Multifunction Electronic Modules System — Lincoln Town Car III рестайлинг (2003-2011)

Module Controlled Functions

The vehicle is equipped with the following multifunction modules

Air suspension module
Driver door module (DDM)
Driver seat module (DSM)
Lighting control module (LCM)

Air Suspension Module

The air suspension module monitors the inputs and provides outputs and diagnostic information for the following systems

Vehicle dynamic suspension
Variable assist power steering (VAPS)

The air suspension module provides the instrument cluster with a ground circuit in order to illuminate the air suspension warning indicator in the instrument cluster and also receives door ajar information from the DDM. The air suspension module controls the VAPS actuator on the power steering gear which increases or decreases the power steering assist depending on the vehicle speed received on a dedicated vehicle speed circuit hardwired from the powertrain control module (PCM).

Driver Door Module (DDM)

The DDM monitors the inputs and provides outputs and diagnostic information for the following multiple vehicle systems

Power door locks
Power mirrors
Remote keyless entry (RKE) system

The DDM monitors all of the door ajar switches which are hardwired to the module. This door ajar information is sent to the air suspension module on a single hardwired circuit. Diagnostic information is retrieved from the DDM on the standard corporate protocol (SCP) communication network. The power door locks, power mirrors and the RKE system are all controlled by the DDM. If equipped with memory seats, the seat adjust switch provides inputs to the DDM, which sends this information to the DSM over the SCP network. If not equipped with a power luggage compartment lid, the DDM receives an input from the luggage compartment lid release switch and operates the luggage compartment lid release solenoid. If equipped with a power luggage compartment lid, the DDM sends a signal to the luggage compartment lid module, which will operate the luggage compartment lid release solenoid.

Driver Seat Module (DSM)

The DSM receives the seat adjust switch input information over the SCP network communication from the DDM and operates the seat motors to the desired position. The DSM monitors the seat position and adjustable pedal sensors to determine how long to operate each specific seat motor and adjustable pedal motor when the memory function is being commanded. The DSM is only on vehicles equipped with memory seats and memory adjustable pedals.

Lighting Control Module (LCM)

The LCM monitors the inputs and provides outputs and diagnostic information for the following multiple vehicle systems

Brake shift interlock
Exterior lighting
Interior lighting
Perimeter alarm

The LCM receives a voltage input from the brake pedal position switch and provides power to the brake shift interlock solenoid. For the exterior lighting, it receives inputs and provides outputs to control the exterior, interior (including the cluster and panel illumination) lighting systems on the vehicle. The perimeter alarm is controlled by the LCM, which receives inputs from the perimeter alarm switches and arms the alarm when commanded.

Rear Audio/Climate Control Module

The rear audio/climate control module monitors the inputs and provides information for the following multiple vehicle systems

Rear audio
Rear climate control

The rear audio/climate control module receives a variable resistance input from the rear audio/climate control switch to determine the level of rear audio volume, rear climate control temperature and fan speed.

Diagnostic Trouble Code (DTC) Chart

Note. Most powertrain (P-code) DTCs are diagnosed in the INTRODUCTION - GASOLINE ENGINES article . If the P-code retrieved is not listed below, refer to the INTRODUCTION - GASOLINE ENGINES article to continue diagnostics.

DTC	Description	Source	Action
B113A	Rear Audio Switch Stuck	Rear Audio/Climate Control Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
B113B	Rear Audio Switch Circuit Short to Ground	Rear Audio/Climate Control Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
B113C	Rear Audio Switch Circuit Short to Battery	Rear Audio/Climate Control Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
B113D	Rear Climate Control Switch Stuck	Rear Audio/Climate Control Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
B113E	Rear Climate Control Switch Circuit Short to Ground	Rear Audio/Climate Control Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
B113F	Rear Climate Control Switch Circuit Short to Battery	Rear Audio/Climate Control Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
B1148	Radio Frequency Power Output Circuit Short to Ground	Driver Door Module (DDM)	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
B1149	Radio Frequency Enable Output Circuit Short to Battery	DDM	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
B1150	Radio Frequency Enable Output Circuit Short to Ground	DDM	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
B1151	Radio Frequency AM/FM Signal Key Select Output Circuit Short to Ground	DDM	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
B1152	Radio Frequency AM/FM Signal Key Select Output Circuit Short to Battery	DDM	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
B1200	Climate Control Push-button Circuit Failure	Dual Automatic Temperature Control (DATC) Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
B1202	Fuel Sender Circuit Open	Instrument Cluster	REFER to INSTRUMENT CLUSTER article.
B1204	Fuel Sender Circuit Short to Ground	Instrument Cluster	REFER to INSTRUMENT CLUSTER article.
B1205	EIC Switch-1 Assembly Circuit Failure	Instrument Cluster	REFER to INFORMATION AND MESSAGE CENTER article.
B1206	EIC Switch-1 Assembly Circuit Open	Instrument Cluster	REFER to INFORMATION AND MESSAGE CENTER article.
B1208	EIC Switch-1 Assembly Circuit Short To Ground	Instrument Cluster	REFER to INFORMATION AND MESSAGE CENTER article.
B1209	EIC Switch-2 Assembly Circuit Failure	Instrument Cluster	REFER to INFORMATION AND MESSAGE CENTER article.
B1210	EIC Switch-2 Assembly Circuit Open	Instrument Cluster	REFER to INFORMATION AND MESSAGE CENTER article.
B1212	EIC Switch-2 Assembly Circuit Short To Ground	Instrument Cluster	REFER to INFORMATION AND MESSAGE CENTER article.
B1213	Anti-Theft Number of Programmed Keys is Below Minimum	Powertrain Control Module (PCM)	REFER to ANTI-THEFT - PATS article.
B1231	Event Threshold Exceeded	Restraints Control Module (RCM)	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B1242	Air Flow Recirculation Door Driver Circuit Failure	DATC Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
B1251	Air Temperature Internal Sensor Circuit Open	DATC Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
B1253	Air Temperature Internal Sensor Circuit Short To Ground	DATC Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
B1255	Air Temperature External Sensor Circuit Open	DATC Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
B1257	Air Temperature External Sensor Circuit Short To Ground	DATC Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
B1259	Solar Radiation Sensor Circuit Open	DATC Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
B1261	Solar Radiation Sensor Circuit Short to Ground	DATC Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
B1263	Servo Motor Vent Circuit Failure	DATC Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
B1264	Servo Motor Foot Circuit Failure	DATC Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
B1317	Battery Voltage High	Air Suspension Module	REFER to VEHICLE DYNAMIC SUSPENSION article.
B1317	Battery Voltage High	DDM	REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1317	Battery Voltage High	Instrument Cluster	REFER to INSTRUMENT CLUSTER article.
B1317	Battery Voltage High	Parking Aid Module	REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1317	Battery Voltage High	RCM	REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1318	Battery Voltage Low	Air Suspension Module	REFER to VEHICLE DYNAMIC SUSPENSION article.
B1318	Battery Voltage Low	DDM	REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1318	Battery Voltage Low	Instrument Cluster	REFER to INSTRUMENT CLUSTER article.
B1318	Battery Voltage Low	Parking Aid Module	REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1318	Battery Voltage Low	RCM	REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1322	Driver Door Ajar Circuit Short to Ground	DDM	REFER to INTERIOR LIGHTING article.
B1334	Decklid Ajar Rear Door Circuit Short to Ground	Lighting Control Module (LCM)	REFER to INTERIOR LIGHTING article.
B1342	ECU is Faulted	Air Suspension Module	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new air suspension module. REFER to VEHICLE DYNAMIC SUSPENSION article. REPEAT the self-test.
B1342	ECU is Faulted	Anti-Lock Brake System (ABS) Module	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new ABS module. REFER to VEHICLE DYNAMIC SYSTEMS article. REPEAT the self-test.
B1342	ECU is Faulted	Audio Control Module	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new audio control module. REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. REPEAT the self-test.
B1342	ECU is Faulted	DATC Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
B1342	ECU is Faulted	DDM	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new DDM. REFER to Driver Door Module (DDM) . REPEAT the self-test.
B1342	ECU is Faulted	Driver Seat Module (DSM)	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new DSM. REFER to Driver Seat Module (DSM) . REPEAT the self-test.
B1342	ECU is Faulted	Instrument Cluster	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER article. REPEAT the self-test.
B1342	ECU is Faulted	LCM	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new LCM. REFER to Lighting Control Module (LCM) . REPEAT the self-test.
B1342	ECU is Faulted	Luggage Compartment Lid Module	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new luggage compartment lid module. REFER to BODY CLOSURES article. REPEAT the self-test.
B1342	ECU is Faulted	Navigation Module	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new navigation module. REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. REPEAT the self-test.
B1342	ECU is Faulted	Parking Aid Module	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new parking aid module. REFER to PARKING AID article. REPEAT the self-test.
B1342	ECU is Faulted	RCM	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new RCM. REFER to SUPPLEMENTAL RESTRAINT SYSTEM article. REPEAT the self-test.
B1342	ECU is Faulted	Rear Audio/Climate Control Module	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new rear audio/climate control module. REFER to Rear Audio/Climate Control Module . REPEAT the self-test.
B1345	Heated Backlite Input Circuit Short to Ground	DDM	REFER to GLASS, FRAMES AND MECHANISMS article.
B1349	Heated Backlite Relay Short to Battery	DDM	REFER to GLASS, FRAMES AND MECHANISMS article.
B1352	Ignition Key-In Circuit Failure	LCM	REFER to WARNING DEVICES article.
B1359	Ignition Run/Acc Circuit Failure	LCM	REFER to STEERING COLUMN SWITCHES article.
B1359	Ignition Run/Acc Circuit Failure	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B1396	Power Door Lock Circuit Short to Battery	DDM	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
B1397	Power Door Unlock Circuit Short to Battery	DDM	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
B1449	Wiper Park Sense Circuit Short to Ground	LCM	REFER to EXTERIOR LIGHTING article.
B1472	Lamp Headlamp Input Circuit Short To Ground	LCM	REFER to EXTERIOR LIGHTING article.
B1484	Brake Pedal Input Open Circuit	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
B1485	Brake Pedal Input Short to Battery	LCM	REFER to EXTERIOR LIGHTING article.
B1520	Hood Switch Circuit Open	LCM	REFER to ANTI-THEFT - PERIMETER article.
B1529	Memory Set Switch Circuit Short to Battery	DDM	REFER to SEATING article.
B1533	Memory 1 Switch Circuit Short to Battery	DDM	REFER to SEATING article.
B1537	Memory 2 Switch Circuit Short to Battery	DDM	REFER to SEATING article.
B1551	Latch/Deck Lid Release Circuit Failure	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B1553	Decklid Release Circuit Short to Battery	DDM	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
B1555	Ignition Run/Start Circuit Failure	LCM	REFER to STEERING COLUMN SWITCHES article.
B1566	Door Ajar Circuit Short to Ground	Air Suspension Module	REFER to VEHICLE DYNAMIC SUSPENSION article.
B1566	Door Ajar Circuit Short to Ground	DDM	REFER to INTERIOR LIGHTING article.
B1570	Lamp Headlamp High-Beam Circuit Short to Ground	LCM	REFER to EXTERIOR LIGHTING article.
B1578	Lamp Park Input Circuit Short to Ground	LCM	REFER to EXTERIOR LIGHTING article.
B1600	PATS Ignition Key Transponder Signal is Not Received	PCM	REFER to ANTI-THEFT - PATS article.
B1601	PATS Received Incorrect Key-Code From Ignition Key Transponder	PCM	REFER to ANTI-THEFT - PATS article.
B1602	PATS Received Invalid Format of Key-Code From Ignition Key Transponder	PCM	REFER to ANTI-THEFT - PATS article.
B1627	PRNDL Reverse Input Circuit Failure	Parking Aid Module	REFER to PARKING AID article.
B1663	Seat Driver Front Up/Down Motor Stalled	DSM	REFER to SEATING article.
B1664	Seat Driver Rear Up/Down Motor Stalled	DSM	REFER to SEATING article.
B1665	Seat Driver Forward/Backward Motor Stalled	DSM	REFER to SEATING article.
B1666	Seat Driver Recline Motor Stalled	DSM	REFER to SEATING article.
B1667	Mirror Driver Up/Down Motor Stalled	DSM	REFER to REAR VIEW MIRRORS article.
B1668	Mirror Driver Right/Left Motor Stalled	DSM	REFER to REAR VIEW MIRRORS article.
B1669	Mirror Passenger Up/Down Motor Stalled	DSM	REFER to REAR VIEW MIRRORS article.
B1670	Mirror Passenger Right/Left Motor Stalled	DSM	REFER to REAR VIEW MIRRORS article.
B1676	Battery Pack Voltage Out of Range	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
B1676	Battery Pack Voltage Out of Range	DSM	REFER to SEATING article.
B1676	Battery Pack Voltage Out of Range	DATC Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
B1676	Battery Pack Voltage Out of Range	LCM	REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
B1681	PATS Transceiver Module Signal is Not Received	PCM	REFER to ANTI-THEFT - PATS article.
B1688	Lamp Dome Input Circuit Short to Ground	LCM	REFER to INTERIOR LIGHTING article.
B1696	Autolamp On Circuit Short to Ground	LCM	REFER to EXTERIOR LIGHTING article.
B1869	Lamp Air Bag Warning Indicator Circuit Open	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B1870	Lamp Air Bag Warning Indicator Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B1873	Turn Signal / Hazard Power Feed Circuit Short to Ground	LCM	REFER to EXTERIOR LIGHTING article.
B1884	PAD Warning Lamp Circuit Failure	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B1890	PAD Warning Lamp Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B1891	Air Bag Tone Warning Indicator Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B1892	Air Bag Tone Warning Indicator Circuit Failure	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B1921	Air Bag Diagnostic Monitor Ground Circuit Open	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B1950	Seat Rear Up/Down Position Feedback Circuit Failure	DSM	REFER to SEATING article.
B1953	Seat Rear Up/Down Position Feedback Circuit Short to Ground	DSM	REFER to SEATING article.
B1954	Seat Front Up/Down Position Feedback Circuit Failure	DSM	REFER to SEATING article.
B1957	Seat Front Up/Down Position Feedback Circuit Short to Ground	DSM	REFER to SEATING article.
B1958	Seat Recline Forward/Backward Position Feedback Circuit Failure	DSM	REFER to SEATING article.
B1961	Seat Recline Forward/Backward Position Feedback Circuit Short to Ground	DSM	REFER to SEATING article.
B1962	Seat Horizontal Forward/Rearward Position Feedback Circuit Failure	DSM	REFER to SEATING article.
B1965	Seat Horizontal Forward/Rearward Position Feedback Circuit Short to Ground	DSM	REFER to SEATING article.
B1987	Pedal Forward/Rearward Motor Stalled	DSM	REFER to BRAKE SYSTEM - GENERAL INFORMATION article.
B1988	Pedal Position Forward Switch Circuit Short to Battery	DSM	REFER to BRAKE SYSTEM - GENERAL INFORMATION article.
B1989	Pedal Position Rearward Switch Circuit Short to Battery	DSM	REFER to BRAKE SYSTEM - GENERAL INFORMATION article.
B1990	Pedal Forward / Rearward Potentiometer Feedback Circuit Failure	DSM	REFER to BRAKE SYSTEM - GENERAL INFORMATION article.
B2097	Compass Module Failure	Instrument Cluster	REFER to INFORMATION AND MESSAGE CENTER article.
B2100	Door Driver Key Cylinder Switch Failure	LCM	REFER to ANTI-THEFT - PERIMETER article.
B2103	Antenna Not Connected	Audio Control Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
B2103	Antenna Not Connected	Navigation Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
B2103	Antenna Not Connected	PCM	REFER to ANTI-THEFT - PATS article.
B2108	Trunk Key Cylinder Switch Failure	LCM	REFER to ANTI-THEFT - PERIMETER article.
B2139	Data Mismatch (Receive Data Does Not Match Was Expected)	Navigation Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
B2143	NVM Memory Failure	Instrument Cluster	REFER to INSTRUMENT CLUSTER article.
B2147	Driver Seat Switch Fault	DDM	REFER to SEATING article.
B2204	GPS Antenna Connection Open or Short	Navigation Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
B2208	Navigation to Head Unit Communication Error	Navigation Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
B2212	Panel Dim Switch Out of Range	LCM	REFER to INSTRUMENT CLUSTER AND PANEL ILLUMINATION article.
B2266	Left Side Blend Door Circuit Failure	DATC Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
B2267	Right Side Blend Door Circuit Failure	DATC Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
B2268	Steering Wheel Climate Control Circuit Open	DATC Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
B2269	Steering Wheel Climate Control Circuit Short to Ground	DATC Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
B2275	Pedal Forward/Rearward Pot. Feedback Ckt. Short to GND	DSM	REFER to BRAKE SYSTEM - GENERAL INFORMATION article.
B2276	Less Than 2 Transmitters Programmed	DDM	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
B2290	Occupant Classification System Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2292	Restraint System - Seatbelt Pretensioner Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2293	Restraint System - Airbag Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2295	Restraint System - Side Airbag Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2296	Restraint System - Impact Sensor Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2312	Mirror Passenger Horizontal Feedback Potentiometer Circuit Failure	DSM	REFER to REAR VIEW MIRRORS article.
B2315	Mirror Passenger Horizontal Feedback Potentiometer Circuit Short to Ground	DSM	REFER to REAR VIEW MIRRORS article.
B2316	Mirror Passenger Vertical Feedback Potentiometer Circuit Failure	DSM	REFER to REAR VIEW MIRRORS article.
B2319	Mirror Passenger Vertical Feedback Potentiometer Circuit Short to Ground	DSM	REFER to REAR VIEW MIRRORS article.
B2320	Mirror Driver Horizontal Feedback Potentiometer Circuit Failure	DSM	REFER to REAR VIEW MIRRORS article.
B2323	Mirror Driver Horizontal Feedback Potentiometer Circuit Short to Ground	DSM	REFER to REAR VIEW MIRRORS article.
B2324	Mirror Driver Vertical Feedback Potentiometer Circuit Failure	DSM	REFER to REAR VIEW MIRRORS article.
B2327	Mirror Driver Vertical Feedback Potentiometer Circuit Short to Ground	DSM	REFER to REAR VIEW MIRRORS article.
B2336	Mirror Switch Assembly Circuit Failure	DDM	REFER to REAR VIEW MIRRORS article.
B2373	LED #1 Circuit Short to Battery	DDM	REFER to SEATING article.
B2401	Audio Tape Deck Mechanism Fault	Audio Control Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
B2403	Audio CD/DJ Internal Fault	Audio Control Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
B2403	Audio CD/DJ Internal Fault	Navigation Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
B2404	Audio Steering Wheel Switch Circuit Fault	Navigation Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
B2405	Audio Disc CD Player Thermal Shutdown Fault	Audio Control Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
B2406	Audio Disc CD Player Internal Fault	Audio Control Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
B2418	Sensor Power Short to Ground	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2419	Sensor 1 Invalid	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2420	Sensor 2 Invalid	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2421	VSS Stuck High	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2425	Remote Keyless Entry Out of Synchronization	DDM	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
B2432	Drivers Seat Belt Buckle Switch Circuit Open	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2433	Drivers Seat Belt Buckle Switch Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2434	Drivers Seat Belt Buckle Switch Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2435	Drivers Seat Belt Buckle Switch Resistance Out of Range	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2436	Passengers Seat Belt Buckle Switch Circuit Open	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2437	Passengers Seat Belt Buckle Switch Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2438	Passengers Seat Belt Buckle Switch Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2439	Passengers Seat Belt Buckle Switch Resistance Out of Range	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2477	Module Configuration Failure	Air Suspension Module	REFER to MODULE CONFIGURATION article.
B2477	Module Configuration Failure	Audio Control Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
B2477	Module Configuration Failure	DATC Module	REFER to MODULE CONFIGURATION article.
B2477	Module Configuration Failure	DDM	REFER to MODULE CONFIGURATION article.
B2477	Module Configuration Failure	Instrument Cluster	REFER to MODULE CONFIGURATION article.
B2477	Module Configuration Failure	LCM	REFER to MODULE CONFIGURATION article.
B2477	Module Configuration Failure	Navigation Module	REFER to MODULE CONFIGURATION article.
B2477	Module Configuration Failure	RCM	REFER to MODULE CONFIGURATION article.
B2477	Module Configuration Failure	Rear Audio/Climate Control Module	REFER to MODULE CONFIGURATION article.
B2522	VBatt 1 Circuit Failure	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2552	Vbatt 2 Circuit Open	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2633	Driver-Front Microphone Circuit Failure	Navigation Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
B2695	Keypad_A Switch Circuit Failure	DDM	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
B2696	Keypad_B Switch Circuit Failure	DDM	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
B2697	Keypad_C Switch Circuit Failure	DDM	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
B2698	Vbatt 2 Circuit Failure	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2703	Open/Close Switch Stuck Active	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2718	Liftgate/Decklid Ajar Output Short to Battery	DDM	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
B2718	Liftgate/Decklid Ajar Output Short to Battery	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2721	Liftgate/Decklid Ajar Output Short to Ground or Open	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2748	Left Drive Motor Open Circuit	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2755	Left Drive Short to Battery	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2757	Left Drive Output Short to Ground	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2792	Cross Link Between Firing Loops	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2825	Movement Ceased Due To Excessive Speed Deviation	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2858	SDARS Module is Defective	Navigation Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
B2876	Striker Drive Motor Short to Battery	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2877	Striker Drive Output Short to Ground	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2905	Striker Drive Motor Open Circuit	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2906	Striker Up Switch Input Invalid	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2907	Striker Down Switch Input Invalid	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2908	Latch Switch Invalid	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2909	Belt Tension Sensor Fault	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2910	Striker Up / Striker Down Switch Mismatch	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
B2913	Audio Subwoofer Not Connected	Navigation Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
B2913	Audio Subwoofer Not Connected	Audio Control Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
B2984	Deployable Steering Column Circuit Open	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2985	Deployable Steering Column Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2986	Deployable Steering Column Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
B2987	Deployable Steering Column Circuit Resistance Low on Squib	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
C1123	Vehicle Speed Sensor Input Short to Battery	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
C1131	Clutch Circuit Failure	Luggage Compartment Lid Module	REFER to BODY CLOSURES article.
C1145	Speed Wheel Sensor RF Input Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1155	Speed Wheel Sensor LF Input Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1165	Speed Wheel Sensor RR Input Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1175	Speed Wheel Sensor LR Input Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1192	Speed Wheel Sensor RF Input Short Circuit to Battery	Navigation Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
C1222	Speed Wheel Mismatch	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1266	ABS Valve Power Relay Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1296	Wheel Speed LF Signal Fault	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1297	Wheel Speed RF Signal Fault	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1298	Wheel Speed RR Signal Fault	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1299	Wheel Speed LR Signal Fault	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1300	ABS Pump Motor Circuit Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1414	Incorrect Module Design Level	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
C1445	Speed Vehicle Signal Circuit Failure	Air Suspension Module	REFER to VEHICLE DYNAMIC SUSPENSION article.
C1724	Air Suspension Height Sensor Power Circuit Failure	Air Suspension Module	REFER to VEHICLE DYNAMIC SUSPENSION article.
C1726	Air Suspension Rear Pneumatic Failure	Air Suspension Module	REFER to VEHICLE DYNAMIC SUSPENSION article.
C1742	Rear Sounder Circuit Failure	Parking Aid Module	REFER to PARKING AID article.
C1743	Rear Sounder Circuit Short to Vbatt	Parking Aid Module	REFER to PARKING AID article.
C1760	Air Suspension Rear Height Sensor High (SE) Signal Circuit Failure	Air Suspension Module	REFER to VEHICLE DYNAMIC SUSPENSION article.
C1770	Air Suspension Vent Solenoid Output Circuit Failure	Air Suspension Module	REFER to VEHICLE DYNAMIC SUSPENSION article.
C1790	Air Suspension LR Air Spring/Shock Solenoid Output Circuit Failure	Air Suspension Module	REFER to VEHICLE DYNAMIC SUSPENSION article.
C1795	Air Suspension RR Air Spring/Shock Solenoid Output Circuit Failure	Air Suspension Module	REFER to VEHICLE DYNAMIC SUSPENSION article.
C1805	Mismatched PCM and/or ABS-TC Module	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
C1830	Air Suspension Compressor Relay Circuit Failure	Air Suspension Module	REFER to VEHICLE DYNAMIC SUSPENSION article.
C1840	Air Suspension Disable Switch Circuit Failure	Air Suspension Module	REFER to VEHICLE DYNAMIC SUSPENSION article.
C1897	Steering VAPS II Circuit Loop Failure	Air Suspension Module	REFER to STEERING SYSTEM - GENERAL INFORMATION article.
C1920	LED #1 Circuit Failure	DDM	REFER to SEATING article.
C1946	Front Driver's Seat Track Position Switch Circuit Open	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
C1947	Front Driver's Seat Track Position Switch Circuit Short to Ground	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
C1948	Front Driver's Seat Track Position Switch Circuit Resistance Out of Range	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
C1964	Air Suspension Air Compressor Request Exceeded Max Timing	Air Suspension Module	REFER to VEHICLE DYNAMIC SUSPENSION article.
C1976	Audio Steering Wheel Switch Circuit - Open Circuit	Audio Control Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
C1977	Audio Steering Wheel Switch Circuit Short to GND	Audio Control Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
C1982	Front Driver's Seat Track Position Switch Circuit Short to Battery	RCM	REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
C1985	Back-up Aid Disable Switch Stuck Low	Parking Aid Module	REFER to PARKING AID article.
C2201	Front Passenger's Seat Track Position Switch Circuit Open	RCM	REFER to SEATING article.
C2202	Front Passenger's Seat Track Position Switch Circuit Short to Ground	RCM	REFER to SEATING article.
C2203	Front Passenger's Seat Track Position Switch Circuit Short to Battery	RCM	REFER to SEATING article.
C2204	Front Passenger's Seat Track Position Switch Circuit Resistance Out of Range	RCM	REFER to SEATING article.
C2775	TC/AYC ON/OFF Switch Stuck Failure	ABS Module	REFER to VEHICLE DYNAMIC SYSTEMS article.
P0622	Generator Field Terminal Circuit	Powertrain Control Module (PCM)	REFER to CHARGING SYSTEM - GENERAL INFORMATION article.
P1260	Theft Detected, Vehicle Immobilized	PCM	REFER to ANTI-THEFT - PATS article.
PXXXX	All other DTCs	PCM	REFER to the Introduction - Gasoline Engines article.
U0002	High Speed CAN Communication Bus Performance	Instrument Cluster	DISREGARD the DTC. REPAIR all other DTCs. CLEAR the DTCs. REPEAT the self-test.
U0073	Control Module Communication Bus A Off	ABS Module	REFER to MODULE COMMUNICATIONS NETWORK article.
U0184	Lost Communication With Radio (ACM)	Rear Audio/Climate Control Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
U1016	SCP (J1850) Invalid or Missing Data for Primary Id $10	Navigation Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
U1026	SCP (J1850) Invalid or Missing Data for Engine RPM	Air Suspension Module	REFER to VEHICLE DYNAMIC SUSPENSION article.
U1040	SCP (J1850) Invalid or Missing Data for Vehicle Speed	DATC Module	REFER to the CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
U1041	SCP (J1850) Invalid or Missing Data for Vehicle Speed	DDM	REPAIR all other DTCs. CLEAR the DTCs. REPEAT the self-test.
U1041	SCP (J1850) Invalid or Missing Data for Vehicle Speed	LCM	REPAIR all other DTCs. CLEAR the DTCs. REPEAT the self-test.
U1059	SCP (J1850) Invalid or Missing Data for Transmission / Transaxle / PRNDL	DDM	REPAIR all other DTCs. CLEAR the DTCs. REPEAT the self-test.
U1059	SCP (J1850) Invalid or Missing Data for Transmission / Transaxle / PRNDL	LCM	REPAIR all other DTCs. CLEAR the DTCs. REPEAT the self-test.
U1073	SCP (J1850) Invalid or Missing Data for Engine Coolant	DATC Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
U1112	SCP (J1850) Invalid or Missing Data for Primary Id $70	DATC Module	REFER to INSTRUMENT CLUSTER AND PANEL ILLUMINATION article.
U1123	SCP (J1850) Invalid or Missing Data for Odometer	Air Suspension Module	REFER to VEHICLE DYNAMIC SUSPENSION article.
U1135	SCP (J1850) Invalid or Missing Data for Ignition Switch / Starter	DDM	REPAIR all other DTCs. CLEAR the DTCs. REPEAT the self-test.
U1178	SCP (J1850) Invalid or Missing Data for Climate Control (HVAC)	Rear Audio/Climate Control Module	REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
U1197	SCP (J1850) Invalid or Missing Data for Door Locks	LCM	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
U1199	SCP (J1850) Invalid or Missing Data for External Access (Doors)	LCM	REFER to INTERIOR LIGHTING article.
U1262	SCP (J1850) Communication Bus Fault	Instrument Cluster	REPAIR all other DTCs first. CLEAR the DTCs. CYCLE the key OFF then ON and wait 10 seconds. REPEAT the self-test. If DTC U1262 is still present, REFER to MODULE COMMUNICATIONS NETWORK article.
U1900	CAN Communication Bus Fault - Receive Error	ABS Module	REFER to MODULE COMMUNICATIONS NETWORK article.
U1900	CAN Communication Bus Fault - Receive Error	Instrument Cluster	REFER to MODULE COMMUNICATIONS NETWORK article.
U2003	Audio Compact Disk / Disk Jockey Unit is Not Responding	Navigation Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
U2005	Audio Rear Integrated Control Panel Unit / RDM is Not Responding	Navigation Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
U2008	Audio Phone is Not Responding	Navigation Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
U2013	Compass Module is not Responding	Instrument Cluster	REFER to INFORMATION AND MESSAGE CENTER article.
U2023	Fault Received From External Node	ABS Module	RETRIEVE and FOLLOW non-network DTCs from other modules.
U2023	Fault Received From External Node	Instrument Cluster	RETRIEVE and FOLLOW non-network DTCs from other modules.
U2024	Audio Redundant Steering Wheel Control Not Responding	Navigation Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
U2026	Family Entertainment System is Not Responding	Navigation Module	REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article.
U2050	No Application Present	DDM	REFER to MODULE CONFIGURATION article.
U2050	No Application Present	Instrument Cluster	REFER to MODULE CONFIGURATION article.

