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Pinpoint Test Ag: DTC B103B/B1111 - Thermoelectric Driver OVERCURRENT Low/Driver Thermoelectric Device Control OVERTEMPERATURE Fault

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: The air bag warning indicator illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault.
NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
  1. AG1 CHECK THE TED CIRCUITS FOR SHORT TO GROUND 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of SUPPLEMENTAL RESTRAINT SYSTEM .
    • Disconnect: Driver seat side air bag C328
    • Disconnect: Driver seat safety belt buckle pretensioner C3201
    • Disconnect: Passenger seat side air bag C327
    • Disconnect: Passenger seat safety belt buckle pretensioner C3202
    • Disconnect: CCSM C3036a
      • WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any air bag module 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.
    • Measure the resistance between the following CCSM C3036a pins, harness side and ground.
      Connector-Pin Circuit
      C3036a-G CHS02 (YE/BU)
      C3036a-H RHS02 (BU/OG)
      C3036a-J CHS01 (GY/VT)
      C3036a-K RHS01 (WH/VT)
    • Are the resistances greater than 10,000 ohms? 
    1. YES  : Go to  AG2.
    2. NO  : If the resistances of C3036a-G, circuit CHS02 (YE/BU) and/or C3036a-H, circuit RHS02 (BU/OG) to ground were not  greater than 10,000 ohms to ground, go to  AG6 .

      If resistances of C3036a-J, circuit CHS01 (GY/VT) and/or C3036a-K, circuit RHS01 (WH/VT) to ground were not  greater than 10,000 ohms to ground, go to  AG7 .

  2. AG2 CHECK THE TED CIRCUITS FOR SHORT TO VOLTAGE 
    • Key in ON position.
    • Measure the voltage between the following CCSM C3036a pins, harness side and ground.
      Connector-Pin Circuit
      C3036a-G CHS02 (YE/BU)
      C3036a-H RHS02 (BU/OG)
      C3036a-J CHS01 (GY/VT)
      C3036a-K RHS01 (WH/VT)
    • Are the voltages less than 1 volt? 
    1. YES  : Go to  AG3.
    2. NO  : If the voltages measured at C3036a-G and/or C3036a-H were not  less than 1 volt, go to  AG8 .

      If voltages measured at C3036a-J and/or C3036a-K were not  less than 1 volt, go to  AG9.

  3. AG3 CHECK THE TED RESISTANCE 
    • Key in OFF position.
      • Fig 1: Measuring Voltage Between CCSM C3036A-G, Circuit CHS02 (YE/BU) & CCSM C3036A-H
      GF0021379Courtesy of FORD MOTOR CO.
      CAUTION: 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 CCSM C3036a-G, circuit CHS02 (YE/BU), harness side and CCSM C3036a-H, circuit RHS02 (BU/OG), harness side; and between CCSM C3036a-J, circuit CHS01 (GY/VT), harness side and C3036a-K, circuit RHS01 (WH/VT), harness side and ground.
    • Are the resistances between 0.9 and 10 ohms? 
    1. YES  : INSTALL a new CCSM and CARRY OUT programmable module installation (PMI). REFER to Climate Controlled Seat Module . REPEAT the self-test. CLEAR the DTCs.

      DISCONNECT the battery ground cable.

      CONNECT passenger safety belt buckle pretensioner C3202. CONNECT passenger seat side air bag module C327.

      CONNECT driver safety belt buckle pretensioner C3201. CONNECT driver seat side air bag module C328.

      REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

    2. NO  : If the resistance between CCSM C3036a-G and C3036a-H was not  between 0.9 and 10 ohms, go to  AG5 .

      If the resistance between CCSM C3036a-J and C3036a-K was not  between 0.9 and 10 ohms, go to  AG4 .

  4. AG4 CHECK THE RESISTANCE OF THE BACKREST TED 
    • Disconnect: Backrest TED C3322
      • Fig 2: Measuring Resistance Between Backrest TED C3322 Pin 1 & Pin 3, Component Side
      GF0021380Courtesy of FORD MOTOR CO.
    • Measure the resistance between backrest TED C3322 pin 1 and pin 3, component side.
    • Is the resistance between 0.9 and 10 ohms? 
    1. YES  : REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

      DISCONNECT the battery ground cable.

      CONNECT passenger safety belt buckle pretensioner C3202. CONNECT passenger seat side air bag module C327.

      CONNECT driver safety belt buckle pretensioner C3201. CONNECT driver seat side air bag module C328.

      REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

    2. NO  : INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device . REPEAT the self-test. CLEAR the DTCs.

      DISCONNECT the battery ground cable.

      CONNECT passenger safety belt buckle pretensioner C3202. CONNECT passenger seat side air bag module C327.

      CONNECT driver safety belt buckle pretensioner C3201. CONNECT driver seat side air bag module C328.

      REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  5. AG5 CHECK THE RESISTANCE OF THE CUSHION TED 
    • Disconnect: Cushion TED C3327
      • Fig 3: Measuring Resistance Between Backrest TED C3327 Pin 1 & Pin 3, Component Side
      GF0021380Courtesy of FORD MOTOR CO.
    • Measure the resistance between cushion TED C3327 pin 1 and pin 3, component side.
    • Is the resistance between 0.9 and 10 ohms? 
    1. YES  : REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

      DISCONNECT the battery ground cable.

      CONNECT passenger safety belt buckle pretensioner C3202. CONNECT passenger seat side air bag module C327.

      CONNECT driver safety belt buckle pretensioner C3201. CONNECT driver seat side air bag module C328.

      REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

    2. NO  : INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device . REPEAT the self-test. CLEAR the DTCs.

      DISCONNECT the battery ground cable.

      CONNECT passenger safety belt buckle pretensioner C3202. CONNECT passenger seat side air bag module C327.

      CONNECT driver safety belt buckle pretensioner C3201. CONNECT driver seat side air bag module C328.

      REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  6. AG6 CHECK THE CUSHION TED CIRCUITS FOR SHORT TO GROUND 
    • Disconnect: Cushion TED C3327
      • Fig 4: Measuring Resistance Between CCSM C3036A-G & C3036A-H, Circuit CHS02 (YE/BU) & RHS02 (BU/OG)
      GF0021382Courtesy of FORD MOTOR CO.
    • Measure the resistance between CCSM C3036a-G, circuit CHS02 (YE/BU), harness side and ground and between C3036a-H, circuit RHS02 (BU/OG), harness side and ground.
    • Are the resistances greater than 10,000 ohms? 
    1. YES  : INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device . REPEAT the self-test. CLEAR the DTCs.

      DISCONNECT the battery ground cable.

      CONNECT passenger safety belt buckle pretensioner C3202. CONNECT passenger seat side air bag module C327.

      CONNECT driver safety belt buckle pretensioner C3201. CONNECT driver seat side air bag module C328.

      REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

    2. NO  : REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

      DISCONNECT the battery ground cable.

      CONNECT passenger safety belt buckle pretensioner C3202. CONNECT passenger seat side air bag module C327.

      CONNECT driver safety belt buckle pretensioner C3201. CONNECT driver seat side air bag module C328.

      REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  7. AG7 CHECK THE BACKREST TED CIRCUITS FOR SHORT TO GROUND 
    • Disconnect: Backrest TED C3322
      • Fig 5: Measuring Resistance Between CCSM C3036A-J & C3036A-K, Circuit CHS01 (GY/VT) & RHS01 (WH/VT)
      GF0021383Courtesy of FORD MOTOR CO.
    • Measure the resistance between CCSM C3036a-J, circuit CHS01 (GY/VT), harness side and ground and between C3036a-K, circuit RHS01 (WH/VT), harness side and ground.
    • Are the resistances greater than 10,000 ohms? 
    1. YES  : INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device . REPEAT the self-test. CLEAR the DTCs.

      DISCONNECT the battery ground cable.

      CONNECT passenger safety belt buckle pretensioner C3202. CONNECT passenger seat side air bag module C327.

      CONNECT driver safety belt buckle pretensioner C3201. CONNECT driver seat side air bag module C328.

      REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

    2. NO  : REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

      DISCONNECT the battery ground cable.

      CONNECT passenger safety belt buckle pretensioner C3202. CONNECT passenger seat side air bag module C327.

      CONNECT driver safety belt buckle pretensioner C3201. CONNECT driver seat side air bag module C328.

      REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  8. AG8 CHECK THE CUSHION TED CIRCUITS FOR SHORT TO VOLTAGE 
    • Key in OFF position.
    • Disconnect: Cushion TED C3327
    • Key in ON position.
      • Fig 6: Measuring Resistance Between CCSM C3036A-G & C3036A-H, Circuit CHS02 (YE/BU) & RHS02 (BU/OG)
      GF0021384Courtesy of FORD MOTOR CO.
    • Measure the voltage between CCSM C3036a-G, circuit CHS02 (YE/BU), harness side and ground and between C3036a-H, circuit RHS02 (BU/OG), harness side and ground.
    • Are the voltages less than 1 volt? 
    1. YES  : INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device . REPEAT the self-test. CLEAR the DTCs.

      DISCONNECT the battery ground cable.

      CONNECT passenger safety belt buckle pretensioner C3202. CONNECT passenger seat side air bag module C327.

      CONNECT driver safety belt buckle pretensioner C3201. CONNECT driver seat side air bag module C328.

      REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

    2. NO  : REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

      DISCONNECT the battery ground cable.

      CONNECT passenger safety belt buckle pretensioner C3202. CONNECT passenger seat side air bag module C327.

      CONNECT driver safety belt buckle pretensioner C3201. CONNECT driver seat side air bag module C328.

      REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  9. AG9 CHECK THE BACKREST TED CIRCUITS FOR SHORT TO VOLTAGE 
    • Key in OFF position.
    • Disconnect: Backrest TED C3322
    • Key in ON position.
      • Fig 7: Measuring Resistance Between CCSM C3036A-J & C3036A-K, Circuit CHS01 (GY/VT) & RHS01 (WH/VT)
      GF0021385Courtesy of FORD MOTOR CO.
    • Measure the voltage between CCSM C3036a-J, circuit CHS01 (GY/VT), harness side and ground and between C3036a-K, circuit RHS01 (WH/VT), harness side and ground.
    • Are the voltages less than 1 volt? 
    1. YES  : INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device . REPEAT the self-test. CLEAR the DTCs.

      DISCONNECT the battery ground cable.

      CONNECT passenger safety belt buckle pretensioner C3202. CONNECT passenger seat side air bag module C327.

      CONNECT driver safety belt buckle pretensioner C3201. CONNECT driver seat side air bag module C328.

      REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

    2. NO  : REPAIR the affected circuit. REPEAT the self-test. CLEAR the DTCs.

      DISCONNECT the battery ground cable.

      CONNECT passenger safety belt buckle pretensioner C3202. CONNECT passenger seat side air bag module C327.

      CONNECT driver safety belt buckle pretensioner C3201. CONNECT driver seat side air bag module C328.

      REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

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