Symptom Chart

WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the Driver Seat Module (DSM)	Fuse Circuitry DSM	REFER to MODULE COMMUNICATIONS NETWORK .
No communication with the Dual Climate Controlled Seat Module (DCSM)	Fuse Circuitry DCSM	REFER to MODULE COMMUNICATIONS NETWORK .
The power seat is inoperative - driver, without power recliner	Fuse Circuitry Front seat control switch	GO to PINPOINT TEST A .
The power seat is inoperative - passenger, with power recline	Fuse Circuitry Front seat control switch	GO to PINPOINT TEST B .
The power seat is inoperative - passenger, without power recline	Fuse Circuitry Front seat control switch	GO to PINPOINT TEST C .
The power seat moves but is loose	Fastening hardware Seat track	GO to PINPOINT TEST D .
The power seat moves but is noisy	Seat track	GO to PINPOINT TEST E .
The power seat does not make full travel	Seat track obstructed Seat track	GO to PINPOINT TEST F .
The power seat does not move horizontally/vertically - driver	Circuitry Front seat motors Front seat control switch	GO to PINPOINT TEST G .
The power seat does not move horizontally/vertically/recline - passenger	Circuitry Front seat motors Front seat control switch	GO to PINPOINT TEST H .
The power seat does not move horizontally/vertically - passenger	Circuitry Front seat motors Front seat control switch	GO to PINPOINT TEST I .
The memory seat is inoperative/does not operate correctly - does not operate horizontally/vertically/recline, MKX	Fuse Circuitry Seat control switch Memory seat track Memory recline motor DSM	GO to PINPOINT TEST J .
The memory seat does not operate correctly - does not operate using the memory SET switch, MKX	Circuitry Memory SET switch Memory seat track DSM	GO to PINPOINT TEST K .
The memory seat is inoperative/does not operate correctly - does not operate horizontally/vertically, Edge	Fuse Circuitry Seat control switch Memory seat track DSM	GO to PINPOINT TEST L .
The memory seat does not operate correctly - does not operate using the memory SET switch, Edge	Circuitry Memory SET switch Memory seat track DSM	GO to PINPOINT TEST M .
The memory seat does not operate correctly - the seat moves in one-second intervals	Circuitry DSM	REFER to the DRIVER SEAT MODULE (DSM) DTC CHART .
The memory seat does not operate correctly - the seat does not move to the correct memory position	Circuitry Memory SET switch DSM Seat track	REFER to the DRIVER SEAT MODULE (DSM) DTC CHART .
The memory seat does not operate correctly - does not operate using the Remote Keyless Entry (RKE) transmitter	RKE Integrated Keyhead Transmitter (IKT) is not correctly associated to a memory position Circuitry IKT DSM Smart Junction Box (SJB)	VERIFY the RKE transmitter is operating correctly and is associated to a memory position. REFER to Owner's Literature or HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS for information on associating a RKE transmitter. RUN the DSM self-test and REFER to the DRIVER SEAT MODULE (DSM) DTC CHART to diagnose any DTCs retrieved.
Easy entry/easy exit is inoperative/does not operate correctly	Circuitry Key in ignition switch Instrument Cluster (IC) module DSM	GO to PINPOINT TEST N .
The power lumbar is inoperative - driver	Circuitry Seat control switch Power lumbar motor assembly	GO to PINPOINT TEST O .
The power lumbar is inoperative - passenger	Circuitry Seat control switch Power lumbar motor assembly	GO to PINPOINT TEST P .
The heated seats are inoperative - front	Fuse Circuitry Heated seat module	GO to PINPOINT TEST Q .
The heated seat is inoperative/does not operate correctly - driver	Fuse Circuitry HVAC module (heated seat switch) Seat cushion heater mat Seat backrest heater mat Heated seat module	GO to PINPOINT TEST R .
The heated seat is inoperative/does not operate correctly - front passenger	Fuse Circuitry HVAC module (heated seat switch) Seat cushion heater mat Seat backrest heater mat Heated seat module	GO to PINPOINT TEST S .
The heated seat is inoperative - driver seat does heat but the heated seat indicator does not illuminate when pressed	Wiring, terminals or connectors HVAC module (heated seat switch) Heated seat module	GO to PINPOINT TEST T .
The heated seat is inoperative - front passenger seat does heat but the heated seat indicator does not illuminate when pressed	Wiring, terminals or connectors HVAC module (heated seat switch) Heated seat module	GO to PINPOINT TEST U .
The front fold-flat seat backrest does not operate correctly - the recliners do not lock in place, release or are not synchronized	Fold-flat recliner cable RH fold-flat recliner LH fold-flat recliner	ADJUST the fold-flat recliners and cable. REFER to passenger seat with fold-flat backrest in the installation portion of SEAT BACKREST - FRONT . After adjustment, verify the recliners are synchronized and locked in place. If the concern remains, CHECK the cable and recliners for correct operation and install new as necessary.