DIAGNOSTIC TROUBLE CODE (DTC) INDEX

Special Tools Illustration Tool Name Tool Number 73III Automotive Meter 105-R0057 or equivalent Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool Flex Probe Kit 105-R025C or equivalent

Scheme 59

Scheme 59: Air Suspension Module

Principles of Operation

The air suspension module uses the standard corporate protocol (SCP) communication network to provide diagnostic information through the data link connector (DLC). The air suspension module monitors the inputs and controls the outputs of the air suspension system and also operates the variable assist power steering (VAPS) actuator.

The air suspension module provides the instrument cluster with a ground circuit in order to illuminate the air suspension warning indicator in the instrument cluster and also receives door ajar information from the driver door module (DDM). The door ajar information is necessary for the air suspension module to determine the vehicle may need a trim height adjustment.

The air suspension module also controls the VAPS actuator on the power steering gear which increases or decreases the power steering assist depending on the speed of the vehicle. The module receives the vehicle speed on a dedicated vehicle speed circuit hardwired from the powertrain control module (PCM) to the air suspension module.

Inspection and Verification

Verify the customer concern.
Visually inspect the following for obvious signs of electrical damage. VISUAL INSPECTION CHART Electrical Battery junction box (BJB) fuse 13 (10A) Central junction box (CJB) fuse 13 (10A) Circuitry Air suspension module
If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
If the cause is not visually evident, connect the scan tool to the data link connector (DLC).
If the scan tool does not communicate with the VCM: Check the VCM connection to the vehicle. Check the scan tool connection to the VCM. Refer to «MODULE COMMUNICATIONS NETWORK»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#module-communications-network-system) article, No Power To The Scan Tool, to diagnose no communication with the scan tool.
If the scan tool does not communicate with the vehicle: Verify the ignition key is in the ON position. Verify the scan tool operation with a known good vehicle. Refer to «MODULE COMMUNICATIONS NETWORK»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#module-communications-network-system) article to diagnose no response from the powertrain control module (PCM).
Carry out the network test: If the scan tool responds with no communication for one or more modules, refer to «MODULE COMMUNICATIONS NETWORK»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#module-communications-network-system) article. If the network test passes, retrieve and record the continuous memory DTCs.
Clear the continuous DTCs and carry out the self-test diagnostics for the air suspension module.
If the DTCs retrieved are related to the concern, go to the «Diagnostic Trouble Code (DTC) Chart»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#multifunction-electronic-modules-system__diagnostic-trouble-code-dtc-chart) .
If no DTCs related to the concern are retrieved, go to «Symptom Chart»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#multifunction-electronic-modules-system) .

Symptom Chart

Condition	Possible Sources	Action
No communication with the air suspension module	Fuse(s) Circuitry Air suspension module	REFER to MODULE COMMUNICATIONS NETWORK article.

Symptom Chart

The DDM monitors all of the door ajar switches which are hardwired to the module. This door ajar information is sent to the air suspension module on a single hardwired circuit and is also communicated to other modules using the standard corporate protocol (SCP) communication network. Diagnostic information is retrieved from the DDM on the SCP network. The power door locks, power mirrors and the remote keyless entry (RKE) system are all controlled by the DDM. If equipped with memory seats, the seat adjust switch provides inputs to the DDM, which sends this information to the driver seat module (DSM) over the SCP network. If the vehicle is not equipped with a power luggage compartment lid, the DDM receives an input from the luggage compartment lid release switch and operates the luggage compartment lid release solenoid. If the vehicle is equipped with a power luggage compartment lid, the DDM sends a signal to the luggage compartment lid module, which will operate the luggage compartment lid release solenoid.

