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Pinpoint Test

NOTE: When taking measurements at Dual Climate Controlled Seat Module (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 Diagnostic Trouble Codes (DTCs) and system failure. Touching the tip of these connector pins is recommended instead.
  1. CHECK THE Dual Climate Controlled Seat Module (DCSM) FOR Diagnostic Trouble Codes (DTCs)
    1. Using a scan tool, perform Dual Climate Controlled Seat Module (DCSM) self-test.
      • Was Diagnostic Trouble Code (DTC) B272A or B272B retrieved in the self-test? 
      1. Yes:  For Diagnostic Trouble Code (DTC) B272A, REFER to DIAGNOSTIC ROUTINE AD . For Diagnostic Trouble Code (DTC) B272B, REFER to DIAGNOSTIC ROUTINE AE .
      2. No:  GO to 2  on page 2.
  2. MONITOR THE Dual Climate Controlled Seat Module (DCSM) Thermo-Electric Device (TED) TEMPERATURE Parameter Identifications (PIDs)
    1. Using a scan tool, view Dual Climate Controlled Seat Module (DCSM) Parameter Identifications (PIDs).
      • Passenger cushion thermal electric device (Thermo-Electric Device (TED)) temperature (PCSHTMP)
      • Passenger back Thermo-Electric Device (TED) temperature (PBKTMP)
      • Seat cushion thermal electric device temperature (CSHTEMP)
      • Seat back thermal electric device temperature (BK_TEMP)
      2. NOTE: Make sure the temperature of the climate controlled seats has stabilized before monitoring the Parameter Identifications (PIDs). Not allowing stabilization can cause incorrect readings and lead to incorrect identification of components that are not damaged.
    2. Monitor the Thermo-Electric Device (TED) temperature Parameter Identifications (PIDs) with the climate controlled seats off. Compare the Parameter Identifications (PIDs) of the front passenger seat to those of the driver seat, this can help identify if there is a concern with the front passenger seat cushion or backrest Parameter Identification (PID) readings.
      • Are both front passenger seat Thermo-Electric Device (TED) temperature Parameter Identifications (PIDs) within 10 C (18 F) of the ambient temperature? 
      1. Yes:  GO to 3  on page 2.
      2. No:  If the front passenger seat cushion Parameter Identification (PID) varies 10 C (18 F) or more from ambient temperature, GO to 16  on page 12.

        If the front passenger seat backrest Parameter Identification (PID) varies 10 C (18 F) or more from ambient temperature, GO to 31  on page 26.

  3. CONFIRM THE FAULT IS IN THE SEAT CUSHION OR THE BACKREST
    1. Ignition OFF.
    2. Start the engine.
      3. NOTE: A crushed seat cushion foam pad or climate controlled seat manifold may be the cause of the fault. It may be necessary to sit on the seat or place something of reasonable size and weight on the seat to recreate the fault.
      NOTE: If the seat shuts down before a 15 minute heat cycle has timed out, carry out the Dual Climate Controlled Seat Module (DCSM) self-test and go to the DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) DIAGNOSTIC TROUBLE CODE (DTC) CHART  to continue diagnostics.
    3. Set the passenger seat to high heat. Allow the seat to heat for at least 15 minutes while monitoring the Thermo-Electric Device (TED) temperature Parameter Identifications (PIDs) of the passenger seat. If necessary, when the seat times out after 15 minutes, set the passenger seat to high heat once again.
      • Do the passenger seat cushion Thermo-Electric Device (TED) and backrest Thermo-Electric Device (TED) Parameter Identifications (PIDs) vary more than 60 C (108 F) from each other? 
      1. Yes:  If the front passenger seat cushion Parameter Identification (PID) is 60 C (108 F) hotter than the backrest Parameter Identification (PID), GO to 5  on page 3.

        If the front passenger seat backrest Parameter Identification (PID) is 60 C (108 F) hotter than the cushion Parameter Identification (PID), GO to 20  on page 17.

      2. No:  GO to 4  on page 3.
  4. CHECK THE Thermo-Electric Device (TED) COOLING PERFORMANCE
    1. Check the Thermo-Electric Devices (TEDs) cooling performance on the passenger seat. REFER to THERMO-ELECTRIC DEVICE (TED) COOLING PERFORMANCE .
