Passenger Compartment Fuse Panel Diagram for 2005 Lincoln Town Car
Passenger Compartment Fuse Panel Diagram for 2005 Lincoln Town Car

2005 Lincoln Town Car OBD2 Fuse Location and Function: Your Expert Guide

Understanding the fuse box in your 2005 Lincoln Town Car is crucial for maintaining its electrical system and diagnosing issues. A common point of interest for car owners and DIY mechanics is the OBD2 fuse. This fuse is essential for powering the On-Board Diagnostics II (OBD2) port, which is used for vehicle diagnostics and emission testing. If you’re experiencing issues connecting your scan tool or suspect a problem with your OBD2 port, a blown fuse might be the culprit.

The 2005 Lincoln Town Car utilizes two distinct fuse boxes. Knowing their locations and the specific fuses they house is key to troubleshooting electrical problems, including those related to your OBD2 system. Let’s explore these fuse boxes and pinpoint the OBD2 fuse location.

Passenger Compartment Fuse Panel

The primary fuse box you’ll need to check for OBD2 related issues is the Passenger Compartment Fuse Panel. This fuse box is typically located inside the vehicle, making it easily accessible.

Passenger Compartment Fuse Panel Diagram for 2005 Lincoln Town CarPassenger Compartment Fuse Panel Diagram for 2005 Lincoln Town Car

Referring to the diagram and the table below, you’ll find the fuse related to the OBD II system.

Type No. Description
Fuse MINI 10A 1 Starter relay coil
Fuse MINI 10A 2 Restraint Control Module (RCM), Occupant Classification Sensor (OCS), Passenger Air bag Deactivation Indicator (PADI)
Fuse MINI 10A 3 Audio, Navigation control head
Fuse MINI 10A 4 Back-up lamps
Fuse MINI 10A 5 Audio
Fuse MINI 10A 6 Passive Anti-Theft System (PATS), Powertrain Control Module (PCM) relay coil, Ignition coil relay coil, Fuel relay coil
Fuse MINI 10A 7 Wiper module
Fuse MINI 10A 8 Power Decklid Module (PDM), Lighting Control Module (LCM), Overdrive cancel switch, Cluster, Rear defroster relay coil
Fuse MINI 7.5A 9 Mirror switch illumination, Door lock switch illumination, Rear audio control, Heated seat switch illumination, LCM, Electrochromatic mirror, Overhead console
Fuse MINI 15A 10 Hazards
Fuse MINI 10A 11 Rear Air Suspensión Module (RASM)
Fuse MINI 10A 12 LCM (Illumination)
Fuse MINI 10A 13 Cluster, Extended rear park aide module
Fuse MINI 15A 14 Adjustable pedals
Fuse MINI 10A 15 Dual Automatic Temperature Control (DATC) module
Fuse MINI 20A 16 Cigar lighter, OBD II
Fuse MINI 10A 17 Anti-lock Brake System (ABS) module, Positive Crankcase Ventilation (PCV)
Fuse MINI 15A 18 LCM (Interior lighting)
Fuse MINI 10A 19 Driver’s Door Module (DDM) switches, PDM, Power mirrors, DSM
Fuse MINI 10A 20 LCM (Right-hand low beam)
Fuse MINI 10A 21 PATS LED, Cluster, Analog clock, Overhead console
Fuse MINI 10A 22 LCM (Left-hand low beam)
Fuse MINI 10A 23 LCM
Fuse MINI 15A 24 LCM (High beams), Multi-function switch (Flash-to-pass)
Fuse MINI 10A 25 Brake-Transmission Shift Interlock (BTSI), Stop switch signal feed, Speed control deactivation switch
Fuse MINI 15A 26 LCM (Park lamps, cornering lamps)
Fuse MINI 10A 27 DATC module
Fuse MINI 10A 28 Center High-Mounted Stop Lamp (CHMSL)
Fuse MINI 15A 29 Turn signals
Fuse MINI 15A 30 Stop lamps
Fuse MINI 10A 31 A/C cycle switch, Heated seats module
Fuse MINI 10A 32 Mirror heaters
Fuse MINI 15A 33 Audio, Navigation
Relay K101 Rear defroster relay

Fuse number 16, a 20A Mini fuse, is designated for both the Cigar lighter and the OBD II port. This means if your OBD2 port is not working, or your cigarette lighter outlet is also non-functional, this fuse is the first place to check.