Verify the customer concern.
Visually inspect the following for obvious signs of electrical damage. VISUAL INSPECTION CHART Electrical Battery junction box (BJB) fuse 8 (20A) Central junction box (CJB) fuse 19 (7.5A) Circuitry
If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
If the cause is not visually evident, connect the scan tool to the data link connector (DLC).
If the scan tool does not communicate with the VCM: Check the VCM connection to the vehicle. Check the scan tool connection to the VCM. Refer to «MODULE COMMUNICATIONS NETWORK»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#module-communications-network-system) article, No Power To The Scan Tool, to diagnose no communication with the scan tool.
If the scan tool does not communicate with the vehicle: Verify the ignition key is in the ON position. Verify the scan tool operation with a known good vehicle. Refer to «MODULE COMMUNICATIONS NETWORK»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#module-communications-network-system) article to diagnose no response from the powertrain control module (PCM).
Carry out the network test: If the scan tool responds with no communication for one or more modules, refer to «MODULE COMMUNICATIONS NETWORK»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#module-communications-network-system) article. If the network test passes, retrieve and record the continuous memory DTCs.
Clear the continuous DTCs and carry out the self-test diagnostics for the DDM.
If the DTCs retrieved are related to the concern, go to the «Diagnostic Trouble Code (DTC) Chart»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#multifunction-electronic-modules-system__diagnostic-trouble-code-dtc-chart) .
If no DTCs related to the concern are retrieved, go to «Symptom Chart»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#multifunction-electronic-modules-system) .

Condition	Possible Sources	Action
No communication with the driver door module (DDM)	Fuse Circuitry DDM	REFER to MODULE COMMUNICATIONS NETWORK article.

Symptom Chart

The DSM receives the seat adjust switch input information over the standard corporate protocol (SCP) network communication from the driver door module (DDM) and operates the seat motors to the desired position. The DSM monitors the seat position and adjustable pedal sensors to determine how long to operate each specific seat motor and adjustable pedal motor when the memory function is being commanded. The DSM is only on vehicles equipped with memory seats and memory adjustable pedals.

Verify the customer concern.
Visually inspect the following for obvious signs of electrical damage. VISUAL INSPECTION CHART Electrical Battery junction box (BJB) fuse 8 (20A) Central junction box (CJB) fuse 19 (7.5A) Circuitry Driver seat module (DSM)
If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
If the cause is not visually evident, connect the scan tool to the data link connector (DLC).
If the scan tool does not communicate with the VCM: Check the VCM connection to the vehicle. Check the scan tool connection to the VCM. Refer to «MODULE COMMUNICATIONS NETWORK»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#module-communications-network-system) article, No Power To The Scan Tool, to diagnose no communication with the scan tool.
If the scan tool does not communicate with the vehicle: Verify the ignition key is in the ON position. Verify the scan tool operation with a known good vehicle. Refer to «MODULE COMMUNICATIONS NETWORK»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#module-communications-network-system) article to diagnose no response from the powertrain control module (PCM).
Carry out the network test: If the scan tool responds with no communication for one or more modules, refer to «MODULE COMMUNICATIONS NETWORK»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#module-communications-network-system) article. If the network test passes, retrieve and record the continuous memory DTCs.
Clear the continuous DTCs and carry out the self-test diagnostics for the DSM.
If the DTCs retrieved are related to the concern, go to the «Diagnostic Trouble Code (DTC) Chart»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#multifunction-electronic-modules-system__diagnostic-trouble-code-dtc-chart) .
If no DTCs related to the concern are retrieved, go to «Symptom Chart»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#multifunction-electronic-modules-system) .

Condition	Possible Sources	Action
No communication with the driver seat module (DSM)	Fuse Circuitry DSM	REFER to MODULE COMMUNICATIONS NETWORK article.

Symptom Chart

The LCM receives a voltage input from the brake pedal position (BPP) switch and provides power to the brake shift interlock solenoid, in order to allow the driver to shift the vehicle out of PARK. For the lighting, it receives inputs and provides outputs to control the exterior and interior (including the cluster and panel illumination) lighting systems on the vehicle. The perimeter alarm is controlled by the LCM, which receives inputs from the perimeter alarm switches and arms the alarm when commanded.

Verify the customer concern.
Visually inspect the following for obvious signs of electrical damage. VISUAL INSPECTION CHART Electrical Central junction box (CJB) fuses: 5 (7.5A) 8 (10A) 18 (15A) 20 (10A) 21 (10A) 22 (10A) 23 (10A) 24 (15A) 26 (15A) Circuitry Lighting control module (LCM)
If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
If the cause is not visually evident, connect the scan tool to the data link connector (DLC).
If the scan tool does not communicate with the VCM: Check the VCM connection to the vehicle. Check the scan tool connection to the VCM. Refer to «MODULE COMMUNICATIONS NETWORK»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#module-communications-network-system) article, No Power To The Scan Tool, to diagnose no communication with the scan tool.
If the scan tool does not communicate with the vehicle: Verify the ignition key is in the ON position. Verify the scan tool operation with a known good vehicle. Refer to «MODULE COMMUNICATIONS NETWORK»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#module-communications-network-system) article to diagnose no response from the powertrain control module (PCM).
Carry out the network test: If the scan tool responds with no communication for one or more modules, refer to «MODULE COMMUNICATIONS NETWORK»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#module-communications-network-system) article. If the network test passes, retrieve and record the continuous memory DTCs.
Clear the continuous DTCs and carry out the self-test diagnostics for the LCM.
If the DTCs retrieved are related to the concern, go to the «Diagnostic Trouble Code (DTC) Chart»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#multifunction-electronic-modules-system__diagnostic-trouble-code-dtc-chart) .
If no DTCs related to the concern are retrieved, go to «Symptom Chart»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#multifunction-electronic-modules-system) .

Condition	Possible Sources	Action
No communication with the lighting control module (LCM)	Fuse Circuitry LCM	REFER to MODULE COMMUNICATIONS NETWORK article.

Symptom Chart

The rear audio/climate control module is connected on the standard corporate protocol (SCP) communication network. The rear audio/climate control module receives an input (by using several variable resistors) from the rear audio/climate control switch to determine the level of rear audio volume, rear climate control temperature and fan speed.

