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Home › Ford › 2011 › Explorer Base, AWD, 6F55 › Repair and Diagnosis › Body & Frame › Seats › Seat System - Seating - 1ST Row › Diagnostic Routine(S) › Diagnostic Routine AF › Pinpoint Test

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) B2729 or B2730 retrieved in the self-test? 
      1. Yes:  For Diagnostic Trouble Code (DTC) B2729, REFER to DIAGNOSTIC ROUTINE AJ . For Diagnostic Trouble Code (DTC) B2730, REFER to DIAGNOSTIC ROUTINE AK .
      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 Thermo-Electric Device (TED) Temperature (PCSHTMP)
      • Passenger Back Thermo-Electric Device (TED) Temperature (PBKTMP)
      • Seat Cushion Thermo-Electric Device (TED) Temperature (CSHTEMP)
      • Seat Back Thermo-Electric Device (TED) 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 Identification (PID) values of the driver seat to those of the front passenger seat. This can help identify if there is a concern with the driver seat cushion or backrest Parameter Identification (PID) readings.
      • Are both driver seat Thermo-Electric Device (TED) temperature Parameter Identification (PID) values within 10 C (18 F) of the ambient temperature? 
      1. Yes:  GO to 3  on page 2.
      2. No:  If the driver seat cushion Parameter Identification (PID) value varies 10 C (18 F) or more from ambient temperature, GO to 16  on page 12.

        If the driver seat backrest Parameter Identification (PID) value 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.
    3. Set the driver 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 driver seat. If necessary, when the seat times out after 15 minutes, set the driver seat to high heat once again.
      • Do the driver 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 driver seat cushion Parameter Identification (PID) value is 60 C (108 F) hotter than the backrest Parameter Identification (PID) value, GO to 5  on page 3.

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

      2. No:  GO to 4  on page 3.
  4. CHECK THE Thermo-Electric Devices (TEDs) COOLING PERFORMANCE
    1. Check the Thermo-Electric Device (TED) cooling performance on the driver 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: Driver Seat Side Air Bag C3051.
    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 BACKREST 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 driver seat in the vehicle and connect the seat-to-floor connectors.
    5. Ignition ON.
    6. Measure:
      Fig 1: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427655Courtesy of FORD MOTOR CO.
      • Is any voltage present? 
      1. Yes:  REPAIR circuit(s) RHS01 (WH/VT) and CHS01 (GY/VT). GO to 36  on page 31.
      2. No:  GO to 7  on page 4.
  7. CHECK THE DRIVER 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
      G07427656Courtesy of FORD MOTOR CO.
      • Is the resistance greater than 10,000 ohms? 
      1. Yes:  GO to 8  on page 5.
      2. No:  REPAIR circuit(s) RHS01 (WH/VT) and CHS01 (GY/VT). GO to 36  on page 31.
  8. CHECK THE DRIVER BACKREST Thermo-Electric Device (TED) AND WIRING RESISTANCE
    1. Measure:
      Fig 3: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427657Courtesy 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 RESISTANCE OF THE BACKREST Thermo-Electric Device (TED)
    1. Disconnect: Driver Backrest Thermo-Electric Device (TED) C3034.
    2. Measure:
      Fig 4: Measuring Driver Backrest Thermo-Electric Device Connector Terminal Identification
      G07427658Courtesy of FORD MOTOR CO.
      • Is the resistance between 0.9 and 10 ohms? 
      1. Yes:  REPAIR the affected circuit(s). GO to 36  on page 31.
      2. No:  INSTALL a new 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
      G07427659Courtesy 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
      G07427660Courtesy 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
    1. Disconnect: Driver Backrest Thermo-Electric Device (TED) C3034.
      2. NOTE: Connect the ohmmeter with the positive lead to Dual Climate Controlled Seat Module (DCSM) C3265C-16, circuit CHS03 (GN/BN) and the negative lead to Dual Climate Controlled Seat Module (DCSM) C3265C-15, circuit RHS03 (GY/OG) 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
      G07427661Courtesy 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: Driver Cushion Thermo-Electric Device (TED) C3035.