Power Distribution Box

The 2005 Lincoln Town Car also has a Power Distribution Box, which is typically located under the hood in the engine compartment. While less likely to be directly related to the OBD2 port itself, understanding this box is also important for overall vehicle electrical system knowledge.

Power Distribution Box Diagram for 2005 Lincoln Town CarPower Distribution Box Diagram for 2005 Lincoln Town Car

Below is the fuse and relay listing for the Power Distribution Box.

Type No. Description
Fuse MINI 20A 1 Ignition switch (Key in, RUN 1, RUN 2)
Fuse MINI 25A 2 Ignition switch (RUN/START, RUN/ACC, START)
Fuse MINI 10A 3 Powertrain Control Module (PCM) keep alive power
Fuse MINI 20A 4 Fuel relay feed
Fuse MINI 20A 5 Instrument panel power point
Fuse MINI 15A 6 Alternator regulator
Fuse MINI 30A 7 PCM relay feed
Fuse MINI 20A 8 Driver’s Door Module (DDM)
Fuse MINI 15A 9 Ignition coil relay feed
Fuse MINI 20A 10 Horn relay feed
Fuse MINI 15A 11 A/C clutch relay feed
Fuse MINI 20A 12 Audio
Fuse MINI 20A 13 Instrument panel fuse box feed #3
Fuse MINI 20A 14 Stop lamp switch
Fuse MINI 15A 15 Lumbar, Fuel door
Fuse MINI 20A 16 Heated seats
Fuse MINI 15A 19 Injectors
Fuse MINI 15A 20 PCM, Mass Air Flow (MAF) sensor
Fuse MINI 15A 21 Powertrain loads and sensors
Fuse MINI 10A 22 Rear Air Suspensión Module (RASM)
Fuse MINI 10A 23 Delayed accessory (Moonroof, audio and navigation system)
Fuse FMX/JCase 40A 101 Blower relay feed
Fuse FMX/JCase 50A 102 Cooling fan
Fuse FMX/JCase 50A 103 Instrument panel fuse box feed #1
Fuse FMX/JCase 40A 104 Instrument panel fuse box feed #2
Fuse FMX/JCase 30A 105 Starter relay feed
Fuse FMX/JCase 40A 106 ABS module (Pump)
Fuse FMX/JCase 40A 107 Rear defroster relay feed
Fuse FMX/JCase 40A 108 Power Decklid Module (PDM)
Fuse FMX/JCase 20A 109 ABS module (Valves)
Fuse FMX/JCase 30A 110 Wiper module
Fuse FMX/JCase 20A 111 Rear power point #1
Fuse FMX/JCase 30A 112 RASM (Air compressor)
Fuse FMX/JCase 20A 113 Rear power point #2
Fuse FMX/JCase 20A 114 Moonroof
Fuse FMX/JCase 20A 115 Rear cigar lighters
Fuse FMX/JCase 30A 116 Pulldown module
Fuse FMX/JCase 30A 117 Driver seat module
Fuse FMX/JCase 20A 118 Rear heated seats
Relay 201 A/C clutch
Relay 203 Ignition coil
Relay 204 PCM
Relay 206 Fuel
Relay 209 Horn
Relay 301 Starter
Relay 302 RASM (Air compressor)
Relay 303 Blower
Relay 304 Delayed accessory
Diode ATO 501 A/C clutch
Diode ATO 502 Reverse battery
Diode ATO 503 Horn, Door latch
Circuit breaker MAXI 601 Power seats
Circuit breaker MAXI 602 Delayed accessory relay for windows, moonroof, audio and navigation system

While the Power Distribution Box doesn’t house a dedicated “OBD2 fuse”, it controls vital systems. Issues in this box could indirectly affect vehicle diagnostics. However, for direct OBD2 port fuse troubleshooting on your 2005 Lincoln Town Car, focus primarily on the Passenger Compartment Fuse Panel and Fuse #16 (20A).

If you are experiencing problems with your OBD2 port, always check this fuse first. Replacing a blown fuse is a simple fix that can save you time and money on diagnostics. If the fuse continues to blow, it indicates a potential short circuit or overload in the cigar lighter or OBD2 system that requires further investigation by a qualified mechanic.

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