LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 2016 >> Fusion S >> Repair and Diagnosis >> External Pages >> Different car >> Section 1225 (Seating System - Pinpoint Test BA - Pinpoint Test CE) >> Pinpoint Test BV : Seat Latch Motor And Latch Switch Functional Test - RH Third Row Power Seat >> Pinpoint Test BV : Seat Latch Motor And Latch Switch Functional Test - RH Third Row Power Seat
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Pinpoint Test BV : Seat Latch Motor And Latch Switch Functional Test - RH Third Row Power Seat

WARNING: This page is about a different car, the 2015 Lincoln MKT. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: The following pinpoint test uses a test light to simulate normal circuit loads. Use only the test light recommended in the Special Tools table at the beginning of this article. To avoid connector terminal damage, use the Flex Probe Kit for the test light probe connection to the vehicle. Do not use the test light probe directly on any connector.
NOTE: Verify good battery condition before diagnosing the Power-Fold Seat Module (PFSM) system. Poor battery condition may interfere with PFSM operation. If battery voltage drops below 11 volts, seat movement will not start. If battery voltage drops below 8 volts, a started seat movement will stop.
NOTE: The accessory delay system (courtesy lamps) will time-out after 10 minutes and disable the third row power seat operation. Meter voltage measurements will be inaccurate when this occurs, which could lead to misdiagnosis  . To enable the accessory delay system during diagnosis and testing, close and open any vehicle door.

  1. BV1 CONFIRM THE SYSTEM FUNCTIONAL TEST HAS BEEN COMPLETED

    • Verify the System Functional Test - Third Row Power Seat has been completed before testing the latch assembly.

    Has the Functional Test been completed? 

    Yes  GO to  BV2.
    No  CARRY OUT the Functional Test - Third Row Power Seat. GO to Pinpoint Test BT  and return to this test only if directed to do so.

  2. BV2 CHECK FOR AUDIBLE SEAT LATCH OPERATION

    • Select the RH seat switch position and press the NORMAL or FOLD button.
    • Press the STOW button and observe and listen for latch motor operation.

    Does the latch motor operate or is audible? 

    Yes  GO to  BV7.
    No  GO to  BV3.

  3. BV3 CHECK THE PFSM FOR OUTPUT VOLTAGE TO THE SEAT LATCH MOTOR

    • Access the PFSM. If necessary, to release an inoperative latch or to reposition an inoperative power-stow motor, refer to the appropriate steps in Power-Fold Seat Module (PFSM) in this service information.
    • Verify the vehicle is in PARK and the liftgate is open.
    • Verify the courtesy lights are on. If needed, close and open any door on the vehicle.
    • Connect a test lamp between C4250A-4 , circuit CPSB9 (VT/BN) and C4250A-6 , circuit CPSA9 (VT/OG) by back-probing the connector.
    1. GFD95426Courtesy of FORD MOTOR COMPANY
    • Press the STOW button and monitor the test lamp.

    Does the test lamp illuminate momentarily when the STOW button is pressed? 

    Yes  GO to  BV4.
    No  GO to  BV5.

  4. BV4 CHECK THE SEAT LATCH MOTOR CIRCUITS FOR AN OPEN

    • Disconnect: PFSM C4250A.
    • Disconnect: RH Latch Motor C4244.
    • Measure the resistance between:
      • PFSM C4250A-4 , circuit CPSB9 (VT/BN), harness side and RH latch motor C4244-1 , circuit CPSB9 (VT/BN), harness side.
      • PFSM C4250A-6 , circuit CPSA9 (VT/OG), harness side and RH latch motor C4244-2 , circuit CPSA9 (VT/OG), harness side.
    1. GFD95427Courtesy of FORD MOTOR COMPANY

    Are the resistances less than 3 ohms? 

    Yes  INSTALL a new power seat latch. Refer to Seat Latch - Third Row, Power in this service information. TEST the system for normal operation.
    No  REPAIR the circuit(s). TEST the system for normal operation.

  5. BV5 CHECK THE SEAT LATCH MOTOR AND CIRCUIT FOR A SHORT TO GROUND

    • Disconnect: PFSM C4250A.
    • Measure the resistance between PFSM C4250A-4 , circuit CPSB9 (VT/BN), harness side and ground.
    1. GFD95428Courtesy of FORD MOTOR COMPANY

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  BV13.
    No  GO to  BV6.

  6. BV6 CHECK THE SEAT LATCH MOTOR CIRCUIT FOR A SHORT TO GROUND

    • Disconnect: RH Latch Motor C4244.
    • Measure the resistance between PFSM C4250A-4 , circuit CPSB9 (VT/BN), harness side and ground.
    1. GFD95428Courtesy of FORD MOTOR COMPANY

    Is the resistance greater than 10, 000 ohms? 

    Yes  INSTALL a new power seat latch. Refer to Seat Latch - Third Row, Power in this service information. TEST the system for normal operation.
    No  REPAIR the circuit. TEST the system for normal operation.

  7. BV7 CHECK THE SEAT LATCH SWITCH AND CIRCUITS FOR A SHORT TO GROUND

    • With the latch released, measure the resistance between PFSM C4250A-11 , circuit CPSC0 (BU/GY), harness side and ground.
    1. GFD95429Courtesy of FORD MOTOR COMPANY

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  BV9.
    No  GO to  BV8.

  8. BV8 CHECK THE SEAT LATCH SWITCH CIRCUITS FOR A SHORT TO GROUND OR SHORT TOGETHER

    • Disconnect: RH Latch Switch C4242.
    • Measure the resistance between:
      • PFSM C4250A-11 , circuit CPSC0 (BU/GY), harness side and ground.
      • PFSM C4250A-11 , circuit CPSC0 (BU/GY), harness side and PFSM C4250A-12 , circuit RPSB0 (BN/WH), harness side.
    1. GFD95430Courtesy of FORD MOTOR COMPANY

    Are the resistances greater then 10, 000 ohms? 

    Yes  INSTALL a new power seat latch. Refer to Seat Latch - Third Row, Power in this service information. TEST the system for normal operation.
    No  REPAIR the circuit(s). TEST the system for normal operation.

  9. BV9 CHECK THE SEAT LATCH SWITCH AND CIRCUITS FOR AN OPEN

    • Use a suitable tool and manually lock the latch.
    • With the latch locked, measure the resistance between PFSM C4250A-11 , circuit CPSC0 (BU/GY), harness side and PFSM C4250A-12 , circuit RPSB0 (BN/WH), harness side.
    1. GFD95431Courtesy of FORD MOTOR COMPANY

    Is the resistance less than 3 ohms? 

    Yes  GO to  BV11.
    No  GO to  BV10.

  10. BV10 CHECK THE SEAT LATCH SWITCH CIRCUITS FOR AN OPEN

    • Disconnect: RH Latch Switch C4242.
    • Measure the resistance between:
      • PFSM C4250A-11 , circuit CPSC0 (BU/GY), harness side and RH latch switch C4242-1 , circuit CPSC0 (BU/GY), harness side.
      • PFSM C4250A-12 , circuit RPSB0 (BN/WH), harness side and RH latch switch C4242-2 , circuit RPSB0 (BN/WH), harness side.
    1. GFD95432Courtesy of FORD MOTOR COMPANY

    Are the resistances less than 3 ohms? 

    Yes  INSTALL a new power seat latch. REFER to Seat Latch - Third Row, Power in this service information. TEST the system for normal operation.
    No  REPAIR the circuit(s). TEST the system for normal operation.

  11. BV11 CHECK THE SEAT LATCH SWITCH CIRCUIT FOR VOLTAGE AT THE PFSM

    • Connect: PFSM C4250A.
    • Verify the vehicle is in PARK and the liftgate is open.
    • Verify the courtesy lights are on. If needed, close and open any door on the vehicle.
    • Back-probe PFSM C4250A and measure the voltage between PFSM C4250A-11 , circuit CPSC0 (BU/GY), and PFSM C4250A-12 , circuit RPSB0 (BN/WH).
    1. GFD95433Courtesy of FORD MOTOR COMPANY
    • Press the STOW button to release the latch and measure the voltage.

    Is the voltage greater than 11 volts? 

    Yes  The latch assembly checks OK. GO to  BV12.
    No  GO to  BV13.

  12. BV12 IDENTIFY THE SEAT FUNCTION(S) USING THE TABLE AND DETERMINE THE DIAGNOSTIC DIRECTION

    • Reconnect all disconnected electrical connectors.
    • Operate the seat to each position (NORMAL, STOW, FOLD and TAILGATE) allowing the seat to complete each selection and note all resulting seat movements and seat positions obtained.
    • Compare the step results to the table and determine the diagnostic direction.
      Originating Seat Position Only Seat Position Obtained Components and Circuits to Check
      NORMAL FOLD Check the power-stow seat motor, stow sensor and circuits, GO to Pinpoint Test BX .
      NORMAL None (attempts power-stow seat motor movement but no power-fold seat motor [backrest] movement) Check the power-fold seat motor, fold sensor and circuits, GO to Pinpoint Test BZ .
      STOW FOLD Check the power-fold seat motor, fold sensor and circuits, GO to Pinpoint Test BZ .
      STOW None (power-fold seat motor [backrest] may attempt movement) Check the power-stow seat motor, stow sensor and circuits, GO to Pinpoint Test BX .
      FOLD NORMAL Check the power-stow seat motor, stow sensor and circuits, GO to Pinpoint Test BX .
      FOLD STOW Check the power-fold seat motor, fold sensor and circuits, GO to Pinpoint Test BZ .
      TAILGATE NORMAL Check the power-fold seat motor, fold sensor and circuits, GO to Pinpoint Test BZ .
      TAILGATE None (power-fold seat motor [backrest] attempts to operate, may require manual assistance) Check the power-stow seat motor, stow sensor and circuits, GO to Pinpoint Test BX .

    Does the seat operate correctly? 

    Yes  The fault is not present and cannot be recreated at this time.
    Do not install any new components at this time. Components should only be installed when directed to do so in the pinpoint test. 
    GO to  BV13.
    No  To check the power-stow seat motor, stow sensor and circuits, GO to Pinpoint Test BX . To check the power-fold seat motor (backrest), fold sensor and circuits, GO to Pinpoint Test BZ .

  13. BV13 CHECK PFSM CONNECTORS AND PINS FOR DAMAGE AND RETEST THE SYSTEM

    • Inspect the PFSM connectors for corrosion and pushed out or damaged pins and repair as necessary.
    • Reconnect all the PFSM connectors.
    • Operate the seats and determine if the concern is still present.

    Is the concern still present? 

    Yes  INSTALL a new PFSM. Refer to Power-Fold Seat Module (PFSM) in this service information. TEST the system for normal operation.
    No  The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
scientia non olet · About LEMON Manuals