      • Did the Thermo-Electric Devices (TEDs) pass the component test? 
      1. Yes:  The Diagnostic Trouble Code (DTC) may have been set by extreme cabin temperatures or excessive sun load on the seat causing the system to enter recovery mode. Occupant size and weight characteristics can also be a factor. If a concern cannot be found or duplicated, RETURN the vehicle to the customer.
      2. No:  CHECK the affected seat cushion or backrest for correct installation of the climate controlled seat components (Thermo-Electric Device (TED), manifold, air ducts and foam pad). CHECK for air flow restrictions (Thermo-Electric Device (TED) inlets and outlets, Thermo-Electric Device (TED)-to-manifold connections, filters and ducts) and REPAIR as needed. CHECK for an intermittent wiring fault. REPAIR as needed.
  5. CHECK THE Thermo-Electric Device (TED) INSTALLATION AND FOR A CRUSHED SEAT CUSHION
      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.
    1. Ignition OFF.
    2. Disconnect: Passenger Seat Side Air Bag C339.
    3. Remove the seat. REFER to SEAT .
    4. Remove the seat cushion cover. REFER to SEAT CUSHION COVER .
    5. Inspect the seat cushion:
      • Is the cushion blower obstructed?
      • Is the blower filter restricted or plugged?
      • Is the Thermo-Electric Device (TED) correctly installed?
      • Is the seat cushion foam pad crushed or restricted?
      • Is the climate controlled seat manifold crushed or restricted?
      • Is the Thermo-Electric Device (TED) correctly installed and are the foam pad and manifold free of any damage? 
      1. Yes:  GO to 6  on page 3.
      2. No:  Correctly INSTALL the cushion Thermo-Electric Device (TED) or INSTALL a new seat cushion foam pad and/or climate controlled seat manifold. GO to 36  on page 31.
  6. CHECK THE PASSENGER BACKREST Thermo-Electric Device (TED)- CIRCUIT FOR A SHORT TO VOLTAGE
    1. Ignition OFF.
    2. Disconnect: Dual Climate Controlled Seat Module (DCSM) C3265A.
      3. NOTE: Do not connect the seat side air bag electrical connector at this time.
    3. Position the front passenger seat in the vehicle and connect the seat-to-floor connectors.
    4. Ignition ON.
    5. Measure:
      Fig 1: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427683Courtesy of FORD MOTOR CO.
      • Is any voltage present? 
      1. Yes:  REPAIR circuits RHS06 (WH) and CHS06 (BU/BN)/CHS01 (GY/VT). GO to 36  on page 31.
      2. No:  GO to 7  on page 4.
  7. CHECK THE PASSENGER BACKREST Thermo-Electric Device (TED) CIRCUIT FOR A SHORT TO GROUND
    1. Ignition OFF.
    2. Measure:
      Fig 2: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427684Courtesy of FORD MOTOR CO.
      • Is the resistance greater than 10,000 ohms? 
      1. Yes:  GO to 8  on page 5.
      2. No:  REPAIR circuits RHS06 (WH) and CHS06 (BU/BN)/CHS01 (GY/VT). GO to 36  on page 31.
  8. CHECK THE PASSENGER BACKREST Thermo-Electric Device (TED) AND WIRING RESISTANCE
    1. Measure:
      Fig 3: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427685Courtesy of FORD MOTOR CO.
      • Is the resistance between 0.9 and 10 ohms? 
      1. Yes:  GO to 10  on page 7.
      2. No:  GO to 9  on page 6.
  9. CHECK THE PASSENGER BACKREST Thermo-Electric Device (TED) RESISTANCE
    1. Disconnect: Passenger Backrest Thermo-Electric Device (TED) C3039.
    2. Measure:
      Fig 4: Measuring Passenger Backrest Thermo-Electric Device Connector Terminal Identification
      G07427686Courtesy of FORD MOTOR CO.
      • Is the resistance between 0.9 and 10 ohms? 
