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Pinpoint Test Ai : B272F

NOTE: When taking measurements at DCSM harness connectors, do not insert the electrical probes into the female connector pins. Inserting the probes into connector pins can cause intermittent or open electrical connections after reassembly resulting in DTCs and system failure. Touching the tip of these connector pins is recommended instead.

  1. AI1 CHECK THE TED BLOWER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

      WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment.

    • Ignition OFF.

    • Disconnect: Passenger Seat Side Air Bag C339 .
    • Disconnect: Passenger Cushion TED C3040 .
    • Disconnect: Passenger Backrest TED C3039 .
    • Ignition ON.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3265C-7
      GFD33595Courtesy of FORD MOTOR COMPANY
      		 Ground
      C3265C-8
      GFD33595Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the affected circuit. GO to  AI5.
    No  GO to  AI2.

  2. AI2 CHECK THE PASSENGER TED BLOWER MOTOR CIRCUITS FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3265C-8
      GFD33596Courtesy of FORD MOTOR COMPANY
      		 C3040-2
      C3265C-7
      GFD33596Courtesy of FORD MOTOR COMPANY
      		 C3040-4
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3265C-8
      GFD33596Courtesy of FORD MOTOR COMPANY
      		 C3039-2
      C3265C-7
      GFD33596Courtesy of FORD MOTOR COMPANY
      		 C3039-4

    Are the resistances less than 3 ohms? 

    Yes  GO to  AI3.
    No  REPAIR the affected circuit. GO to  AI5.

  3. AI3 CHECK THE RESISTANCE OF THE PASSENGER CUSHION AND BACKREST TED BLOWER MOTORS

      NOTE: The ohmmeter must be connected with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected can result in false readings and lead to incorrect identification of components that are not damaged.
    • Measure the component side  resistance:
      Positive Lead Measurement / Action Negative Lead
      Passenger Seat Cushion TED C3040-2, Component Side
      GFD33596Courtesy of FORD MOTOR COMPANY
      		 Passenger Seat Cushion TED C3040-4, Component Side
      Positive Lead Measurement / Action Negative Lead
      Passenger Seat Backrest TED C3039-2, Component Side
      GFD33596Courtesy of FORD MOTOR COMPANY
      		 Passenger Seat Backrest TED C3039-4, Component Side

    Are the resistances between 4, 000 ohms and 10, 000 ohms? 

    Yes  GO to  AI4.
    No  If the resistance of the cushion TED was not between 4, 000 ohms and 10, 000 ohms, INSTALL a new cushion TED. Refer to Seat Cushion Thermo-Electric Device (TED) . GO to  AI5. If the resistance of the backrest TED was not between 4, 000 ohms and 10, 000 ohms, INSTALL a new backrest TED. Refer to Seat Backrest Thermo-Electric Device (TED) . GO to  AI5.

  4. AI4 CHECK FOR CORRECT DCSM OPERATION

    • Ignition OFF.
    • Disconnect and inspect all DCSM connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins as necessary
      • pushed-out pins - install new pins as necessary
    • Reconnect the DCSM connectors. Make sure they seat and latch correctly.
    • Connect: Passenger Backrest TED C3039 .
    • Connect: Passenger Cushion TED C3040 .
    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    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 DCSM. Refer to Dual Climate Controlled Seat Module (DCSM) . GO to  AI5.
    No  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to  AI5.

  5. AI5 CHECK FOR SRS DTCs

      WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment.

    • Ignition OFF.

    • Connect: Passenger Seat Side Air Bag C339 .
    • Connect: DCSM C3265C (if previously disconnected).
    • Connect: Passenger Backrest TED C3039 (if previously disconnected).
    • Connect: Passenger Cushion TED C3040 (if previously disconnected).
    • Ignition ON.
    • Using a diagnostic scan tool, clear the RCM DTCs.
    • Cycle the ignition OFF then ON.
    • Using a diagnostic scan tool, perform RCM self-test.

    Are any RCM DTCs retrieved during self-test? 

    Yes  REFER to Supplemental Restraint System for pinpoint test direction.
    No  The repair is complete. RETURN the vehicle to the customer.
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