Pinpoint Test As: DTC B272F

WARNING: This page is about a different car, the 2014 Ford F-150. 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 repaired, 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 .
Disconnect: Passenger Seat Side Air Bag Module C339 .
Disconnect: DCSM C3265C .
Disconnect: Cushion TED C3040 .
Disconnect: Backrest TED C3039 .
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 C3265C , harness side and ground using the following chart.

DCSM Connector	Circuit
C3265C-7	RHS08 (VT/WH)
C3265C-8	CHS08 (BN/YE)

Fig 1: Measuring Voltage Between DCSM C3265C And Ground

Courtesy of FORD MOTOR CO.

Is any voltage present on either circuit?

Yes : REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT passenger seat side air bag module C339 . REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
No : GO to AS2 .

AS2 CHECK THE TED BLOWER MOTOR CIRCUITS FOR AN OPEN

Ignition OFF.

Measure the resistance between DCSM C3265C pins, harness side and cushion TED C3040 pins, harness side using the following chart.

DCSM Connector	Circuit	Cushion TED Connector
C3265C-7	RHS08 (VT/WH)	C3040-4
C3265C-8	CHS08 (BN/YE)	C3040-2

Fig 2: Measuring Resistance Between DCSM C3265C Pins And Cushion TED C3040 Pins

Courtesy of FORD MOTOR CO.

Are the resistances less than 5 ohms?

Yes : GO to AS3 .
No : REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.
DISCONNECT the battery ground cable. CONNECT passenger seat side air bag module C339 . REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

AS3 CHECK THE RESISTANCE OF THE CUSHION AND BACKREST TED BLOWER MOTORS
- NOTE: 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 C3040 pins 2 and 4, component side.
  - backrest TED C3039 pins 2 and 4, component side.
    
    Fig 3: Measuring Resistance Between Cushion TED C3040 Pins 2 And 4
    Courtesy of FORD MOTOR CO.
Are the resistances between 4, 000 and 10, 000 ohms?
- Yes : INSTALL a new DCSM . REFER to DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) . CLEAR the DTCs. REPEAT the self-test.
  DISCONNECT the battery ground cable. CONNECT passenger seat side air bag module C339 . REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
- No : If the cushion TED resistance is not between 4, 000 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 backrest TED resistance is not between 4, 000 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 passenger seat side air bag module C339 . REPOWER the SRS . REFER to SUPPLEMENTAL RESTRAINT SYSTEM .