      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 Driver Cushion Thermo-Electric Device Connector Terminal Identification
      G07427662Courtesy of FORD MOTOR CO.
    2. Measure:
      • Is the resistance between 4,000 ohms and 10,000 ohms? 
      1. Yes:  REPAIR circuit CHS03 (GN/BN) and RHS03 (GY/OG). GO to 36  on page 31.
      2. No:  INSTALL a new 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-11, circuit VHS18 (BN/GN), harness side and the negative lead to C3265C-15, circuit RHS03 (GY/OG), 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
      G07427663Courtesy 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: Driver Cushion Thermo-Electric Device (TED) C3035.
      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 10: Measuring Driver Cushion Thermo-Electric Device Connector Terminal Identification
      G07427664Courtesy of FORD MOTOR CO.
    2. Measure:
      • Is the resistance between 240,000 ohms and 420,000 ohms? 
      1. Yes:  REPAIR circuit VHS18 (BN/GN) and RHS03 (GY/OG). GO to 36  on page 31.
      2. No:  INSTALL a new 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: Driver Seat Side Air Bag C3051.
    3. Disconnect: Passenger Seat Side Air Bag C339.
    4. Disconnect: Dual Climate Controlled Seat Module (DCSM) C3265B.
    5. Disconnect: Driver Cushion Thermo-Electric Device (TED) C3035.
    6. Ignition ON.
    7. Measure:
      Fig 11: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427665Courtesy 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
      G07427666Courtesy of FORD MOTOR CO.
      • Is the resistance 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 AT THE Dual Climate Controlled Seat Module (DCSM)
    1. Connect: Driver Cushion Thermo-Electric Device (TED) C3035.
    2. Measure:
      Fig 13: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427667Courtesy 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: Driver Cushion Thermo-Electric Device (TED) C3035.
    2. Measure:
      Fig 14: Measuring Driver Cushion Thermo-Electric Device Connector Terminal Identification
      G07427668Courtesy 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 circuit VHS26 (VT) or RHS05 (YE/VT)/(YE/GN). GO to 36  on page 31.
      2. No:  INSTALL a new 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: Driver Seat Side Air Bag C3051.
    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 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. GO to 36  on page 31.
  21. CHECK THE DRIVER 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: Driver Seat Side Air Bag C3051.
    3. Disconnect: Passenger Seat Side Air Bag C339.
    4. Disconnect: Dual Climate Controlled Seat Module (DCSM) C3265A.
      5. NOTE: Do not connect the seat side air bag electrical connector at this time.
    5. Position the driver seat in the vehicle and connect the seat-to-floor connectors.
    6. Ignition ON.
    7. Measure:
      Fig 15: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427669Courtesy of FORD MOTOR CO.
      • Is any voltage present? 
      1. Yes:  REPAIR circuit(s) CHS02 (YE/BU) and RHS02 (BU/OG). GO to 36  on page 31.
      2. No:  GO to 22  on page 18.
  22. CHECK THE DRIVER 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
      G07427670Courtesy of FORD MOTOR CO.
      • Is the resistance greater than 10,000 ohms? 
      1. Yes:  GO to 23  on page 18.
      2. No:  REPAIR circuits CHS02 (YE/BU) and RHS02 (BU/OG). GO to 36  on page 31.
  23. CHECK THE DRIVER CUSHION Thermo-Electric Device (TED) AND WIRING RESISTANCE
    1. Measure:
      Fig 17: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427671Courtesy 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 DRIVER CUSHION Thermo-Electric Device (TED) RESISTANCE
    1. Disconnect: Driver Cushion Thermo-Electric Device (TED) C3035.
    2. Measure:
      Fig 18: Measuring Driver Cushion Thermo-Electric Device Connector Terminal Identification
      G07427672Courtesy of FORD MOTOR CO.
      • Is the resistance between 0.9 and 10 ohms? 
