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HOMESERVICE MANUALSLINCOLN2009NAVIGATOR L RWDREPAIR AND DIAGNOSISBODY & FRAMESEATSSEAT SYSTEM - SEATINGDIAGNOSIS AND TESTINGSEATSSYMPTOM CHART

2009 Lincoln Navigator L RWD

Symptom Chart

2009 Lincoln Navigator L RWDSECTION Symptom Chart

NOTE: The Smart Junction Box (SJB) may also be identified as the Generic Electronic Module (GEM).

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 .
No communication with the module - unable to carry out self-test with the DSM	Fuse(s) Circuitry DSM	REFER to MODULE COMMUNICATIONS NETWORK .
The power seat is inoperative - driver, with power recliner	Fuse Circuitry Seat control switch	Go To PINPOINT TEST A .
The power seat is inoperative - driver, without power recliner	Fuse Seat control switch Circuitry	Go To PINPOINT TEST B .
The power seat is inoperative - passenger, with power recliner	Fuse Circuitry Seat control switch	Go To PINPOINT TEST C .
The power seat is inoperative - passenger, without power recliner	Fuse Seat control switch Circuitry	Go To PINPOINT TEST D .
The power seat moves but is loose	Fastening hardware Seat track	Go To PINPOINT TEST E .
The power seat moves but is noisy	Seat track	Go To PINPOINT TEST F .
The power seat does not make full travel	Seat track obstructed Seat track	Go To PINPOINT TEST G .
The power seat does not move horizontally/vertically/recline - driver	Seat track Circuitry Seat control switch Power seat motor	Go To PINPOINT TEST H .
The power seat does not move horizontally/vertically - driver	Seat track Circuitry Seat control switch Power seat motor	Go To PINPOINT TEST I .
The power seat does not move horizontally/vertically/recline - passenger	Seat track Circuitry Seat control switch Power seat motor	Go To PINPOINT TEST J .
The power seat does not move horizontally/vertically - passenger	Circuitry Seat track Seat control switch Power seat motor	Go To PINPOINT TEST K .
The memory seat is inoperative/does not operate correctly - does not operate horizontally/vertically/recline	Fuse Circuitry Seat control switch Seat track DSM Power seat motor	Go To PINPOINT TEST L .
The memory seat does not operate correctly - the seat moves in one second intervals	Circuitry Seat track DSM	REFER to the DRIVER SEAT MODULE (DSM) DTC CHART .
The memory seat does not operate correctly - does not operate using the memory SET switch	Circuitry Memory SET switch Seat track DSM	Go To PINPOINT TEST M .
The memory seat does not operate correctly - does not operate using the Remote Keyless Entry (RKE) transmitter	RKE transmitter is not correctly associated to a memory position Circuitry Keyless entry transmitter 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 exit/easy entry is inoperative/does not operating correctly	Circuitry Key in ignition switch Instrument Cluster (IC) DSM	Go To PINPOINT TEST N .
The power lumbar is inoperative - driver	Circuitry Seat control switch Power lumbar assembly	Go To PINPOINT TEST O .
The power lumbar is inoperative - passenger	Circuitry Lumbar control switch Power lumbar assembly	Go To PINPOINT TEST P .
All climate controlled seats are inoperative	Fuse Circuitry Medium Speed Controller Area Network (MSCAN) communication fault DCSM HVAC module	VERIFY BJB fuse 67 (40A) is OK. If not OK, REFER to the SYSTEM WIRING DIAGRAMS - EXPEDITION , SYSTEM WIRING DIAGRAMS - EXPEDITION EL , SYSTEM WIRING DIAGRAMS - NAVIGATOR or SYSTEM WIRING DIAGRAMS - NAVIGATOR L article to identify possible causes of the circuit short. TEST the system for normal operation. 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. 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 module 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 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 Q .
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), manifold or plenum Airflow blockage TED DCSM	CARRY OUT the DCSM self-test. 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, plenum, air ducts and foam pad) and REPAIR as needed. If OK, CHECK for airflow restrictions (TED inlets and outlets, TED -to-manifold or plenum 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 , manifold or plenum Airflow blockage Disconnected air duct	CARRY OUT the DCSM self-test. 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, plenum, air ducts and foam pad) and REPAIR as needed. If OK, CHECK for airflow restrictions (TED inlets and outlets, TED -to-manifold or plenum connections, filters and ducts) and REPAIR as needed. RETEST the system for normal operation.
A second row E-Z entry seat does not operate correctly - seat stuck in E-Z entry position	Incorrect shipping pin position	CHECK the shipping pin at the seat pedestal pivot is in the released position. REFER to SEAT - SECOND ROW, 40 PERCENT .
The heated seats are inoperative - rear	Fuse Circuitry Heated seat module	Go To PINPOINT TEST R .
The heated seat is inoperative - left rear	Fuse Circuitry Heated seat switch Seat cushion heater mat Seat backrest heater mat Heated seat module	Go To PINPOINT TEST S .
The heated seat is inoperative - right rear	Fuse Circuitry Heated seat switch Seat cushion heater mat Seat backrest heater mat Heated seat module	Go To PINPOINT TEST T .
The heated seat does not operate correctly - 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 U .
The heated seat does not operate correctly - 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 V .
The heated seat does not operate correctly - left rear heated seat indicator is always on	Wiring, terminals or connectors Heated seat module	Go To PINPOINT TEST W .
The heated seat does not operate correctly - right rear heated seat indicator is always on	Wiring, terminals or connectors Heated seat module	Go To PINPOINT TEST X .
The heated seats do not operate correctly - after a new heated seat module is installed	Heated seat module configuration	Operate one heated seat using the low button to configure the module. Refer to PRINCIPLES OF OPERATION or HEATED SEAT MODULE - SECOND ROW .
The power seat is inoperative - third row power-fold, left and right seats	Fuse(s) Circuitry SJB	Go To PINPOINT TEST Y .
The power seat is inoperative/does not operate correctly - third row power fold, left seat	Fuse(s) Circuitry Power-fold seat relay Seat control switch(es) Power-fold seat motor	Go To PINPOINT TEST Z .
The power seat is inoperative/does not operate correctly - third row power fold, right seat	Fuse(s) Circuitry Power-fold seat relay Seat control switch(es) Power-fold seat motor	Go To PINPOINT TEST AA .

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.