NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out. Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs). Using a diagnostic scan tool, repeat the DSM self-test.
Is DTC U0140 still present?
Yes | GO to I5 |
|---|---|
No | The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition. |
I5 CHECK FOR DTC U0140/U0140:00 IN OTHER MODULES
NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out. Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs). Ignition OFF. Ignition ON. Wait 10 seconds. Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.
Is DTC U0140/U0140:00 set in other modules?
Yes | Click here to access Guided Routine (BCM). |
|---|---|
No | INSTALL a new DSM. REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation). |
One or Both Single Climate Controlled Seats are Inoperative
Refer to Wiring Diagrams Cell 119 for schematic and connector information.
Normal Operation and Fault Conditions
The SCME is supplied voltage at all times, but the climate controlled seat system only operates with the engine running. The system can be operated with the ignition ON engine OFF by using a diagnostic scan tool to bypass the climate controlled seat buttons on the touchscreen and FCIM. When commanding a heat or cool mode operation in this manner, it only operates in 15 second intervals.
Both voltage supply circuits are spliced together internal to the SCME, so if one circuit becomes open, both seats can still be operated. However, if a fault occurs setting a DTC specific to either climate controlled seat, only the affected seat is disabled by the SCME.
Possible Causes
Wiring, terminals or connectors FDIM FCIM SCME
Visual Inspection and Diagnostic Pre-checks
Verify BJB fuse 14 (30A) is OK.
PINPOINT TEST J : ONE OR BOTH CLIMATE CONTROLLED SEATS ARE INOPERATIVE
J1 CHECK FOR SCME (FRONT SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
Using a diagnostic scan tool, perform the SCME self-test.
Were any Diagnostic Trouble Codes (DTCs) retrieved?
Yes | GO to the SCME DTC Chart. |
|---|---|
No | If the diagnostic scan tool did not communicate to the SCME, REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing). Otherwise, GO to J2 |
J2 CHECK OPERATION OF THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) USING PARAMETER IDENTIFICATIONS (PIDS)
NOTE: This step verifies the SCME is able to receive and process inbound command messages from the network and demonstrates if the SCME is operational. If the SCME is functioning correctly, this indicates the FDIM or FCIM may not be sending the commands correctly. Using a diagnostic scan tool, view the SCME Parameter Identifications (PIDs):
Driver Seat
Seat cushion thermal electric device temperature (CSHTEMP) Seat back thermal electric device temperature (BKTMP) Climate-controlled seat heat command (TED_HEAT_D)
Front Passenger Seat
Passenger Cushion Thermal Electric Device (TED) Temperature (PCSHTMP)
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.