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Pinpoint Test An: DTC B19A5

WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
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.
NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is ON.
NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.
  1. AN1 CHECK CUSHION TED BLOWER SPEED CONTROL CIRCUIT VHS23 (BN/BU) FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Depower the SRS  . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Passenger Seat Side Air Bag C327.
    • Disconnect: DCSM  C3036c.
    • Disconnect: Cushion TED  C3328.
    • Measure the resistance between DCSM  C3036c-3, circuit VHS23 (BN/BU), harness side and ground.
      Fig 1: Measuring Resistance Between DCSM C3036c-3, Circuit VHS23 (BN/BU), Harness Side And Ground
      G06504290Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
  2. AN2 CHECK CUSHION TED BLOWER SPEED CONTROL CIRCUIT VHS23 (BN/BU) AND BLOWER GROUND CIRCUIT RHS08 (VT/WH) FOR A SHORT TOGETHER 
    • Measure the resistance between DCSM  C3036c-3, circuit VHS23 (BN/BU), harness side and C3036c-7, circuit RHS08 (VT/WH), harness side.
      Fig 2: Measuring Resistance Between DCSM C3036c-3, Circuit VHS23 (BN/BU), Harness Side And C3036c-7, Circuit RHS08 (VT/WH)
      G06134427Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
  3. AN3 DETERMINE CUSHION TED OR DCSM FAILURE 
    • Remove the cushion TED  from the passenger seat. Refer to SEAT CUSHION THERMO-ELECTRIC DEVICE .
    • Remove the cushion TED  from the driver seat and install it on the passenger seat.
    • Connect: Cushion TED  C3328.
    • Connect: Dual Climate Controlled Seat Module (DCSM) C3036c.
      • 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. Refer to BATTERY, MOUNTING AND CABLES .
    • Start the engine and check operation of the passenger seat climate controlled seat system.
    • Does the seat operate with the TED from the other seat installed? 
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