Verify the customer concern.
Visually inspect the following for obvious signs of electrical damage. VISUAL INSPECTION CHART Electrical Battery junction box (BJB) fuse 23 (10A) Circuitry Rear audio/climate control module
If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
If the cause is not visually evident, connect the scan tool to the data link connector (DLC).
If the scan tool does not communicate with the VCM: Check the VCM connection to the vehicle. Check the scan tool connection to the VCM. Refer to «MODULE COMMUNICATIONS NETWORK»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#module-communications-network-system) article, No Power To The Scan Tool, to diagnose no communication with the scan tool.
If the scan tool does not communicate with the vehicle: Verify the ignition key is in the ON position. Verify the scan tool operation with a known good vehicle. Refer to «MODULE COMMUNICATIONS NETWORK»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#module-communications-network-system) article to diagnose no response from the powertrain control module (PCM).
Carry out the network test: If the scan tool responds with no communication for one or more modules, refer to «MODULE COMMUNICATIONS NETWORK»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#module-communications-network-system) article. If the network test passes, retrieve and record the continuous memory DTCs.
Clear the continuous DTCs and carry out the self-test diagnostics for the rear audio/climate control module.
If the DTCs retrieved are related to the concern, go to the «Diagnostic Trouble Code (DTC) Chart»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#multifunction-electronic-modules-system__diagnostic-trouble-code-dtc-chart) .
If no DTCs related to the concern are retrieved, go to «Symptom Chart»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#multifunction-electronic-modules-system) .

Condition	Possible Sources	Action
No communication with the rear audio/climate control module	Fuse Circuitry Rear audio/climate control module	REFER to MODULE COMMUNICATIONS NETWORK article.

Symptom Chart

Scheme 60

Scheme 60: Air Suspension Module

Item	Part Number	Description
1		Air suspension module electrical connectors (part of 14A005)
2	3C142	Air suspension module

REMOVAL AND INSTALLATION

Note. Prior to removal of the module, it is necessary to upload the module configuration information to a scan tool. This information needs to be downloaded into the new module once installed. For additional information, refer to MODULE CONFIGURATION article.

Remove the 2 pin-type retainers from the instrument panel lower insulator and position the insulator aside.
Disconnect the power point electrical connector, the footwell lamp and remove the panel.
Disconnect the air suspension module electrical connectors.
Release the spring clips to remove the module from the bracket.
To install, reverse the removal procedure.

Scheme 61

Scheme 61: Driver Door Module (DDM)

Item	Part Number	Description
1		DDM electrical connectors (part of 14A005)
2	56910	DDM bolt
3	13C791	DDM

REMOVAL

Upload the module configuration information from the DDM. For additional information, refer to «MODULE CONFIGURATION»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#module-configuration-system) article.
Disconnect the battery. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/lincoln/town-car/iii-2003-2011/remont/body-electrical/#battery-mounting-and-cables) article.
Remove the driver door trim panel. For additional information, refer to «INTERIOR TRIM AND ORNAMENTATION»(/lincoln/town-car/iii-2003-2011/remont/exteriorinterior-trim/#interior-trim-and-ornamentation) article.
Disconnect the electrical connectors.
Remove the bolt and the DDM.

INSTALLATION

Install the DDM. Install the bolt. Connect the electrical connectors.
Install the driver door trim panel. For additional information, refer to «INTERIOR TRIM AND ORNAMENTATION»(/lincoln/town-car/iii-2003-2011/remont/exteriorinterior-trim/#interior-trim-and-ornamentation) article.
Connect the battery. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/lincoln/town-car/iii-2003-2011/remont/body-electrical/#battery-mounting-and-cables) article.
Download the module configuration information from the scan tool into the new module. For additional information, refer to «MODULE CONFIGURATION»(/lincoln/town-car/iii-2003-2011/remont/communication-devices/#module-configuration-system) article.

Scheme 62

Scheme 62: Driver Seat Module (DSM)

Item	Part Number	Description
1		DSM electrical connectors (part of 14A005)
2		DSM screws (2 required)
3	13C789	DSM

Remove the driver seat. For additional information, refer to «SEATING»(/lincoln/town-car/iii-2003-2011/remont/seats/#seat-system) article.
Remove the 2 screws.
Disconnect the electrical connectors.
Remove the DSM from the seat bracket.
To install, reverse the removal procedure.

Scheme 63

Scheme 63: Lighting Control Module (LCM)

Item	Part Number	Description
1		LCM screws (2 required)
2		LCM electrical connectors (part of 14401)
3	13C788	LCM

Note. Prior to removal of the module, it is necessary to upload module configuration information to a scan tool. This information needs to be downloaded into the new module once installed. For additional information, refer to MODULE CONFIGURATION article.

Remove the pin-type retainers and position the LH instrument panel lower insulator aside.
Disconnect the courtesy lamp and remove the LH instrument panel lower insulator.
Remove the accelerator pedal. For additional information, refer to «ACCELERATION CONTROL»(/lincoln/town-car/iii-2003-2011/remont/engine-control-systems/#acceleration-control-system) article.
Remove the 2 screws and position the LCM aside.
Release the locking tabs, disconnect the electrical connectors and remove the LCM.
To install, reverse the removal procedure.

Special Tools Illustration Tool Name Tool Number Heavy Duty Riveter 501-D011 (D80L-23200-A) or equivalent

Scheme 64

Scheme 64: Rear Audio/Climate Control Module

Item	Part Number	Description
1		Rear audio/climate control module rivets (2 required)
2	14B169	Rear audio/climate control module

Remove the rear seat backrest. For additional information, refer to «SEATING»(/lincoln/town-car/iii-2003-2011/remont/seats/#seat-system) article.
Drill out the 2 rivets and remove the rear audio/climate control module.
To install, reverse the removal procedure.

Multifunction Electronic Modules System Lincoln Town Car III рестайлинг

Module Controlled Functions

Air Suspension Module

Driver Door Module (DDM)

Driver Seat Module (DSM)

Lighting Control Module (LCM)

Rear Audio/Climate Control Module

Diagnostic Trouble Code (DTC) Chart

Scheme 59

Principles of Operation

Inspection and Verification

Symptom Chart

Scheme 60

REMOVAL AND INSTALLATION

Scheme 61

REMOVAL

INSTALLATION

Scheme 62

Scheme 63

Scheme 64

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