      1. Yes:  REPAIR the circuit. GO to 36  on page 31.
      2. No:  INSTALL a new seat backrest Thermo-Electric Device (TED). REFER to SEAT BACKREST THERMO-ELECTRIC DEVICE (TED) . GO to 36  on page 31.
  10. CHECK THE BLOWER AND SPEED CONTROL CIRCUITS FOR A SHORT TO VOLTAGE
    1. Disconnect: Dual Climate Controlled Seat Module (DCSM) C3265C.
    2. Ignition ON.
    3. Measure:
      Fig 5: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427687Courtesy of FORD MOTOR CO.
      • Is any voltage present? 
      1. Yes:  REPAIR the affected circuit. GO to 36  on page 31.
      2. No:  GO to 11  on page 7.
  11. CHECK THE BLOWER AND SPEED CONTROL CIRCUITS FOR A SHORT TO GROUND
    1. Ignition OFF.
    2. Measure:
      Fig 6: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427688Courtesy of FORD MOTOR CO.
      • Are the resistances greater than 10,000 ohms? 
      1. Yes:  GO to 12  on page 8.
      2. No:  REPAIR the affected circuit. GO to 36  on page 31.
  12. CHECK THE BLOWER AND WIRING RESISTANCE
    1. Disconnect: Passenger Backrest Thermo-Electric Device (TED) C3039.
      2. NOTE: Connect the ohmmeter with the positive lead to Dual Climate Controlled Seat Module (DCSM) C3265C-8, circuit CHS08 (BN/YE) and the negative lead to Dual Climate Controlled Seat Module (DCSM) C3265C-7, circuit RHS08 (VT/WH) when measuring. Ohmmeter leads incorrectly connected can result in false readings and incorrect identification of components that are not damaged.
      Fig 7: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427689Courtesy of FORD MOTOR CO.
    2. Measure:
      • Is the resistance between 4,000 ohms and 10,000 ohms? 
      1. Yes:  GO to 14  on page 10.
      2. No:  GO to 13  on page 9.
  13. CHECK THE BLOWER RESISTANCE
    1. Disconnect: Passenger Cushion Thermo-Electric Device (TED) C3040.
      2. NOTE: Connect the ohmmeter 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.
      Fig 8: Measuring Passenger Cushion Thermo-Electric Device Connector Terminal Identification
      G07427690Courtesy of FORD MOTOR CO.
    2. Measure:
      • Is the resistance between 4,000 ohms and 10,000 ohms? 
      1. Yes:  REPAIR circuits CHS08 (BN/YE) and VHS23 (BN/BU). GO to 36  on page 31.
      2. No:  INSTALL a new seat cushion Thermo-Electric Device (TED). REFER to SEAT CUSHION THERMO-ELECTRIC DEVICE (TED) . GO to 36  on page 31.
  14. CHECK THE BLOWER SPEED CONTROL AND CIRCUIT RESISTANCE
      NOTE: Connect the ohmmeter with the positive lead to C3265C-3, circuit VHS23 (BN/BU), harness side and the negative lead to C3265C-7, circuit RHS08 (VT/WH), harness side when measuring. Ohmmeter leads incorrectly connected can result in false readings and leads to incorrect identification of components that are not damaged.
      Fig 9: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427691Courtesy of FORD MOTOR CO.
    1. Measure:
      • Is the resistance between 240,000 ohms and 420,000 ohms? 
      1. Yes:  GO to 16  on page 12.
      2. No:  GO to 15  on page 11.
  15. CHECK THE BLOWER SPEED CONTROL RESISTANCE
    1. Disconnect: Passenger Cushion Thermo-Electric Device (TED) C3040.
      2. NOTE: The ohmmeter must be connected with the positive lead to pin 7 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.
      Fig 10: Measuring Passenger Cushion Thermo-Electric Device Connector Terminal Identification
      G07427692Courtesy of FORD MOTOR CO.
    2. Measure:
      • Is the resistance between 240,000 ohms and 420,000 ohms? 
      1. Yes:  REPAIR circuits VHS23 (BN/BU) and RHS08 (VT/WH). GO to 36  on page 31.
      2. No:  INSTALL a new seat cushion Thermo-Electric Device (TED). REFER to SEAT CUSHION THERMO-ELECTRIC DEVICE (TED) . GO to 36  on page 31.
