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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 803 (Seating) >> Diagnosis And Testing >> Seats >> Pinpoint Tests >> Pinpoint Test W: DTC B103D - Blower Driver Overtemperature >> Pinpoint Test W: DTC B103D - Blower Driver OVERTEMPERATURE

Pinpoint Test W: DTC B103D - Blower Driver OVERTEMPERATURE

WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
  1. W1 CHECK THE BLOWER CIRCUIT FOR AN OPEN 
    WARNING: The restraint system diagnostic tool is for restraint system service only. Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards.
    NOTE: If a seat equipped with a supplemental restraint system (SRS) component is being serviced, the SRS must be depowered.  Refer to SUPPLEMENTAL RESTRAINT SYSTEM .
    NOTE: The air bag warning lamp illuminates when the 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.
    • Key in OFF position.
      • WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
    • For vehicles with seat side air bags, carry out the following:
      • Depower the SRS. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
      • Disconnect the driver seat side air bag module C327.
      • Connect restraint system diagnostic tool 418-133 to driver seat side air bag module C327.
      • Disconnect the passenger seat side air bag module C313.
      • Connect restraint system diagnostic tool 418-133 to passenger seat side air bag module C313.
      • Connect the battery ground cable.
    • Disconnect: DCSM C3305c.
    • Disconnect: Cushion TED C3300.
    • Disconnect: Backrest TED C3310.
    • Measure the resistance between DCSM C3305c-16, circuit CHS03 (GN/BN), harness side and ground.
      Fig 1: Checking Blower Circuit For Open
      G04683366Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 

    Yes  : GO to W2.

    No  : REPAIR the affected circuit. REPEAT the self-test.

    If equipped with seat side air bags, DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C327 and CONNECT driver seat side air bag module C327. DISCONNECT the restraint system diagnostic tool from passenger seat side air bag module C313 and CONNECT passenger seat side air bag module C313. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  2. W2 CHECK THE BLOWER CIRCUITS FOR A SHORT 
    • Measure the resistance between DCSM C3305c-15, circuit RHS03 (GY/OG), harness side and C3305c-16, circuit CHS03 (GN/BN), harness side.
      Fig 2: Checking Blower Circuits For Short
      G04683367Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 

    Yes  : GO to W3.

    No  : REPAIR the affected circuits. REPEAT the self-test. CLEAR the DTCs.

    If equipped with seat side air bags, DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C327 and CONNECT driver seat side air bag module C327. DISCONNECT the restraint system diagnostic tool from passenger seat side air bag module C313 and CONNECT passenger seat side air bag module C313. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  3. W3 CHECK THE BLOWER RESISTANCE 
      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.
      Fig 3: Checking Blower Resistance
      G04683368Courtesy of FORD MOTOR CO.
    • Measure the resistance between cushion TED C3300 pin 2 and pin 4, component side and between backrest TED C3310 pin 2 and pin 4, component side.
    • Are the resistances between 6 Kohms and 9 Kohms? 

    Yes  : INSTALL a new DCSM and CARRY OUT programmable module installation (PMI). REFER to CLIMATE CONTROLLED SEAT MODULE . REPEAT the self-test. CLEAR the DTCs.

    No  : If the resistance of the cushion TED was not between 6,000 and 9,000 ohms, INSTALL a new cushion TED. 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. REPEAT the self-test. CLEAR the DTCs.

    If equipped with seat side air bags, DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C327 and CONNECT driver seat side air bag module C327. DISCONNECT the restraint system diagnostic tool from passenger seat side air bag module C313 and CONNECT passenger seat side air bag module C313. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

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