Pinpoint Test Ab: DTC B111C

WARNING: This page is about a different car, the 2012 Ford Pickup. 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.

AB1 CHECK THE TED CIRCUITS FOR AN OPEN

Ignition OFF.
Depower the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .
Disconnect: Passenger Seat Side Air Bag Module C339.
Disconnect: DCSM C3265A.
Disconnect: Cushion TED C3040.
Disconnect: Backrest TED C3039.

Measure the resistance between DCSM C3265A, harness side and cushion TED C3040, harness side; and between DCSM C3265A, harness side and backrest TED C3039, harness side using the following chart:

DCSM Connector	Circuit	TED Connector
C3265A-A	CHS07 (GY/BU)	C3040-1
C3265A-B	RHS07 (BU)	C3040-3
C3265A-C	CHS06 (BU/BN)/CHS01 (GY/VT)	C3039-1
C3265A-D	RHS06 (WH)/RHS01 (WH/VT)	C3039-3

Fig 1: Measuring Resistance Between DCSM C3265A, Harness Side And Cushion TED C3040, Harness Side

Courtesy of FORD MOTOR CO.

Are the resistances less than 5 ohms?
1. Yes : GO to AB2.
2. 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 .

AB2 CHECK THE TED CIRCUITS FOR A SHORT TO VOLTAGE

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 .
Ignition ON.

Measure the voltage between DCSM C3265A, harness side and ground using the following chart:

DCSM Connector	Circuit
C3265A-A	CHS07 (GY/BU)
C3265A-B	RHS07 (BU)
C3265A-C	CHS06 (BU/BN)
C3265A-D	RHS06 (WH)

Fig 2: Measuring Voltage Between DCSM C3265A, Harness Side And Ground

Courtesy of FORD MOTOR CO.

Is any voltage present on any circuits?
1. 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 .
2. No : GO to AB3.

AB3 CHECK THE BACKREST TED AND CUSHION TED RESISTANCES
- Ignition OFF.
- Measure the resistance between:
  - backrest TED C3039 pins 1 and 3, component side.
  - cushion TED C3040 pins 1 and 3, component side.
    
    Fig 3: Measuring Resistance Between Backrest TED C3039 Pins 1 And 3, Component Side
    Courtesy of FORD MOTOR CO.
- Are the resistances between 0.9 and 10 ohms?
  1. 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 .
  2. No : If the backrest TED resistance is not between 0.9 and 10 ohms, INSTALL a new backrest TED. REFER to SEAT BACKREST THERMO-ELECTRIC DEVICE . CLEAR the DTCs. REPEAT the self-test.
    If the cushion TED resistance is not between 0.9 and 10 ohms, INSTALL a new cushion TED. REFER to SEAT CUSHION 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 .