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Pinpoint Test Ab : DTC B103B/B1111

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: When taking measurements at Front Seat Climate Control Module (SCME) 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.
NOTE: The airbag warning indicator illuminates when the correct RCM fuse is removed and the ignition is ON.
NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

  1. AB1 CHECK THE TED CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.
    • Disconnect: Driver Seat Side Airbag C3051 and Passenger Seat Side Airbag C3052.
    • Disconnect: Front Seat Climate Control Module (SCME) C3265A.
    • WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.

      Connect the battery ground cable. Refer to Battery, Mounting and Cables .

    • Measure the resistance between the following Front Seat Climate Control Module (SCME) C3265A pins, harness side and ground.
      Connector Circuit
      C3265A-G CHS02 (YE/BU)
      C3265A-H RHS02 (BU/OG)
      C3265A-J CHS01 (GY/VT)
      C3265A-K RHS01 (WH/VT)
    1. GFD137429Courtesy of FORD MOTOR COMPANY

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  AB2.
    No  If the resistances of C3265A-G , circuit CHS02 (YE/BU) and/or C3265A-H , circuit RHS02 (BU/OG) to ground were not  greater than 10, 000 ohms to ground, GO to AB6  . If resistances of C3265A-J , circuit CHS01 (GY/VT) and/or C3265A-K , circuit RHS01 (WH/VT) to ground were not  greater than 10, 000 ohms to ground, GO to AB7  .

  2. AB2 CHECK THE TED CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition ON.
    • Measure the voltage between the following Front Seat Climate Control Module (SCME) C3265A pins, harness side and ground.
      Connector Circuit
      C3265A-G CHS02 (YE/BU)
      C3265A-H RHS02 (BU/OG)
      C3265A-J CHS01 (GY/VT)
      C3265A-K RHS01 (WH/VT)
    1. GFD137430Courtesy of FORD MOTOR COMPANY

    Is voltage present on any circuit? 

    Yes  If voltage is measured at C3265A-G and/or C3265A-H , GO to  AB8.If voltage is measured at C3265A-J and/or C3265A-K , GO to  AB9.
    No  GO to  AB3.

  3. AB3 CHECK THE TED RESISTANCE

    • Ignition OFF.
    • NOTE: Make sure the TEDs are at room temperature and there is no air blowing across the TEDs. Do not handle a TED when measuring resistance. These conditions can cause incorrect readings and lead to incorrect identification of components that are not faulty.

      Measure the resistance between:

      • Front Seat Climate Control Module (SCME) C3265A-G , circuit CHS02 (YE/BU), harness side and Front Seat Climate Control Module (SCME) C3265A-H , circuit RHS02 (BU/OG), harness side.
      • Front Seat Climate Control Module (SCME) C3265A-J , circuit CHS01 (GY/VT), harness side and C3265A-K , circuit RHS01 (WH/VT), harness side.
    1. GFD137431Courtesy of FORD MOTOR COMPANY

    Are the resistances between 0.9 and 10 ohms? 

    Yes  INSTALL a new Front Seat Climate Control Module (SCME). REFER to Dual Climate Controlled Seat Module (DCSM) . CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT driver seat side airbag C3051 and passenger seat side airbag C3052. REPOWER the SRS. REFER to Supplemental Restraint System .
    No  If the resistance between Front Seat Climate Control Module (SCME) C3265A-G and C3265A-H was not  between 0.9 and 10 ohms, GO to AB5  . If the resistance between Front Seat Climate Control Module (SCME) C3265A-J and C3265A-K was not  between 0.9 and 10 ohms, GO to AB4  .

  4. AB4 CHECK RESISTANCE OF THE BACKREST TED

    • Disconnect: Driver Seat Backrest TED C3034.
    • Measure the resistance between driver seat backrest TED C3034 pin 1 and pin 3, component side.
    1. GFD137432Courtesy of FORD MOTOR COMPANY

    Is the resistance between 0.9 and 10 ohms? 

    Yes  REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT driver seat side airbag C3051 and passenger seat side airbag C3052. REPOWER the SRS. REFER to Supplemental Restraint System .
    No  INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device . CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT driver seat side airbag C3051 and passenger seat side airbag C3052. REPOWER the SRS. REFER to Supplemental Restraint System .