  16. CHECK THERMISTOR CIRCUIT 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.
    1. Ignition OFF.
    2. Disconnect: Passenger Seat Side Air Bag C339.
    3. Disconnect: Dual Climate Controlled Seat Module (DCSM) C3265B.
    4. Disconnect: Passenger Cushion Thermo-Electric Device (TED) C3040.
    5. Ignition ON.
    6. Measure:
      Fig 11: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427693Courtesy of FORD MOTOR CO.
      • Is any voltage present? 
      1. Yes:  REPAIR the affected circuit. GO to 36  on page 31.
      2. No:  GO to 17  on page 13.
  17. CHECK THERMISTOR CIRCUIT FOR A SHORT TO GROUND
    1. Ignition OFF.
    2. Measure:
      Fig 12: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427694Courtesy of FORD MOTOR CO.
      • Are the resistances greater than 10,000 ohms? 
      1. Yes:  GO to 18  on page 14.
      2. No:  REPAIR the affected circuit. GO to 36  on page 31.
  18. CHECK THE Thermo-Electric Device (TED) THERMISTOR AND WIRING RESISTANCE
    1. Measure:
      Fig 13: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427695Courtesy of FORD MOTOR CO.
      AMBIENT TEMPERATURE AND RESISTANCE REFERENCE CHART

      Ambient Temperature Resistance
      0 C (32 F) to 10 C (50 F) 2,782 to 1,663 ohms
      10 C (50 F) to 20 C (68 F) 1,837 to 1,140 ohms
      20 C (68 F) to 30 C (86 F) 1,250 to 806 ohms
      30 C (86 F) to 40 C (103.9 F) 893 to 570 ohms
      40 C (103.9 F) to 50 C (121.9 F) 630 to 428 ohms
      • Is the resistance within the limits indicated? 
      1. Yes:  GO to 35  on page 31.
      2. No:  GO to 19  on page 15.
  19. CHECK THE THERMISTOR
    1. Disconnect: Passenger Cushion Thermo-Electric Device (TED) C3040.
    2. Measure:
      Fig 14: Measuring Passenger Cushion Thermo-Electric Device Connector Terminal Identification
      G07427696Courtesy of FORD MOTOR CO.
      AMBIENT TEMPERATURE AND RESISTANCE REFERENCE CHART

      Ambient Temperature Resistance
      0 C (32 F) to 10 C (50 F) 2,782 to 1,663 ohms
      10 C (50 F) to 20 C (68 F) 1,837 to 1,140 ohms
      20 C (68 F) to 30 C (86 F) 1,250 to 806 ohms
      30 C (86 F) to 40 C (103.9 F) 893 to 570 ohms
      40 C (103.9 F) to 50 C (121.9 F) 630 to 428 ohms
      • Is the resistance within the limits indicated? 
      1. Yes:  REPAIR circuits VHS27 (WH/OG) and RHS10 (BU/OG). GO to 36  on page 31.
      2. No:  INSTALL a new seat cushion Thermo-Electric Device (TED). REFER to SEAT CUSHION THERMO-ELECTRIC DEVICE (TED) . GO to 36  on page 31.
  20. CHECK THE Thermo-Electric Device (TED) INSTALLATION AND FOR A CRUSHED SEAT BACKREST
      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.
    1. Ignition OFF.
    2. Disconnect: Passenger Seat Side Air Bag C339.
    3. Remove the seat. REFER to SEAT .
    4. Remove the seat backrest cover. REFER to SEAT BACKREST COVER .
    5. Inspect the seat backrest:
      • Is the backrest blower obstructed?
      • Is the blower filter restricted or plugged?
      • Is the Thermo-Electric Device (TED) correctly installed?
      • Is the seat backrest foam pad crushed or restricted?
      • Is the climate controlled seat manifold crushed or restricted?
      • Is the Thermo-Electric Device (TED) correctly installed and are the foam pad and manifold free of any damage? 
