Pinpoint Test AO : DTC B19A8

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.

AO1 CHECK THE BACKREST TED BLOWER SPEED CONTROL CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

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

Disconnect: Driver Seat Side Airbag C3051.

Disconnect: Passenger Seat Side Airbag C3052.

Disconnect: Front Seat Climate Control Module (SCME) C3265C.

Disconnect: Driver Seat Backrest TED C3034.

Measure the resistance between Front Seat Climate Control Module (SCME) C3265C-12 , circuit CHS04 (YE/GY), harness side and ground.

Courtesy of FORD MOTOR COMPANY

Is the resistance greater than 10, 000 ohms?

Yes	GO to AO2.
No	REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.DISCONNECT the battery ground cable.CONNECT driver seat side airbag C3051 and passenger seat side airbag C3052.REPOWER the SRS. REFER to Supplemental Restraint System .

AO2 CHECK BACKREST TED BLOWER SPEED CONTROL CIRCUIT AND BLOWER GROUND CIRCUIT FOR A SHORT TOGETHER

Measure the resistance between Front Seat Climate Control Module (SCME) C3265C-12 , circuit CHS04 (YE/GY), harness side and C3265C-15 , circuit CHS03 (GN/BN), harness side.

Courtesy of FORD MOTOR COMPANY

Is the resistance greater than 10, 000 ohms?

Yes

INSTALL a new backrest TED. REFER to Seat Backrest Thermo-Electric Device . CLEAR the DTCs. REPEAT the self-test.If the DTC is retrieved again, 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 driver seat side airbag C3051 and passenger seat side airbag C3052.REPOWER the SRS. REFER to Supplemental Restraint System .

REPAIR the circuits. CLEAR the DTCs. REPEAT the self-test.DISCONNECT the battery ground cable.CONNECT driver seat side airbag C3051 and passenger seat side airbag C3052.REPOWER the SRS. REFER to Supplemental Restraint System .