NOTE: The SCME active commands TED_HEAT_D (driver seat) and TED_HEAT_P (passenger seat) are limited to 15 seconds in the ON state. Operate the affected climate controlled seat using the active command while monitoring the appropriate Parameter Identifications (PIDs) for that seat. When the command is in process, the blower motor temperature Parameter Identifications (PIDs) on the affected seat should momentarily increase. If no temperature increase is noted, remove the cushion blower filter and repeat the active command while physically monitoring the cushion blower for fan movement.
Do the PID states or cushion blower movement indicate climate controlled seat operation when using the active command?
Yes | GO to J3 |
|---|---|
No | INSTALL a new SCME. REFER to: Front Seat Climate Control Module [SCME] (501-10A Front Seats, Removal and Installation). |
J3 USE THE FCIM (FRONT CONTROLS INTERFACE MODULE) BUTTONS AND MONITOR THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) PID (PARAMETER IDENTIFICATION) FOR A RESPONSE
Using a diagnostic scan tool, view the SCME Parameter Identifications (PIDs):
Driver State Seat Mode (DCCSMOD) (driver seat) Passenger State Seat Mode (PCCSMOD) (passenger seat)
Start the engine.
NOTE: Operation of the climate controlled seats repeatedly on and off or repeatedly switching between heat and cool modes may cause SCME Diagnostic Trouble Codes (DTCs) to set, disabling one or both seat system and may require Diagnostic Trouble Codes (DTCs) to be cleared before seat operation may continue. It is recommended to allow time between modes for seat temperatures to return toward ambient temperatures before continuing. Attempt to operate the affected climate controlled seat in all modes using the appropriate buttons on the FCIM while monitoring the SCME PID DCCSMOD (driver seat) or PCCSMOD (passenger seat).
Do all the PID states match the climate controlled seat settings selected on the FCIM?
Yes | To diagnose the inoperative touchscreen button(s), REFER to: Information and Entertainment System (415-00B Information and Entertainment System - General Information - Vehicles With: Touchscreen Display, Diagnosis and Testing). |
|---|---|
No | If only the climate seat functionality is inoperative, INSTALL a new FCIM. REFER to: Front Controls Interface Module (FCIM) (415-00B Information and Entertainment System - General Information - Vehicles With: Touchscreen Display, Removal and Installation). If other features of the FCIM are also inoperative, DIAGNOSE the FCIM concern. REFER to: Climate Control System - Vehicles With: Dual Automatic Temperature Control (DATC) (412-00 Climate Control System - General Information, Diagnosis and Testing). |
DTC B2486
Refer to Wiring Diagrams Cell 119 for schematic and connector information.
Refer to Wiring Diagrams Cell 123 for schematic and connector information.
Normal Operation and Fault Conditions
The SCME monitors the input voltage for correct operation. If the SCME detects input voltage below 10 volts or above 15 volts, it stores DTC B2486 in memory. If DTC B2486 is set, the SCME enters a standby mode and suspends operation of both seats until system voltage between 10 and 15 volts is restored and a climate controlled seat switch button is selected on.
DTC Fault Trigger Conditions
DTC | Description | Fault Trigger Conditions |
|---|---|---|
B2486 Climate Control Seat Module Voltage Out of Range | NOTE: DTC B2486 can be set if the vehicle has been recently jump started, the battery has been recently charged or the battery has been discharged. The battery may become discharged due to excessive load(s) on the charging system from aftermarket accessories or if the battery has been left unattended with the accessories on. If the SCME detects voltage below 10 volts or greater than 15 volts, the DTC is set. |
Possible Causes
Wiring, terminals or connectors SCME
PINPOINT TEST K : DTC B2486
WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
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.