      1. Yes:  GO to 21  on page 17.
      2. No:  Correctly INSTALL the backrest Thermo-Electric Device (TED) or INSTALL a new seat backrest foam pad and/or climate controlled seat manifold. CONNECT the battery ground cable. GO to 36  on page 31.
  21. CHECK THE PASSENGER CUSHION Thermo-Electric Device (TED) CIRCUIT 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.
    1. Ignition OFF.
    2. Disconnect: Passenger Seat Side Air Bag C339.
    3. Disconnect: Dual Climate Controlled Seat Module (DCSM) C3265A.
      4. NOTE: Do not connect the seat side air bag electrical connector at this time.
    4. Position the front passenger seat in the vehicle and connect the seat-to-floor connectors.
    5. Ignition ON.
    6. Measure:
      Fig 15: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427697Courtesy of FORD MOTOR CO.
      • Is any voltage present? 
      1. Yes:  REPAIR circuits CHS07 (GY/BU) and RHS07 (BU). GO to 36  on page 31.
      2. No:  GO to 22  on page 18.
  22. CHECK THE PASSENGER CUSHION Thermo-Electric Device (TED) CIRCUIT FOR A SHORT TO GROUND
    1. Ignition OFF.
    2. Measure:
      Fig 16: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427698Courtesy of FORD MOTOR CO.
      • Is the resistance greater than 10,000 ohms? 
      1. Yes:  GO to 23  on page 18.
      2. No:  REPAIR circuits CHS07 (GY/BU) and RHS07 (BU). GO to 36  on page 31.
  23. CHECK THE PASSENGER CUSHION Thermo-Electric Device (TED) AND WIRING RESISTANCE
    1. Measure:
      Fig 17: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427699Courtesy of FORD MOTOR CO.
      • Is the resistance between 0.9 and 10 ohms? 
      1. Yes:  GO to 25  on page 20.
      2. No:  GO to 24  on page 19.
  24. CHECK THE PASSENGER CUSHION Thermo-Electric Device (TED) RESISTANCE
    1. Disconnect: Passenger Cushion Thermo-Electric Device (TED) C3040.
    2. Measure:
      Fig 18: Measuring Passenger Cushion Thermo-Electric Device Connector Terminal Identification
      G07427700Courtesy of FORD MOTOR CO.
      • Is the resistance between 0.9 and 10 ohms? 
      1. Yes:  REPAIR the affected circuit. GO to 36  on page 31.
      2. No:  INSTALL a new seat cushion Thermo-Electric Device (TED). REFER to SEAT CUSHION THERMO-ELECTRIC DEVICE (TED) . GO to 36  on page 31.
  25. CHECK THE BLOWER AND SPEED CONTROL CIRCUITS FOR A SHORT TO VOLTAGE
    1. Disconnect: Dual Climate Controlled Seat Module (DCSM) C3265C.
    2. Ignition ON.
    3. Measure:
      Fig 19: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427701Courtesy of FORD MOTOR CO.
      • Is any voltage present? 
      1. Yes:  REPAIR the affected circuit. GO to 36  on page 31.
      2. No:  GO to 26  on page 21.
  26. CHECK THE BLOWER AND SPEED CONTROL CIRCUITS FOR A SHORT TO GROUND
    1. Ignition OFF.
    2. Measure:
      Fig 20: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427702Courtesy of FORD MOTOR CO.
      • Are the resistances greater than 10,000 ohms? 
      1. Yes:  GO to 27  on page 22.
      2. No:  REPAIR the affected circuit. GO to 36  on page 31.
  27. CHECK THE BLOWER AND WIRING RESISTANCE
    1. Disconnect: Passenger Cushion Thermo-Electric Device (TED) C3040.
      2. NOTE: Connect the ohmmeter with the positive lead to Dual Climate Controlled Seat Module (DCSM) C3265C-8, circuit CHS08 (BN/YE) and the negative lead to Dual Climate Controlled Seat Module (DCSM) C3265C-7, circuit RHS08 (VT/WH) when measuring. Ohmmeter leads incorrectly connected can result in false readings and lead to incorrect identification of components that are not damaged.
      Fig 21: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427703Courtesy of FORD MOTOR CO.
    2. Measure:
      • Is the resistance between 4,000 ohms and 10,000 ohms? 
