2004 Oldsmobile Bravada Logo
terry mckinney
terry mckinney Posted on Aug 29, 2012
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Have no low beam headlights!if i use a jumper wire they work,tried replacing switch still no lights,fuses are good, so is their a relay for low beam. i have a 2004 olds bravada

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Anonymous

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  • Posted on Aug 30, 2012
Anonymous
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Joined: Jul 31, 2012
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Yes you have a relay. Under the hood, in a plastic cover there is a breaker- relay center. It will be labeled either at the relay or on the inside of cover. murf427

5 Related Answers

Anonymous

  • 651 Answers
  • Posted on Dec 31, 2008

SOURCE: Headlights problems

first, make sure the bulbs are in good and snug, 2nd, make sure the wire harnase is plugged in snug.

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Anonymous

  • 373 Answers
  • Posted on Feb 03, 2009

SOURCE: headlight replacement

check with auto zone or auto advantage
if they are the good boy they might help do it

Tech jk

Tech jk

  • 102 Answers
  • Posted on Jan 04, 2009

SOURCE: 2002 Alero defogger

A common thing to fial on these- assumning the grid is ok, and wires are still attched to grid, is the rear def / antenna module. It is behind rt. rear quarter trim panel. The modules burn up, and also melt the connector. the module and connector would need to be replaced.

Anonymous

  • 112 Answers
  • Posted on Mar 26, 2009

SOURCE: 1992 bravada,cranks-no start, missing fuel pump

You can try to test the relay for function by swapping it with a known good working relay. If this does not work, you can put a jumper between the terminals that energize the pump (relay removed, ignition off). (On the Bosch Jetronic systems I used to work on, the pump would energize even with the ignition off). If there is still no sound, briefly turn the ignition on, and listen for the pump to energize. If you heard nothing, assume the pump is defective. I found most fuel pump problems and failures to occur in vehicles with 125,000 to 175,000 miles of use.

You may also try to check the Hall effect sensor ( a magnetic pulse detector that controls both spark and fuel flow) located within the distributor body (where the spark-plug wires attach to the distributor.

And finally, if that is good, check the ignition module within the distributor. It's a sealed transistorized circuit bolted to the inside of the distributor body with 5mm bolts.

Anonymous

  • 253 Answers
  • Posted on Jul 09, 2009

SOURCE: Main brake lights not working, third light works,

Most likley the brake light switch. It has 2 different sides. One for the third brake light and one for the lower brake lights. It is inexpensive and can be changed easily. Good Luck

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0helpful
1answer

I have a 99 kenworth t800 single cab, low beams don't work with switch, they work when I turn on high beams, replaced switch already and connection good, what's next step?
If you have already replaced the switch and checked the connections, there could be a few other possible reasons for the low beams not working:
  1. Relay issue: The headlight relay controls the low beams. Check if the relay is functioning properly, if not, replace it.
  2. Fuse issue: Check if the headlight fuse is blown, if so, replace it.
  3. Wiring issue: There may be a problem with the wiring between the switch, relay and lights. Inspect the wiring for any damage, such as frayed wires, loose connections, or melted insulation.
  4. Ground problem: Make sure that the ground connection to the headlight is secure.
  5. Light bulb problem: Finally, check if the low beam light bulbs themselves are functioning.
If these checks do not solve the problem, it may be necessary to take your truck to a professional mechanic for further diagnosis and repair.
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Feb 10, 2023 • Cars & Trucks
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I have a 2007 Chrysler sebring and drivers low beams will not work.
try the fuses or wire fuse links , the only other thing in the circuit is the wires broken or the light low switch is bad
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Nov 08, 2014 • 2007 Chrysler Sebring Sedan
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Low beams gone on 2005buick lacross
look at the bulbs first.
there is the possibility that the headlamp switch is defective. Take the connector off and replace slowly to see if the connection is ok.
Put a jumper wire from battery to low beams. if this turns on the lights the switch is bad.
Then try the dimmer switch on steering column. Work back and forth a few times and watch for the lights to come on hard or flicker.
if the flicker replace switch assembly. again if nothing jumper the battery wire to low beams. If this turns the lights on replace switch.
Last the running lights module. jumper the wires again. replace if necessary.
Read full answer
Mar 15, 2013 • 2005 Buick LaCrosse
1helpful
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I have a 95 SC2. The high beam headlight on the passanger side does not work. Both low beams work, and when the high beams are turned on, the right side goes out completley. I tried a new light and then...
According to the wiring diagram, there is no relay involved.
The headlight switch provides the ground for the lights and they get power from a fuse for each side. So the high and low beam on one side is powered by the same fuse and the ground is thru the switch.
Could be the switch but chances are a wiring problem.
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Feb 03, 2013 • Saturn SC Cars & Trucks
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I have a 2005 buick lacrosse. The low beam headlights have stopped working again(2nd time) The first time, even though the warning light was on, nothing was found wrong in the system. The headlights just...
https://postimg.org/image/agdjusdgl/

Click on the link. What testing have you done. Did you check for voltage and ground at the lo beams? Use a test light. In the diagram, the top wire for low beams is voltage, the bottom wire is ground. There are lo beam fuses, check those. Check voltage at fuse with lo beams turned on. It might be possible to unplug the low beam relay and use proper jumper wire on proper terminals to see if lo beams will operate. If they operate with the jumper but not w/o, check the control side of relay.
Your head lamp switch and dimmer are both inputs to bcm. I can only help with testing. You have to do the testing.
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Feb 19, 2018 • Buick LaCrosse Cars & Trucks
4helpful
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No low beams toyota tercel
Hi,
Check that there is not a relay on the low beam circut, you should find the relay for this in the engine bay area. Also check for a separate mounted relay which may have been fitted to allow larger wattage headlight bulbs to be fitted. I hope this helps, let me know how you get on.

