Pinpoint Test AF : DTC B111C

WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: When taking measurements at Front Seat Climate Control Module (SCME) 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 airbag warning indicator illuminates when the correct RCM fuse is removed and the ignition is ON.

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

AF1 CHECK THE TED CIRCUITS FOR AN OPEN

Ignition OFF.

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

Disconnect: Passenger Seat Side Airbag C3052.

Disconnect: Front Seat Climate Control Module (SCME) C3265A.

Disconnect: Passenger Seat Cushion TED C3040.

Disconnect: Passenger Seat 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 .

Measure the resistance of the following circuits.

Front Seat Climate Control Module (SCME) Connector	Circuit	TED Connector
C3265A-A	CHS07 (GY/BU)	C3040-1
C3265A-B	RHS07 (BU)	C3040-3
C3265A-C	CHS06 (BU/BN) and CHS01 (GY/VT) (10-Way Power Seat)	C3039-1
C3265A-D	RHS06 (WH) and RHS01 (WH/VT) (10-Way Power Seat)	C3039-3

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Are the resistances less than 5 ohms?

Yes	GO to AF2.
No	REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.DISCONNECT the battery ground cable. CONNECT passenger seat side airbag C3052.REPOWER the SRS. REFER to Supplemental Restraint System .

AF2 CHECK THE TED CIRCUITS FOR A SHORT TO VOLTAGE

Ignition ON.

Measure the voltage between the following Front Seat Climate Control Module (SCME) C3265A pins, harness side and ground.

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

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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 airbag C3052.REPOWER the SRS. REFER to Supplemental Restraint System .
No	GO to AF3.

AF3 CHECK RESISTANCE OF THE TEDs

Ignition OFF.

Measure the resistance between:
- passenger seat backrest TED C3039 pin 1 and pin 3, component side.
- passenger seat cushion TED C3040 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 Front Seat Climate Control Module (SCME). REFER to Dual Climate Controlled Seat Module (DCSM) . CLEAR the DTCs. REPEAT the self-test.DISCONNECT the battery ground cable. CONNECT passenger seat side airbag C3052.REPOWER the SRS. REFER to Supplemental Restraint System .
No	If the resistance of the backrest TED was 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 resistance of the cushion TED was not between 0.9 and 10 ohms, INSTALL a new cushion TED. REFER to Seat Cushion Thermo-Electric Device .