Pinpoint Test Q : One Or Both Climate Controlled Seats Are Inoperative

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

Q1 CHECK FOR Front Seat Climate Control Module (SCME) DTCs

Enter the following diagnostic mode on the scan tool: Self Test - Front Seat Climate Control Module (SCME).

Were any DTCs retrieved?

Yes	GO to the Front Seat Climate Control Module (SCME) DTC Chart .
No	If the diagnostic scan tool did not communicate to the Front Seat Climate Control Module (SCME), REFER to Module Communications Network . Otherwise, GO to Q2.

Q2 CHECK OPERATION OF THE Front Seat Climate Control Module (SCME) USING PIDs

NOTE: The purpose of this step is to verify the Front Seat Climate Control Module (SCME) is able to receive and process inbound command messages from the communication bus and demonstrate if the Front Seat Climate Control Module (SCME) is operational. This indicates the FCIM or touchscreen may not be sending the commands correctly.

Enter the following diagnostic mode on the scan tool: DataLogger - Front Seat Climate Control Module (SCME).
Driver Seat
- Seat cushion thermal electric device temperature (CSHTEMP)
- Seat back thermal electric device temperature (BK_TEMP)
- Climate-controlled seat heat command (TED _HEAT_D)
Front Passenger Seat
- Passenger Cushion TED Temperature (PCSHTMP)
- Passenger Back TED Temperature (PBKTMP)
- Passenger TED Heat Mode (TED _HEAT_P)

NOTE: The Front Seat Climate Control Module (SCME) active commands TED _HEAT_D (driver seat) and TED _HEAT_P (passenger seat) are limited to 15 seconds in the ON state, then turn OFF.

Operate the affected climate controlled seat using the active command while monitoring the appropriate PIDs.
- When the command is in process the TED temperature PIDs 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 Q3.
No	INSTALL a new Front Seat Climate Control Module (SCME). REFER to Dual Climate Controlled Seat Module (DCSM) . CLEAR the DTCs. REPEAT the self-test.

Q3 USE THE CLIMATE CONTROLLED SEAT SWITCHES ON THE FCIM AND MONITOR THE Front Seat Climate Control Module (SCME) PID FOR A RESPONSE

Enter the following diagnostic mode on the scan tool: DataLogger - Front Seat Climate Control Module (SCME).
- 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 Front Seat Climate Control Module (SCME) DTCs to set, disabling one or both seat system and may require 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 switch buttons on the FCIM while monitoring the Front Seat Climate Control Module (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 the appropriate Information and Entertainment Systems article for the procedure.
No	If only the climate seat functionality is inoperative, INSTALL a new FCIM. Refer to the appropriate Information and Entertainment Systems article for the procedure. CLEAR the DTCs. REPEAT the self-test. If other features of the FCIM are also inoperative, DIAGNOSE the FCIM concern. REFER to Climate Control System General Information .