Jason
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Apr 04, 2010 • 1991 Toyota Tercel
4helpful
1answer

I only have high beam headlights. I have replaced the light bulbs and checked the fuses. All the other lights work.
about troubleshooting your headlights on your vehicle. I would isolate the wire that comes from the headlight switch to the headlamp bulbs for low beam and check to see if there is a short in the wire. You can find this wire by using a test light turn on the key and get a good ground with the test light poke the wire and see if the test light illuminates with the headlight switch on. ---- Also check the wires, and check the fuse for your low beams. could of blown a fuse on your lows, but your highs will still work.
Every single time I have had a failure of low beam in a headlight without failure of high beam, it has been because the lamp bulb or halogen lamp module has reached the end of its serviceable life, not because of any wiring problems. Low beam burns out first because it is on the most. If low beam is lost simultaneously in both headlights, I would check fuse first, then the headlight switch. If low beam is lost on one side only, it is almost always going to be due to the bulb or lamp module needing to be replaced. In that case, replace them in both headlights because the other one will be going kaput in short order, as well.
There is something to check. Does the low beam relay click when you turnt he low beams on?
if it does not click then
Then find the BCM at the base of the steering column. In there find the grey connector and in there, find the pink/white wire in terminal A4. Use a wire to jump that wire to ground. IF the low beams come on, then it is likely the BCM is bad.
Also check a bad wire between the fuse block and the BCM. before replacing the BCM . Start under the fuse block. This is the fuse block under the hood.
This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya
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Mar 18, 2010 • 2004 Chevrolet Cavalier
0helpful
1answer

My 1992 Corolla DX headlights won't come on! I have changed the fuses and the bulbs. The relay clicks when turning the switch and the wiring seems to be in good condition but I am no electrician. The...
Power flows from the battery to the main fuse. Then it flows to the control coil and contact side of the headlight relay. When you turn on the headlights, the headlight switch provides ground to the control coil in the headlight relay and that operates the contacts. The contacts allow power to flow to the right and left hand headlight fuses. Power flows to the headlights. The headlight switch is what provides ground to the high and low beams on the headlights.

To diagnose, remove the headlight relay. Using a voltmeter, check for battery voltage on terminals 3 & 4 in the socket with the key in the RUN position. Then turn on the low beams. Test for good ground on terminal 1 in the socket. If you're not getting ground, then you've got a problem with either a bad headlight combo switch or a bad ground. If you get good ground on terminal 1, reinstall the relay, turn on the low beams and test for power in the headlight sockets. If you get battery voltage, that confirms you've got good fuses and wiring up to that point. Next, check for good low beam ground on the red/green wire in the bulb socket. If you're not getting good ground, it's either a bad combo switch or bad ground from the combo switch. Then turn on the high beams and check for good ground on the red/yellow wire in the bulb sockets.

It wouldn't hurt to clean the ID ground on the left side of the instrument panel, but based on everything you've said so far, this sounds like a bad combo switch
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Jul 26, 2017 • 1992 Toyota Corolla
2helpful
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I have a 1998 cavilier i have no low beams,fuses checked good
 I’m inclined to believe you have a headlight switch problem and here’s why. There are 2 fuses one for each of the headlights on the vehicle. For the daytime running lights (DRL) to operate the fuse and wiring to the right head light has to be good, because it supplies the power for both headlights in the DRL mode. The fuse and wiring for the left headlight has to be good because the DRL relay needs power from that fuse to operate. The DRL relay in turn provides a path through the left headlight and wiring to ground. When you pull back on the dimmer switch, you are activating the flash to pass circuit of the headlight switch assembly. Because the flash to pass mode works you then know that the high beam wiring and headlight bulbs are in good condition. This also tells you that the ground circuit for the headlight switch is good. In many newer vehicles, the headlight switch doesn't provide power to the lights. The headlight switch has now become the path to ground to complete the circuit. The headlight switch and the high/low beam dimmer control are one assembly so when you replace one you get the other free. Such a deal! My coffee bet is on the headlight switch assembly.
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May 12, 2009 • 1998 Chevrolet Cavalier
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Low beam headlights don't work
https://s12.postimg.org/6o2zcv3hp/jetta_headlamps.jpg

Click on the link.
This is for 03 jetta gls
There are fuses for left and right low beams. Headlights on low beam, use a test light, see if voltage on fuse circuit? If no voltage that will lead us back to dimmer switch or problem with wiring circuit from dimmer switch.
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May 26, 2017 • 2003 Volkswagen Jetta TDI
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I have a 99 kenworth t800 single cab, low beams don't work with switch, they work when I turn on high beams, replaced switch already and connection good, what's next step?

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