  5. AB5 CHECK RESISTANCE OF THE CUSHION TED

    • Disconnect: Driver Seat Cushion TED C3035.
    • Measure the resistance between driver seat cushion TED C3035 pin 1 and pin 3, component side.
    1. GFD137433Courtesy of FORD MOTOR COMPANY

    Is the resistance between 0.9 and 10 ohms? 

    Yes  REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT driver seat side airbag C3051 and passenger seat side airbag C3052. REPOWER the SRS. REFER to Supplemental Restraint System .
    No  INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device . CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT driver seat side airbag C3051 and passenger seat side airbag C3052. REPOWER the SRS. REFER to Supplemental Restraint System .

  6. AB6 CHECK THE CUSHION TED CIRCUITS FOR A SHORT TO GROUND

    • Disconnect: Driver Seat Cushion TED C3035.
    • Measure the resistance between:
      • Front Seat Climate Control Module (SCME) C3265A-G , circuit CHS02 (YE/BU), harness side and ground.
      • Front Seat Climate Control Module (SCME) C3265A-H , circuit RHS02 (BU/OG), harness side and ground.
    1. GFD137434Courtesy of FORD MOTOR COMPANY

    Are the resistances greater than 10, 000 ohms? 

    Yes  INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device . CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT driver seat side airbag C3051 and passenger seat side airbag C3052. REPOWER the SRS. REFER to Supplemental Restraint System .
    No  REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT driver seat side airbag C3051 and passenger seat side airbag C3052. REPOWER the SRS. REFER to Supplemental Restraint System .

  7. AB7 CHECK THE BACKREST TED CIRCUITS FOR A SHORT TO GROUND

    • Disconnect: Driver Seat Backrest TED C3034.
    • Measure the resistance between:
      • Front Seat Climate Control Module (SCME) C3265A-J , circuit CHS01 (GY/VT), harness side and ground.
      • Front Seat Climate Control Module (SCME) C3265A-K , circuit RHS01 (WH/VT), harness side and ground.
    1. GFD137435Courtesy of FORD MOTOR COMPANY

    Are the resistances greater than 10, 000 ohms? 

    Yes  INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device . CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT driver seat side airbag C3051 and passenger seat side airbag C3052. REPOWER the SRS. REFER to Supplemental Restraint System .
    No  REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT driver seat side airbag C3051 and passenger seat side airbag C3052. REPOWER the SRS. REFER to Supplemental Restraint System .

  8. AB8 CHECK THE CUSHION TED CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.
    • Disconnect: Driver Seat Cushion TED C3035.
    • Ignition ON.
    • Measure the voltage between:
      • Front Seat Climate Control Module (SCME) C3265A-G , circuit CHS02 (YE/BU), harness side and ground.
      • Front Seat Climate Control Module (SCME) C3265A-H , circuit RHS02 (BU/OG), harness side and ground.
    1. GFD137436Courtesy of FORD MOTOR COMPANY

    Is voltage present on any circuits? 

    Yes  REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT driver seat side airbag C3051 and passenger seat side airbag C3052. REPOWER the SRS. REFER to Supplemental Restraint System .
    No  INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device . CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT driver seat side airbag C3051 and passenger seat side airbag C3052. REPOWER the SRS. REFER to Supplemental Restraint System .

  9. AB9 CHECK THE BACKREST TED CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.
    • Disconnect: Driver Seat Backrest TED C3034.
    • Ignition ON.
    • Measure the voltage between:
      • Front Seat Climate Control Module (SCME) C3265A-J , circuit CHS01 (GY/VT), harness side and ground.
      • Front Seat Climate Control Module (SCME) C3265A-K , circuit RHS01 (WH/VT), harness side and ground.
    1. GFD137437Courtesy of FORD MOTOR COMPANY

    Is voltage present on any circuits? 

    Yes  REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT driver seat side airbag C3051 and passenger seat side airbag C3052. REPOWER the SRS. REFER to Supplemental Restraint System .
    No  INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device . CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT driver seat side airbag C3051 and passenger seat side airbag C3052. REPOWER the SRS. REFER to Supplemental Restraint System .
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