Question about 2001 Saturn SC

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I have dim high beam headlights on my Saturn SC 2001. Replaced the bulbs, not the problem. Could it be the daytime running lights circuit? In this car the high beams do double duty as daytime running lights, only at half power. How do I troubleshoot this?

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Those systems are a curse to repair, usually its a grounding problem, the headlight ground through the bcm, try going to cavalier drl repairs, its a website for gm car headlights

Posted on Nov 09, 2010

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I have a 2001 dodge ram 1500. does anyone know anything about the headlight wiring?I would like to know how it works. Currently , i know the violet wire is 12v constant and the vt/wht wire is ground when...


Well, where to start...
First there are 4 different headlamp systems available for 2001 Dodge Ram 1500.

> WITH Daytime Running Lights and WITH Quad Headlamps

> WITH Daytime Running Lights and WITHOUT Quad Headlamps

> WITHOUT Daytime Running Lights and WITH Quad Headlamps

> WITHOUT Daytime Running Lights and WITHOUT Quad Headlamps

So providing you with an EXACT flow chart of what happens depends on which system your truck is equipped with.

However, the general jist of it goes like this:

The Violet wire you mention is your power feed to the bulbs (high beam and low beam elements) from the headlamp fuse (HOT AT ALL TIMES). The dimmer switch basically determines which of the two headlamp elements is going to get grounded to complete the circuit. When the Violet/White wire gets grounded, that is low beam. When the Red/Orange wire gets grounded, that is high beam.

Just a little "Automotive Electrical Systems 101":

Your Headlamps work just like ALL automotive electrical circuits. The power goes from battery POSITIVE to battery NEGATIVE in order to complete the circuit. PERIOD! Every circuit on your vehicle is as simple as that. If you take a closer look at the wiring diagrams, you will see this.

Apr 10, 2012 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

2002 Dodge Caravan headlamps: one works on dim the other works on high beam but not together. Also only one daytime running lamp.


Your van has dual diligent headlamp bulbs, that means each headlight has one bulb that serves as high beam and low beam. What has most likely happened is on one side the low beam filament has burnt out, and on the other side the high beam filiment has burnt out. The daytime running lights are just the high beam filament running on reduced power, so if the high beam doesn't work on one side, that same side will have no daytime running light. Replace both headlamp bulbs with matching, good quality bulbs.

Mar 06, 2011 | 2002 Dodge Grand Caravan

1 Answer

When I click the headlights to bright all of the lights go out. I have already replaced the switch in the stearing column. What is wrong.


Try disconnecting one of your headlights and click on the high beams. If it goes to high without any other problems, then the problem is in the other headlight high beam circuit. If all the lights go out, then the problem lies in the high beam circuit of the headlight you disconnected. You can verify this by reconnecting the first headlight and disconnecting the other one. There is most likely a short to ground in one of the high beam circuits.

If you have daytime running lights. That is, your headlights stay on automatically. You will need to check the daytime running light relays. There may be four of them to check. One of them grounds the high beams.

Jan 30, 2011 | 1992 Toyota Pickup

1 Answer

Car: 2000 Chev Cavalier 4dr 2.2L? 4 cylinder car? My problem is this my low dim lights are very low, my high beams works only when I hold the lever arm ? (Not sure how to explain this?) any ideas what...


First, be sure that the headlights are actually coming on. These cars have daytime running lights that use the headlight bulbs at a lower voltage. If the car is only using the daytime running lights, the tail lights will not be on with the headlights. The multifunction lever always turns on the high beams when you pull on it (it's called 'flash to pass'). Make sure the headlight switch is working, and also check the headlight circuit breaker.

Nov 17, 2010 | 2000 Chevrolet Cavalier

1 Answer

2002 pathfinder, the left headlight bulb does not work when the


Sounds like you need a bulb,the daytime running lights send power to the high beam wire so they look like low beam lights are on but really they are high beam lights running on low voltage.

Nov 19, 2009 | 2002 Nissan Pathfinder

2 Answers

My r/f high beam is out, so I replaced the bulb but I still have no high beam. Also my daytime running lights stopped working, could they possibly be related?


Yes your daytime running light just uses the headlight bulb on a lower voltage so if the headlight is not working the drl will not work as well, they are dirrectly related,,check the head light fuse,and check to make sure the bulb is good,,

Oct 06, 2009 | 2000 Saturn SL

2 Answers

My headlight just stopped working. One of my


dont replace the bulbs ...check the fuses first...each circuit has its own independent fuse...one for low beam one for high beam and a separate low voltage one for running lights...you may have 1 bad bulb at very worst that could have blown the fuse...why spend extra money on 2

Sep 28, 2009 | 2001 Chevrolet Cavalier

1 Answer

1994 ford f-150 with day time running lights headlightnot working


Daytime Running Lamps
The daytime running lamp (DRL) system is designed to turn the high beam headlamps on, with a reduced light output, and without illuminating the high beam indicator lamp in the instrument panel. You have a DRL Module.
The multifunction switch is the stalk on your column.

This is 96 F150 circuit. Don't have 94.

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Symptom Chart, Headlamps HEADLAMPS Condition Possible Source Action
  • Headlamps Inoperative
  • Circuitry open/shorted.
  • Damaged headlamp switch.
  • Blown fuse.
  • GO to Pinpoint Test A .
  • Headlamps On Continuously
  • Circuitry open/shorted.
  • Damaged headlamp switch.
  • GO to Pinpoint Test B .
  • High Beams or Low Beams Inoperative
  • Circuitry open/shorted.
  • Damaged multi-function switch.
  • GO to Pinpoint Test C .
  • One High Beam or One Low Beam Headlamp Inoperative
  • Circuitry open/shorted.
  • Damaged connector.
  • Headlamp bulb damaged.
  • GO to Pinpoint Test D .
  • Flash-to-Pass Inoperative
  • Blown fuse.
  • Circuitry open/shorted.
  • Damaged multi-function switch.
  • GO to Pinpoint Test E .



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Feb 25, 2009 | 1994 Ford F150 Styleside Supercab

1 Answer

Headlights alternate on and off left and right daytime/high beam


although the underhood relay panel is common, I'd check your headlamp bulbs first, these are cheaper than the fuse box. The daytime running lights work off the high beam circuit, thus, a blown highbeam bulb could be the culprit, the fusebox solution was more common on 2001 and up modles, although it's a definite possibility.

Feb 18, 2009 | 2000 Dodge Caravan

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