      1. Yes:  REPAIR the affected circuit(s). GO to 36  on page 31.
      2. No:  INSTALL a new 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
      G07427673Courtesy 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
      G07427674Courtesy 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
    1. Disconnect: Driver Cushion Thermo-Electric Device (TED) C3035.
      2. NOTE: Connect the ohmmeter with the positive lead to Dual Climate Controlled Seat Module (Dual Climate Controlled Seat Module (DCSM)) C3265C-16, circuit CHS03 (GN/BN) and the negative lead to Dual Climate Controlled Seat Module (DCSM) C3265C-15, circuit RHS03 (GY/OG) when measuring. Ohmmeter leads incorrectly connected can result in false readings and leads to incorrect identification of components that are not damaged.
      Fig 21: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427675Courtesy 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: Driver Backrest Thermo-Electric Device (TED) C3034.
      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 Driver Backrest Thermo-Electric Device Connector Terminal Identification
      G07427676Courtesy of FORD MOTOR CO.
    2. Measure:
      • Is the resistance between 4,000 ohms and 10,000 ohms? 
      1. Yes:  REPAIR circuits CHS03 (GN/BN) and RHS03 (GY/OG). GO to 36  on page 31.
      2. No:  INSTALL a new 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-12, circuit CHS09 (GY), harness side and the negative lead to C3265C-15, circuit RHS03 (GY/OG), 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 23: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427677Courtesy of FORD MOTOR CO.
    1. Measure:
      • 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: Driver Backrest Thermo-Electric Device (TED) C3034.
      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 Driver Backrest Thermo-Electric Device Connector Terminal Identification
      G07427678Courtesy of FORD MOTOR CO.
    2. Measure:
      • Is the resistance between 240,000 ohms and 420,000 ohms? 
      1. Yes:  REPAIR circuits CHS09 (GY)/VHS16 (BU/GN) and RHS03 (GY/OG). GO to 36  on page 31.
      2. No:  INSTALL a new 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: Driver Seat Side Air Bag C3051.
    3. Disconnect: Passenger Seat Side Air Bag C339.
    4. Disconnect: Dual Climate Controlled Seat Module (DCSM) C3265B.
    5. Disconnect: Driver Backrest Thermo-Electric Device (TED) C3034.
    6. Ignition ON.
    7. Measure:
      Fig 25: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427679Courtesy 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 Terminal Identification
      G07427680Courtesy of FORD MOTOR CO.
      • Is the resistance greater than 10,000 ohms? 
      1. Yes:  GO to 33  on page 28.
      2. No:  REPAIR the circuit. CLEAR the Diagnostic Trouble Codes (DTCs). GO to 36  on page 31.
  33. CHECK THE Thermo-Electric Device (TED) THERMISTOR AND WIRING RESISTANCE
    1. Connect: Driver Backrest Thermo-Electric Device (TED) C3034.
    2. Measure:
      Fig 27: Measuring Dual Climate Controlled Seat Module Connector Terminal Identification
      G07427681Courtesy 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: Driver Backrest Thermo-Electric Device (TED) C3034.
    2. Measure:
      Fig 28: Measuring Driver Backrest Thermo-Electric Device Connector Terminal Identification
      G07427682Courtesy 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 circuit CHS29 (WH/BU)/RHS15 (GY/BN). GO to 36  on page 31.
      2. No:  INSTALL a new 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: Driver Seat Backrest Thermo-Electric Device (TED) C3034 (if previously disconnected).
    6. Connect: Driver Seat Cushion Thermo-Electric Device (TED) C3035 (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: Driver Seat Side Air Bag C3051.
    3. Connect: Passenger Seat Side Air Bag C339.
    4. Connect: Dual Climate Controlled Seat Module (DCSM) C3265A, C3265B or C3265C (if previously disconnected).
    5. Connect: Driver Seat Backrest Thermo-Electric Device (TED) C3034 (if previously disconnected).
    6. Connect: Driver Seat Cushion Thermo-Electric Device (TED) C3035 (if previously disconnected).
    7. Ignition ON.
    8. Using a scan tool, clear the Restraints Control Module (RCM) Diagnostic Trouble Codes (DTCs).
    9. Cycle the ignition OFF then ON.
    10. 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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