      1. Yes:  GO to 29  on page 24.
      2. No:  GO to 28  on page 23.
  28. CHECK THE BLOWER RESISTANCE
    1. Disconnect: Passenger Backrest Thermo-Electric Device (TED) C3039.
      2. NOTE: Connect the ohmmeter 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.
      Fig 22: Measuring Passenger Backrest Thermo-Electric Device Connector Terminal Identification
      G07427704Courtesy of FORD MOTOR CO.
    2. Measure:
      • Is the resistance between 4,000 ohms and 10,000 ohms? 
      1. Yes:  REPAIR circuits CHS08 (BN/YE) and RHS08 (VT/WH). GO to 36  on page 31.
      2. No:  INSTALL a new seat backrest Thermo-Electric Device (TED). REFER to SEAT BACKREST THERMO-ELECTRIC DEVICE (TED) . GO to 36  on page 31.
  29. CHECK THE BLOWER SPEED CONTROL AND CIRCUIT RESISTANCE
      NOTE: Connect the ohmmeter with the positive lead to C3265C-4, circuit VHS21 (BU/WH), harness side and the negative lead to C3265C-7, circuit RHS08 (VT/WH), harness side when measuring. Ohmmeter leads incorrectly connected can result in false readings and lead to incorrect identification of components that are not damaged.
      Fig 23: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427705Courtesy of FORD MOTOR CO.
    1. Measure the resistance between Dual Climate Controlled Seat Module (DCSM) C3265C-4, circuit VHS21 (BU/WH), harness side and Dual Climate Controlled Seat Module (DCSM) C3265C-7, circuit RHS08 (VT/WH), harness side.
      • Is the resistance between 240,000 ohms and 420,000 ohms? 
      1. Yes:  GO to 31  on page 26.
      2. No:  GO to 30  on page 25.
  30. CHECK THE BLOWER SPEED CONTROL RESISTANCE
    1. Disconnect: Passenger Backrest Thermo-Electric Device (TED) C3039.
      2. NOTE: Connect the ohmmeter with the positive lead to pin 7 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.
      Fig 24: Measuring Passenger Backrest Thermo-Electric Device Connector Terminal Identification
      G07427706Courtesy of FORD MOTOR CO.
    2. Measure:
      • Is the resistance between 240,000 ohms and 420,000 ohms? 
      1. Yes:  REPAIR circuits VHS21 (BU/WH) and RHS08 (VT/WH). GO to 36  on page 31.
      2. No:  INSTALL a new seat backrest Thermo-Electric Device (TED). REFER to SEAT BACKREST THERMO-ELECTRIC DEVICE (TED) . GO to 36  on page 31.
  31. CHECK THERMISTOR CIRCUIT 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.
    1. Ignition OFF.
    2. Disconnect: Passenger Seat Side Air Bag C339.
    3. Disconnect: Dual Climate Controlled Seat Module (DCSM) C3265B.
    4. Disconnect: Passenger Backrest Thermo-Electric Device (TED) C3039.
    5. Ignition ON.
    6. Measure:
      Fig 25: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427707Courtesy of FORD MOTOR CO.
      • Is any voltage present? 
      1. Yes:  REPAIR the affected circuit. GO to 36  on page 31.
      2. No:  GO to 32  on page 27.
  32. CHECK THERMISTOR CIRCUIT FOR A SHORT TO GROUND
    1. Ignition OFF.
    2. Measure:
      Fig 26: Measuring Dual Climate Controlled Seat Module Connector Reference Chart
      G07427708Courtesy of FORD MOTOR CO.
      • Is the resistance greater than 10,000 ohms? 
      1. Yes:  GO to 33  on page 28.
      2. No:  REPAIR the affected circuit. GO to 36  on page 31.
  33. CHECK THE Thermo-Electric Device (TED) THERMISTOR AND WIRING RESISTANCE
    1. Connect: Passenger Backrest Thermo-Electric Device (TED) C3039.
    2. Measure:
      Fig 27: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427709Courtesy of FORD MOTOR CO.
