Grand marquis lcm wiring diagram - 1999 Lincoln Town Car

Does your Grand Marquis have head lamps with auto lamps ? Which fuse keeps blowing ? Could be a shorted LCM - lighting control module ?

Lighting Control Module (LCM)
The LCM eliminates the electronic interference and heat associated with the thermoelectric devices used previously. The LCM is a microprocessor-based module that controls several vehicle subsystems. It responds to electrical input signals from various switches, sensors, and external modules..

Visual Inspection Chart Mechanical Electrical

Headlamp switch

Central junction box (CJB) fuse(s).
- 1 (15A)
- 9 (20A)
- 26 (10A)
- 15 (7.5A)
- 7 (10A)
Headlamp bulb
Circuitry
Headlamp switch
Lighting control module (LCM)
Underhood power distribution box (PDB)
- F104 (40A)
- F01 (20A)
- F02 (25A)

Feb 12, 2017 | Cars & Trucks

1 Answer

I have a 96 grand marquis mercury replaced the the light switch and still all the interior lights stay on and won't go off

Lighting control module is bad . look at a wiring diagram at http://www.bbbind.com/free_tsb.html . Google location of LCM

Jan 06, 2017 | 1996 Mercury Grand Marquis

2 Answers

2001 grand marquis #27 fuse blows intermitantly and headlights go out

Well #27 is one of the main fuses for the lamp control module which controls all of the lights on the car.
So it could be any of the lights, sockets, or wiring. You may need a shop manual to get the wiring diagrams to trace the problem.
If the problem only happens with the headlights on, my guess would be one of the headlights or the dimmer switch is getting too hot.
A bad ground could also cause it by having too much resistance for the circuit.

Mar 07, 2015 | 2001 Mercury Grand Marquis

1 Answer

Is the spark plug wire diagram for a 2002 mercury grand marquis the same for a 2005 grand marquis.

HERE'S A LINK TO YOUR WIRING ORDER. Specifications Firing Order AutoZone com

Feb 18, 2015 | 2005 Mercury Grand Marquis

1 Answer

Lcm 2004 grand marquis

the lcm is just right of the steering wheel column and left of and below the radio. you have to remove a plastic cowling under the steering column that is attached by two plastic push pins on either side of the column. the cowling slides out and the lcm is exposed. it's a black box a bit bigger than the size of a brick and has three wire harnesses plugged into it. the lcm is held in a metal cage bracket with two hex head screws. After removing the screws, the lcm can be pushed up slightly and out of the cage toward the front of the fire wall. it's easier to detach the harnesses after the lcm is out of the cage.

Nov 26, 2011 | Cars & Trucks

1 Answer

How do i replace the lcm on my 2004 grand marquis?

The lcm is just right of the steering wheel column and left of and below the radio. you have to remove a plastic cowling under the steering column that is attached by two plastic push pins on either side of the column. there is an accessory light that needs to be unplugged from the cowling. the cowling slides out and the lcm is exposed. it's a black box a bit bigger than the size of a brick and has three wire harnesses plugged into it. the lcm is held in a metal cage bracket with two hex head screws. After removing the screws, the lcm can be pushed up slightly and out of the cage toward the front of the fire wall. it's easier to detach the harnesses after the lcm is out of the cage.

Nov 26, 2011 | 2004 Mercury Grand Marquis

1 Answer

HI, I HAVE A 99 GRAND MARQUIS WITH LIGHTING PROBLEMS THAT DRAINS BATTERY.AT FIRST THE INTERIOR LIGHTS CAME ON AT ANY TIME.I REMOVED ALL INTERIOR BULBS.NOW I AM SHOWING A SHORT IN FUSE 11 IN HI-AMP FUSE...

the LCM is under the dash just above the steering column. It is $400. Get one on ebay only for your year and model. others won't work.

pleae rate

SECTION 419-10: Multifunction Electronic Control Modules 1999 Crown Victoria/Grand Marquis Workshop Manual
REMOVAL AND INSTALLATION Module —Lighting Control (LCM) Removal

CAUTION: Prior to removal of module, it is necessary to upload module configuration information to New Generation STAR (NGS) Tester. This information needs to be downloaded into the new module once installed. For additional information; refer to Section 418-01 .
CAUTION: Electronic modules are sensitive to electrical charges. If exposed to these charges, damage may result.
Disconnect the battery ground cable.

Remove the LH instrument panel lower insulator.
1. Remove the pin-type retainers.
1. Disconnect the courtesy lamp.
1. Remove the LH instrument panel insulator.

Position the LCM aside.
1. Remove the screws.
1. Release the locking tab.
1. Position the LCM aside.

Remove the LCM.
1. Disconnect the electrical connectors.
1. Remove the LCM.

Nov 19, 2009 | 1999 Mercury Grand Marquis

1 Answer

Lights on 2000 Mercury Grand marquis will suddenly go out while

please rate as solved if this fixes your issue. Let me know too.

I believe you have a bad LCM, Lighting Control Module. Or, the connectors to it have corrosion maybe. The module is above the brake pedal. It is very expensive. You can buy one at discount from tascafordparts.com. Sometimes, ebay has one too. But, you need one for your year car. Match the part number on your LCM.

Here's how to get it out.

SECTION 419-10: Multifunction Electronic Control Modules 2000 Crown Victoria/Grand Marquis Workshop Manual
REMOVAL AND INSTALLATION Module —Lighting Control (LCM) Removal

CAUTION: Prior to removal of 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 Section 418-01 . (I replaced one without doing any programming, so I don't think this applies).

CAUTION: Electronic modules are sensitive to electrical charges. If exposed to these charges, damage may result.
Disconnect the battery ground cable.

Remove the LH instrument panel lower insulator.
1. Remove the pin-type retainers.
1. Disconnect the courtesy lamp.
1. Remove the LH instrument panel insulator.

Position the LCM aside.
1. Remove the screws.
1. Release the locking tab.
1. Position the LCM aside.

Remove the LCM.
1. Disconnect the electrical connectors.
1. Remove the LCM.

Jun 03, 2009 | 2000 Mercury Grand Marquis

3 Answers

Turn signal don't work or the flashers?

If you still have flasher problems, I read on Google to spray WD-40 down in and around the hazzard flasher button, then press it up and down several times...and BINGO...all flashers and signals worked again....just had some dirt and dust in the wiring....

Jan 24, 2009 | 1997 Mercury Grand Marquis

7 Answers

Headlights cut out after being on 10 to 15 minutes

I had the same exact problem. I found that I could make the lights come on by pushing on the top connector on the front side of the lighting control module (LCM). I pulled the connector off, cleaned it and put it back together with some dielectric grease. Only time will tell if I fixed it. On my car, it would only have problems after the headlights had been on for about 3 hours; kind of hard to re-create.

Oct 02, 2008 | 2003 Mercury Grand Marquis

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6ya staff · Answer 1 · 1/2/2017 12:00:00 AM

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
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goodluck!

thomas tysiak · Answer 2 · 6/30/2009 12:00:00 AM

http://i28.photobucket.com/albums/c216/thomaspedemon/99lcm1of3.gif

http://i28.photobucket.com/albums/c216/thomaspedemon/99lcm2of3.gif

http://i28.photobucket.com/albums/c216/thomaspedemon/99lcm3of3.gif

follow the three links for complete wiring diagram of lcm

Grand marquis lcm wiring diagram - 1999 Lincoln Town Car

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