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Pinpoint Test Ai: DTC B103D - Blower Driver OVERTEMPERATURE

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. AI1 CHECK THE BLOWER CIRCUIT FOR AN OPEN 
    • 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 C3036c
    • Disconnect: Cushion TED C3327
    • Disconnect: Backrest TED C3322
      • 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.
      • Fig 1: Measuring Resistance Between CCSM C3036C-16, Circuit CHS03 (GN/BN), Harness Side & Ground
      GF0021386Courtesy of FORD MOTOR CO.
    • Measure the resistance between CCSM C3036c-16, circuit CHS03 (GN/BN), harness side and ground.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  AI2.
    2. NO  : REPAIR the affected circuit. REPEAT the self-test.

      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. AI2 CHECK THE BLOWER CIRCUITS FOR A SHORT 
      Fig 2: Measuring Resistance Between CCSM C3036C-15 & C3036C-16, Circuit RHS03 (GY/OG) & CHS03 (GN/BN)
      GF0021387Courtesy of FORD MOTOR CO.
    • Measure the resistance between CCSM C3036c-15, circuit RHS03 (GY/OG), harness side and C3036c-16, circuit CHS03 (GN/BN), harness side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  AI3.
    2. NO  : REPAIR the affected circuits. 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 .

  3. AI3 CHECK THE BLOWER RESISTANCE 
      Fig 3: Measuring Resistance Between Cushion TED C3327 Pin 2 And Pin 4 & Between Backrest TED C3322 Pin 2 And Pin 4
      GF0021411Courtesy of FORD MOTOR CO.
      CAUTION: 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 will result in false readings and lead to incorrect identification of components that are not faulty.
    • Measure the resistance between cushion TED C3327 pin 2 and pin 4, component side and between backrest TED C3322 pin 2 and pin 4, component side.
    • Are the resistances between 6,000 ohms and 9,000 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 of the cushion TED was not  between 6,000 and 9,000 ohms, INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device . REPEAT the self-test. CLEAR the DTCs.

      If the resistance of the backrest TED was not  between 6,000 and 9,000 ohms, 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 .

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