Test J : DTC P0814, P0915

WARNING: This page is about a different variant/trim than selected.
  1. Refer to Transmission Controls for schematic and connector information.

    Normal Operation and Fault Conditions 

    The GSM has two sensors that monitor the rotary knob position and LEDs indicating the selected range.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    GSM P0814:00 Transmission Range Display Circuit: No Sub Type Information This CMDTC sets if the GSM is sensing an issue with the GSMLED indication.
    GSM P0915:00 Gear Shift Position Circuit "A" Range/Performance: No Sub Type Information This CMDTC sets if the GSM detects a fault with one or both sensors measuring the rotary knob position.

    Possible Sources 

    • Connectors damaged or pushed-out terminals, circuitry open or high resistance in the voltage feed wiring to the GSM or a loose ground.
    • Discharged battery/charging system
    • GSM

  2. J1 VERIFY THE BATTERY IS FULLY CHARGED

    • NOTE: If necessary connect the battery charger to the vehicle battery to insure a steady battery voltage while performing this test.

      VERIFY battery is fully charged before proceeding with this test. REFER to: External Controls .

    Is the battery fully charged? 

    Yes  GO to  J2
    No  CHARGE or INSTALL a new battery if necessary. REFER to: Battery .

  3. J2 CHECK GSM CALIBRATION LEVEL

    • VERIFY the GSM calibration is at the latest level.

    Is the GSM calibration at the latest level? 

    Yes  GO to  J3
    No  REFER to: Module Programming .

  4. J3 CHECK POWER CIRCUIT TO GSM FOR AN OPEN

    • Ignition OFF.

    • Disconnect GSM C3590.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3590-1
      GFD515140Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage 11 volts or greater 

    Yes  GO to  J4
    No  CHECK fuse 12 (7.5A), if OK REPAIR the open circuit, if not OK, REFER to the Introduction to diagnose the short circuit.

  5. J4 CHECK GSM GROUND FOR AN OPEN

    • Ignition OFF.

    • NOTE: INSPECT the ground eyelet G214 and verify it is clean and tight.

      Measure:

      Positive Lead Measurement / Action Negative Lead
      C3590-18
      GFD515141Courtesy of FORD MOTOR COMPANY
      		 Ground
      C3590-9
      GFD515141Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance less than 3 ohms? 

    Yes  GO to  J5
    No  REPAIR the circuit.

  6. J5 CHECK THE GSM (GEAR SHIFT MODULE) CONTINUOUS MEMORY DTC (DIAGNOSTIC TROUBLE CODE) S

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

    • Clear the CMDTCs.

    • Ignition OFF.

    • Wait 10 seconds.

    • Start the engine.

    • Select REVERSE.

    • Select NEUTRAL.

    • Select DRIVE.

    • Select PARK.

    • Repeat the GSM self-test.

    Is DTC P0814 or P0915 the only DTC retrieved again? 

    Yes  CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new GSM. REFER to: Gear Shift Module (GSM) .
    No  The GSM is operating correctly at this time.
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