      AMBIENT TEMPERATURE AND RESISTANCE REFERENCE CHART

      Ambient Temperature Resistance
      0 C (32 F) to 10 C (50 F) 2,782 to 1,663 ohms
      10 C (50 F) to 20 C (68 F) 1,837 to 1,140 ohms
      20 C (68 F) to 30 C (86 F) 1,250 to 806 ohms
      30 C (86 F) to 40 C (103.9 F) 893 to 570 ohms
      40 C (103.9 F) to 50 C (121.9 F) 630 to 428 ohms
      • Is the resistance within the limits indicated? 
      1. Yes:  GO to 35  on page 31.
      2. No:  GO to 34  on page 29.
  34. CHECK THE Thermo-Electric Device (TED) THERMISTOR RESISTANCE
    1. Disconnect: Passenger Backrest Thermo-Electric Device (TED) C3039.
    2. Measure:
      Fig 28: Measuring Passenger Backrest Thermo-Electric Device Connector Terminal Identification
      G07427710Courtesy of FORD MOTOR CO.
      AMBIENT TEMPERATURE AND RESISTANCE REFERENCE CHART

      Ambient Temperature Resistance
      0 C (32 F) to 10 C (50 F) 2,782 to 1,663 ohms
      10 C (50 F) to 20 C (68 F) 1,837 to 1,140 ohms
      20 C (68 F) to 30 C (86 F) 1,250 to 806 ohms
      30 C (86 F) to 40 C (103.9 F) 893 to 570 ohms
      40 C (103.9 F) to 50 C (121.9 F) 630 to 428 ohms
      • Is the resistance within the limits indicated? 
      1. Yes:  REPAIR circuits VHS36 (YE/BU) and RHS20 (GN/BU). GO to 36  on page 31.
      2. No:  INSTALL a new seat backrest Thermo-Electric Device (TED). REFER to SEAT BACKREST THERMO-ELECTRIC DEVICE (TED) . GO to 36  on page 31.
  35. CHECK FOR CORRECT Dual Climate Controlled Seat Module (DCSM) OPERATION
    1. Ignition OFF.
    2. Disconnect and inspect all Dual Climate Controlled Seat Module (DCSM) connectors.
    3. 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
    4. Reconnect the Dual Climate Controlled Seat Module (DCSM) connectors. Make sure they seat and latch correctly.
    5. Connect: Passenger Seat Backrest Thermo-Electric Device (TED) C3039 (if previously disconnected).
    6. Connect: Passenger Seat Cushion Thermo-Electric Device (TED) C3040 (if previously disconnected).
    7. Operate the system and determine if the concern is still present.
      • Is the concern still present? 
      1. Yes:  CHECK On-Line Automotive Service Information System (OASIS) for any applicable Technical Service Bulletins (TSBs). If a Technical Service Bulletin (TSB) exists for this concern, DISCONTINUE this test and FOLLOW Technical Service Bulletin (TSB) instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new Dual Climate Controlled Seat Module (DCSM). REFER to DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) . GO to 36  on page 31.
      2. 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 36  on page 31.
  36. CHECK FOR Supplemental Restraint System (SRS) Diagnostic Trouble Codes (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.
    1. Ignition OFF.
    2. Connect: Passenger Seat Side Air Bag C339.
    3. Connect: Dual Climate Controlled Seat Module (DCSM) C3265A, C3265B or C3265C (if previously disconnected).
    4. Connect: Passenger Seat Backrest Thermo-Electric Device (TED) C3039 (if previously disconnected).
    5. Connect: Passenger Seat Cushion Thermo-Electric Device (TED) C3040 (if previously disconnected).
    6. Ignition ON.
    7. Using a scan tool, clear the Restraints Control Module (RCM) Diagnostic Trouble Codes (DTCs).
    8. Cycle the ignition OFF then ON.
    9. Using a scan tool, perform Restraints Control Module (RCM) self-test.
      • Are any Restraints Control Module (RCM) Diagnostic Trouble Codes (DTCs) retrieved during self-test? 
      1. Yes:  REFER to DTC CHART: RESTRAINT CONTROL MODULE (RCM) for pinpoint test direction.
      2. No:  The repair is complete. RETURN the vehicle to the customer.
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