Question about 2001 Lincoln Town Car

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LCM power fuse #25 15amp fuse for C222 keeps blowing periodically

It seems to happen with the main light switch in "Auto" during the day, but I'm leaving it in "Off " now to check this theory. When it goes the interior lights don't work and head and tail lights are on all the time until the ignition switch is turned off.

Posted by Bob Eller on


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Jeff Armer

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The first place to start would be to have the LCM checked for DTC'S - diagnostic trouble code , rather then guessing .
B1689 Autolamp Delay Input Circuit Failure LCM GO to Pinpoint Test F . B1691 Autolamp Delay Input Circuit Short to B+ LCM GO to Pinpoint Test F . B1695 Autolamp ON/OFF Short to B+ LCM GO to Pinpoint Test F .
Inspection and Verification

  1. Verify the customer concern by operating the autolamps.
  1. Visually inspect for obvious signs of mechanical and electrical damage; refer to the following chart:

Visual Inspection Chart Mechanical Electrical
  • Headlamp switch
  • Autolamp switch
  • Autolamp sensor
  • Blown fuse(s)
  • Damaged wiring harness
  • Headlamp bulb
  • Loose or corroded connection
  • Lighting control module (LCM)

  1. If the inspection reveals obvious concern(s) that can be readily identified, repair as required.
  1. If the concern remains after the inspection, connect the New Generation STAR (NGS) Tester to the data link connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the NGS menu. If the NGS does not communicate with the vehicle:
    • check that the program card is properly installed.
    • check the connections to the vehicle.
    • check the ignition switch position.
  1. If the NGS still does not communicate with the vehicle, refer to the New Generation STAR Tester manual.
  1. Perform the DATA LINK DIAGNOSTIC TEST. If the NGS responds with:
    • CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to Section 418-00 .
    • NO RESP/NOT EQUIP for lighting control module (LCM), go to Pinpoint Test A.
    • SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and perform self-test diagnostics for the LCM.
  1. If the DTCs retrieved are related to the concern, go to the LCM Diagnostic Trouble Code (DTC) Index to continue diagnostics.
  1. If no DTCs related to the concern are retrieved, proceed to Symptom Chart to continue diagnostics.
  2. LCM Diagnostic Trouble Code (DTC) Index DTC Description DTC Caused By Action B1312 Lamp Headlamp Input-Short to B+ LCM GO to Pinpoint Test D . B1334 Decklid Ajar-Short to Gnd LCM REFER to Section 501-14B . B1340 ESC Tone Request Short to Ground LCM REFER to Section 501-14B . B1342 ECU-Defective LCM REPLACE the LCM. REFER to Section 419-10 . B1352 Ignition Key-In-Ckt Failure LCM REFER to Section 417-02 . B1359 Ignition Run/Acc Input Circuit Failure LCM REFER to Section 211-05 . B1462 Seat Belt SW_Ckt Failure LCM REFER to Section 417-02 . B1485 Brake Pedal Input Circuit Failure LCM GO to Pinpoint Test G . B1555 Ignition Run/Start Circuit Failure LCM REFER to Section 211-05 . B1569 High-Beam-Short to B+ LCM GO to Pinpoint Test C . B1577 Park Lamp Input-Short to B+ LCM GO to Pinpoint Test M . B1581 Panel Dim Increase Input Circuit Short to B+ LCM REFER to Section 413-00 . B1585 Dim Panel Decrease Input Circuit Short to B+ LCM REFER to Section 413-00 . B1676 Battery Voltage Out of Range LCM REFER to Section 414-00 . B1687 Dome Lamp Input Short to B+ LCM REFER to Section 417-02 . B1689 Autolamp Delay Input Circuit Failure LCM GO to Pinpoint Test F . B1691 Autolamp Delay Input Circuit Short to B+ LCM GO to Pinpoint Test F . B1695 Autolamp ON/OFF Short to B+ LCM GO to Pinpoint Test F . B1873 Turn Signal/Hazard Power Feed Short to Ground LCM GO to Pinpoint Test H . U1041 SCP Invalid or Missing Data for Vehicle Speed ABS PERFORM ABS Self-Test. U1059 SCP Invalid or Missing Data for Transmission/Transaxle/PRNDL PCM PERFORM PCM Self-Test. U1197 SCP Invalid or Missing Data for Door Locks DDM PERFORM DDM Self-Test. U1199 SCP Invalid or Missing Data for External Access (Doors) DDM PERFORM DDM Self-Test.

Posted on Feb 09, 2018


5 Related Answers


  • 1 Answer

SOURCE: tail lights

I had this same problem with a nissan. When I hooked up the aftermarket stereo there was a wire for lumination and the aftermarket already has this covered so hooking it up blew the fuse for the tail lights.

Posted on Dec 06, 2008



  • 125 Answers

SOURCE: No interior lights

theres a in dash lighting switch you need to replace

Posted on Feb 04, 2009


  • 2 Answers

SOURCE: 1991 lincoln town carTail lights and turn signals stopped working

One of the tail light bulbs can be shorted internally.  Replace the tail light bulbs first.  Try this cheap fix first.

Posted on Mar 06, 2009


  • 124 Answers

SOURCE: Park/Tail lights not working. Brake/signals are

Before going ahead and spending money on a new module, test it first. The module is located under the steering column. You'll find a Brown wire on one of the connectors (i just looked at a wire diagram). Do no disconnect anything. Back probe the brown wire, which is the power feed to your park lights. With the lights off, there should be 0 volts on you voltmeter. Turn the park lamps on, There should be 12V. If there is not 12V, disconnect the connector and try to check voltage at the pin that feeds to the brown wire, if still not 12V, replace the module. If you do get 12V, then module is ok, find where the 12v is being dropped before making it to the lamps.

Posted on Aug 09, 2009


  • 157 Answers

SOURCE: 1997 lincoln continental check steering assist light

Is the fluid full enough? there should be a dipstick to tell where the level should be. Also is the belt tight enough? Wires loose?

Posted on Aug 22, 2009

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