Pinpoint Test As: DTC B272E

WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 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: If a seat equipped with a seat mounted side air bag is being serviced, the Supplemental Restraint System (SRS) must be depowered. Refer to SUPPLEMENTAL RESTRAINT SYSTEM .

NOTE: The air bag warning lamp illuminates when the Restraints Control Module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate an SRS fault.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

AS1 CHECK THE TED BLOWER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.
Depower the SRS . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
Disconnect: Driver Seat Side Air Bag C328.
Disconnect: Passenger Seat Side Air Bag C327.
Disconnect: DCSM C3036C.
Disconnect: Driver Cushion TED C3327.
Disconnect: Driver Backrest TED C3322.
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 .
Ignition ON.

Measure the voltage between DCSM C3036C , harness side and ground using the following chart:

DCSM Connector	Circuit
C3036C-15	RHS03 (GY/OG)
C3036C-16	CHS03 (GN/BN)

Fig 1: Measuring Voltage Between DCSM (C3036C), Harness Side And Ground

Courtesy of FORD MOTOR CO.

Is any voltage present?

Yes : REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328. CONNECT passenger seat side air bag module C327.

REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
No : GO to AS2 .

AS2 CHECK THE DRIVER TED BLOWER MOTOR CIRCUITS FOR AN OPEN
- Ignition OFF.
- Measure the resistance between:
  - DCSM C3036C-16 , circuit CHS03 (GN/BN), harness side and driver cushion TED C3327-2 , circuit CHS03 (GN/BN), harness side.
  - DCSM C3036C-15 , circuit RHS03 (GY/OG), harness side and driver cushion TED C3327-4 , circuit RHS03 (GY/OG), harness side.
    
    Fig 2: Measuring Resistance Between DCSM (C3036C-16), Circuit CHS03 (GN/BN) And Driver Cushion TED (C3327-2), Circuit CHS03 (GN/BN)
    Courtesy of FORD MOTOR CO.
Are the resistances less than 5 ohms?
- Yes : GO to AS3 .
- No : REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self-test.
  DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328. CONNECT passenger seat side air bag module C327.
  
  REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
AS3 CHECK THE RESISTANCE OF THE DRIVER CUSHION AND BACKREST TED BLOWER MOTORS
- NOTE: Connect the ohmmeter with the positive lead to pin 2 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected can result in false readings and lead to incorrect identification of components that are not faulty.
  
  Measure the resistance between driver cushion TED C3327 pin 2 and pin 4, component side and between driver backrest TED C3322 pin 2 and pin 4, component side.
  
  Fig 3: Measuring Resistance Between Driver Cushion TED (C3327) Pin 2 And Pin 4
  Courtesy of FORD MOTOR CO.
Are the resistances between 4, 000 ohms and 10, 000 ohms?
- Yes : INSTALL a new DCSM . REFER to DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) . REPEAT the self-test. CLEAR the DTCs.
  DISCONNECT the battery ground cable. CONNECT driver seat side air bag module C328. CONNECT passenger seat side air bag module C327.
  
  REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
- No : If the resistance of the cushion TED was not between 4, 000 ohms and 10, 000 ohms, INSTALL a new cushion TED . REFER to SEAT CUSHION THERMO-ELECTRIC DEVICE . CLEAR the DTCs. REPEAT the self-test.
  If the resistance of the backrest TED was not between 4, 000 ohms and 10, 000 ohms, 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 air bag module C328. CONNECT passenger seat side air bag module C327.
  
  REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM .