Daytime running lights?

The DRLs are controlled by the smart junction box (SJB) by operating the low beam headlamps at a reduced intensity. The DRL driver (integral to the SJB) supplies pulse-width modulated (PWM) voltage, approximately 75%-92% of battery voltage, to the low beam headlamps when the following conditions are met:
à   The ignition switch is in the RUN position.
à   The high beams are not illuminated.
à   The parking brake is not engaged
so if you need to have them off set the parking brakes

Can be the headlamp switch, the GEM, or the multi-function switch or wiring/fuses, scan it for "B" codes before you begin this will pin point the area of the fault.

TEST C: HEADLIGHTS INOPERATIVE WITH AUTOLAMPS ON 1. Turn headlight switch to ON position. If headlights operate, go to next step. If headlights do not operate, repair headlight system. See HEADLIGHTS in appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL. 2. Turn ignition switch to LOCK position. Disconnect headlight switch 12-pin harness connector C205a, located on left side of dash panel. See Fig. 1 . Turn ignition switch to RUN position.

Using WDS or NGS tester, command headlights ON. Measure voltage between ground and headlight switch harness connector C205a terminal No. 9 (Red/Yellow wire). See Fig. 4 . See WIRING DIAGRAMS . If any voltage exist, go to next step. If voltage does not exists, go to step 6 . 3. Turn ignition switch to LOCK position.

Disconnect Central Junction Box (CJB) 36-pin harness connector C270b, located under left side of instrument panel. See Fig. 1 . Measure resistance between headlight switch harness connector C205a terminal No. 9 and CJB harness connector C270b terminal No. 32 (Red/Yellow wire). See Fig. 4 and Fig. 7 . See WIRING DIAGRAMS . If resistance is less than 5 ohms, reconnect CJB harness connector C270b and go to next step. If resistance is 5 ohms or more, repair open circuit in Red/Yellow wire between headlight switch and CJB.

After repair, clear DTCs and test system for normal operation. 4. Remove fuse No. 29 (15-amp) from Central Junction Box (CJB), located under left side of instrument panel. See Fig. 1 . Disconnect GEM harness connector C201d. See Fig. 8 . Turn ignition switch to RUN position. Measure voltage between ground and GEM harness connector C201d terminal No. 25 (CJB side). See Fig. 8 . See WIRING DIAGRAMS . If any voltage exists, repair or replace CJB as necessary. If no voltage exists, install fuse No. 29 and go to next step.

After repair, clear DTCs and test system for normal operation. 5. Disconnect CJB 36-pin harness connector C270b, located under left side of instrument panel. See Fig. 1 . Connect a 10-amp fused jumper wire between ground and GEM harness connector C201d terminal No. 25 (CJB side). See Fig. 8 . Measure resistance between ground and CJB harness connector 270b terminal No. 32 (CJB side). See Fig. 7 . See WIRING DIAGRAMS . If resistance is less than 5 ohms, reconnect all harness connectors and go to next step. If resistance is 5 ohms or more, repair or replace CJB as necessary. After repair, clear DTCs and test system for normal operation.

6. Disconnect all GEM harness connectors. Inspect for corrosion or pushed out pins. Repair or replace connectors terminals as necessary. See WIRING DIAGRAMS . Reconnect all GEM harness connectors, ensuring they are connected correctly. Operate system and verify if concern is still present. If concern is still present, replace GEM. See GENERIC ELECTRONIC MODULE under REMOVAL & INSTALLATION. If concern is not present, system is operating correctly at this time. After repair, clear DTCs and test system for normal operation.

Fig. 7: Identifying Central Junction Box Harness Connector C270b Terminals Courtesy of FORD MOTOR CO. Fig. 8: Identifying Generic Electronic Module Harness Connector C201d Terminals Courtesy of FORD MOTOR CO. NOTE: Perform all voltage and resistance tests using a Digital Volt-Ohm Meter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure. Use an ohmmeter to isolate wiring harness shorts or opens. Page 1 of 1 AUTOLAMP SYSTEMS -2001 Ford Taurus SE 9/6/2008

Thats not an actual link, it's a credit to on demand...use the very bottom link to get a manual for your car...https://www.2carpros.com/kpages/auto_repair_manuals.htm

Is it a constant blink or only over bumps?

That is okay about the engine. They never made a V8 for one so I knew what you ment. As far as the lights, it sound tied into the vehicle security system. Have you ever noticed the security light staying on?

Sounds like the multifunction switch itself has problems.

Are you sure? Most came factory with one. Have you ever noticed a theft light flashing? It is a very quick flash when the engine / key are off.

Let me know. It was a few years back, but I thought it came from the factory with one.

Hi
i dont know how much help I will be, because you really need to do some checking on this type of problem, it could be several things including the drl module which is expensive, but for right now until you have it checked you can pull the drl fuse in the fuse box I think its #6 but double check, I just dont want to lead you down the wrong road, the drl module needs to be checked by a scanner

Jim

I need you to try something. Remove the flasher for the turn signals and tell me if the problem stops.

I believe that drl module is located down on the frame, driver's side of the radiator.