Pinpoint Test W : DTC B103C

WARNING: This page is about a different car, the 2015 Lincoln MKS. 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 is ON.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

W1 CHECK TED CIRCUITS FOR AN OPEN

Ignition OFF.

Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of Supplemental Restraint System .

Disconnect: Driver Seat Side Air Bag C367.

Disconnect: Passenger Seat Side Air Bag C3375.

Disconnect: DCSM C3265A.

Disconnect: Cushion TED C3035.

Disconnect: Backrest TED C3034.

Measure the resistance between DCSM C3265A , harness side and cushion TED C3035 , harness side; and between DCSM C3265A , harness side and backrest TED C3034 , harness side using the following chart:

DCSM Connector	Circuit	TED Connector
C3265A-G	CHS02 (YE/BU)	C3035-1
C3265A-H	RHS02 (BU/OG)	C3035-3
C3265A-J	CHS01 (GY/VT)	C3034-1
C3265A-K	RHS01 (WH/VT)	C3034-3

Courtesy of FORD MOTOR COMPANY

Are the resistances less than 3 ohms?

Yes	GO to W2.
No	REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C3375. CONNECT driver seat side air bag C367. REPOWER the SRS. REFER to Supplemental Restraint System .

W2 CHECK 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 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 voltage between DCSM C3265A , harness side and ground using the following chart:

Connector	Circuit
C3265A-G	CHS02 (YE/BU)
C3265A-H	RHS02 (BU/OG)
C3265A-J	CHS01 (GY/VT)
C3265A-K	RHS01 (WH/VT)

Courtesy of FORD MOTOR COMPANY

Is voltage present on any circuits?

Yes	REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test. DISCONNECT the battery ground cable. CONNECT passenger seat side air bag C3375. CONNECT driver seat side air bag C367. REPOWER the SRS. REFER to Supplemental Restraint System .
No	GO to W3.

W3 CHECK THE BACKREST TED AND CUSHION TED RESISTANCE

Ignition OFF.

Measure the resistance between:
- backrest TED C3034 pin 1 and pin 3, component side.
- cushion TED C3035 pin 1 and pin 3, component side.

Courtesy of FORD MOTOR COMPANY

Are the resistances between 0.9 and 10 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 C3375. CONNECT driver seat side air bag C367. REPOWER the SRS. REFER to Supplemental Restraint System .

If 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 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 C3375. CONNECT driver seat side air bag C367. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING