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Home >> Ford >> 2020 >> Fusion Titanium Hybrid >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Automatic Transmission External Controls - 6-Speed Automatic Transmission - 6F35) >> Diagnosis And Testing >> External Controls >> Pinpoint Tests >> Pinpoint Test B : DTCS P07F2, P07F3, P07F4

Pinpoint Test B : DTCS P07F2, P07F3, P07F4

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

    Normal Operation and Fault Conditions 

    The GSM and the TRCM communicate on the HS-CAN but use a redundant PWM hard wired system as a backup. If the HS-CAN system fails the GSM and TRCM communicate via this hard wired system.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    GSM P07F2:00 Transmission Range Control Module Communication Circuit: No Sub Type Information The GSM detects a voltage signal out of calibrated range.
    GSM P07F3:00 Transmission Range Control Module Communication Circuit Low: No Sub Type Information The GSM detects a voltage low signal. Circuit shorted to ground.
    GSM P07F4:00 Transmission Range Control Module Communication Circuit High: No Sub Type Information The GSM detects a voltage high signal. Circuit open or shorted to power.

    Possible Sources 

    • Connectors damaged or pushed-out terminals, circuitry open, shorted to power or shorted to ground
    • BJB fuse 83 (20A)
    • BJB fuse 23 (15A)
    • TRCM

  2. B1 RETRIEVE AND RECORD ALL DTCS

    • Using the diagnostic scan tool, retrieve all DTCs.

    Are DTCs P0562, P0563, P07F5 present? 

    Yes  RESOLVE those DTCs first.
    No  GO to  B2

  3. B2 CHECK THE PWM (PULSE WIDTH MODULATION) 3 CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Disconnect GSM C3532.

    • Disconnect TRCM C1693.

    • Inspect the connectors for damaged or pushed-out terminals.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3532-17
      GFD483791Courtesy of FORD MOTOR COMPANY
      		 C1693-10

    Is the resistance less than 3 ohms? 

    Yes  GO to  B3
    No  REPAIR the circuit.

  4. B3 CHECK THE PWM (PULSE WIDTH MODULATION) 3 CIRCUIT FOR A SHORT TO GROUND

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1693-10
      GFD483791Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  B4
    No  REPAIR the circuit. If no circuit faults are found, INSTALL a new TRCM. REFER to: Transmission Range Control Module (TRCM) .

  5. B4 CHECK THE PWM (PULSE WIDTH MODULATION) 3 CIRCUIT FOR A SHORT TO POWER

    • Connect TRCM C1693.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3532-17
      GFD483790Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit. If no circuit faults are found, INSTALL a new TRCM. REFER to: Transmission Range Control Module (TRCM) .
    No  INSTALL a new GSM. REFER to: Gear Shift Module (GSM) .
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