The heated seats are inoperative - rear	Fuse Circuitry Heated seat module	GO to PINPOINT TEST V .
The heated seat is inoperative/does not operate correctly - left rear	Circuitry Heated seat switch Seat cushion heater mat Seat backrest heater mat Heated seat module	GO to PINPOINT TEST W .
The heated seat is inoperative/does not operate correctly - right rear	Circuitry Heated seat switch Seat cushion heater mat Seat backrest heater mat Heated seat module	GO to PINPOINT TEST X .
The heated seat is inoperative - left rear seat does heat but the heated seat indicator does not illuminate when pressed	Wiring, terminals or connectors Heated seat switch Heated seat module	GO to PINPOINT TEST Y .
The heated seat is inoperative - left rear seat does heat but the heated seat indicator is on all the time	Wiring, terminals or connectors Heated seat module	GO to PINPOINT TEST Z .
The heated seat is inoperative - right rear seat does heat but the heated seat indicator does not illuminate when pressed	Wiring, terminals or connectors Heated seat switch Heated seat module	GO to PINPOINT TEST AA .
The heated seat is inoperative - right rear seat does heat but the heated seat indicator is on all the time	Wiring, terminals or connectors Heated seat module	GO to PINPOINT TEST AB .
All climate controlled seats are inoperative	Fuse Circuitry Medium Speed Controller Area Network (MSCAN) communication fault DCSM HVAC module	VERIFY Battery Junction Box (BJB) fuse 16 (30A) is OK. If OK, CARRY OUT the network test using a scan tool and VERIFY network communication of the HVAC module and DCSM . REFER to MODULE COMMUNICATIONS NETWORK to diagnose a module communication or network concern. If OK, CARRY OUT the DCSM self-test and RETRIEVE any DTCs. If any DTC is present, REFER to the DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) DTC CHART . CHECK the climate control system for correct operation. REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS for diagnosis of the HVAC or climate control system. If OK, INSTALL a new DCSM . REFER to DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) .
A single climate controlled seat is inoperative - switch indicators may or may not illuminate	Circuitry HVAC module DCSM	NOTE: If a fault occurs setting a DTC specific to only one climate controlled seat, the DCSM will disable only the affected seat outputs and allow the other seat to remain operational. CHECK for DTCs specific to the affected climate controlled seat and if a DTC is present, REFER to the DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) DTC CHART . GO to PINPOINT TEST AC .
A single climate controlled seat does not operate correctly - poor or intermittent cooling/heating	Excessive sunload or extreme cabin temperatures Incorrectly installed Thermo-Electric Device (TED) or manifold Airflow blockage TED DCSM	CARRY OUT the DCSM self-test and retrieve any DTCs. If any DTC is present, REFER to the DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) DTC CHART . If no DTC is present, CHECK the affected seat cushion or backrest for correct installation of the climate controlled seat components (TED , manifold air duct and foam pad) and REPAIR as needed. If OK, CHECK for airflow restrictions (TED inlets and outlets, TED -to-manifold connections, filters and ducts) and REPAIR as needed. CHECK the TED cooling performance on the affected seat and VERIFY the system is operating correctly. REFER to COMPONENT TEST - THERMO-ELECTRIC DEVICE (TED) COOLING PERFORMANCE . RETEST the system for normal operation.
A single climate controlled seat does not operate correctly - exhibits poor airflow or performance	Incorrectly installed TED or manifold Airflow blockage Disconnected air duct	CARRY OUT the DCSM self-test and retrieve any DTCs. If any DTC is present, REFER to the DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) DTC CHART . If no DTC is present, CHECK the affected seat cushion or backrest for correct installation of the climate controlled seat components (TED , manifold air duct and foam pad) and REPAIR as needed. If OK, CHECK for airflow restrictions (TED inlets and outlets, TED -to-manifold connections, filters and ducts) and REPAIR as needed. RETEST the system for normal operation.
The power seat is inoperative/does not operate correctly - both rear, power fold	Fuse Circuitry Power-fold relay Power-fold switch SJB	GO to PINPOINT TEST BA .
The power seat is inoperative/does not operate correctly - left rear, power fold	Circuitry Power-fold relay Power-fold switch Power-fold actuator	GO to PINPOINT TEST BB .
The power seat is inoperative/does not operate correctly - right rear, power fold	Circuitry Power-fold relay Power-fold switch Power-fold actuator	GO to PINPOINT TEST BC .
The second row seat recliner does not operate correctly	Seat recliner not synchronized Seat recliner damaged Seat recliner cable	CHECK for correct seat recliner synchronization. REFER to SEAT - REAR, 40 PERCENT or SEAT - REAR, 60 PERCENT . If recliner synchronization is OK, INSTALL new parts as necessary.