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 Low beam not working
#1012308
11/05/10 02:41 AM
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Joined: Aug 2003
Posts: 2,854
OP
Roll Me Over
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Hey guys... just put my lights back in, for a few minutes the driver side headlamp worked fine, now only the high beam works. I switched with new bulbs and still the same thing... only highbeam. Passenger side works fine. What could cause this?
89 4Runner
3" BL, M/T locks, 33"bfg mt, bilstein, Kayline, tubebumper, toyotafiberglass panels
TBI: Elocker,3.4 w/ORS,b+b,S2Sstg2cams,arias pistons,P+P intake,TRDs/c,URDpullies+7th,downey headers,MAPECU2,WEGO WB, SupraMAF,walboro255,stg4clutch, EPaOo2 sim
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Re: Low beam not working
[Re: 4Crawler]
#1012310
11/05/10 06:48 PM
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Joined: Aug 2003
Posts: 2,854
OP
Roll Me Over
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I checked the voltages they look good.
I was having a problem finding a good ground when in low beam however....?
89 4Runner
3" BL, M/T locks, 33"bfg mt, bilstein, Kayline, tubebumper, toyotafiberglass panels
TBI: Elocker,3.4 w/ORS,b+b,S2Sstg2cams,arias pistons,P+P intake,TRDs/c,URDpullies+7th,downey headers,MAPECU2,WEGO WB, SupraMAF,walboro255,stg4clutch, EPaOo2 sim
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Re: Low beam not working
[Re: Greg_Canada]
#1012311
11/06/10 01:03 AM
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Joined: Jan 2000
Posts: 12,153
Web Wheeler
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I checked the voltages they look good.
I was having a problem finding a good ground when in low beam however....? Well the head lights are switched ground, meaning the low beam terminal has a ground switched via the column dimmer (combo) switch. So if you do not see close to 0 volts at that terminal in low beam mode, that is your problem. In this case, 0 volts = good, 12 volts (or anything over 0.5 volts) = bad.
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Re: Low beam not working
[Re: 4Crawler]
#1012312
11/11/10 02:43 PM
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Joined: Aug 2003
Posts: 2,854
OP
Roll Me Over
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the wire corroded off where it clamps the plug, but didn't pull out because the wire wrap holder still held it in.
Pulled it all apart and soldered it back together, works like new.
89 4Runner
3" BL, M/T locks, 33"bfg mt, bilstein, Kayline, tubebumper, toyotafiberglass panels
TBI: Elocker,3.4 w/ORS,b+b,S2Sstg2cams,arias pistons,P+P intake,TRDs/c,URDpullies+7th,downey headers,MAPECU2,WEGO WB, SupraMAF,walboro255,stg4clutch, EPaOo2 sim
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Re: Low beam not working
[Re: Greg_Canada]
#1012313
11/19/10 12:01 AM
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Joined: Jan 2001
Posts: 11,595
Forum Moderator
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I know you fixed it, but also there is a fuse for each headlight. I ran across this myself.
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Re: Low beam not working
[Re: Adam F]
#1012314
11/19/10 04:10 PM
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Joined: Aug 2003
Posts: 2,854
OP
Roll Me Over
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I know you fixed it, but also there is a fuse for each headlight. I ran across this myself. Yup, popped those last year in the winter (oops?) then neither hi or low will work. If it's either high or low not working... check the plugs! Cheers, Greg
89 4Runner
3" BL, M/T locks, 33"bfg mt, bilstein, Kayline, tubebumper, toyotafiberglass panels
TBI: Elocker,3.4 w/ORS,b+b,S2Sstg2cams,arias pistons,P+P intake,TRDs/c,URDpullies+7th,downey headers,MAPECU2,WEGO WB, SupraMAF,walboro255,stg4clutch, EPaOo2 sim
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Re: Low beam not working
[Re: Greg_Canada]
#1012315
11/24/10 03:20 AM
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Joined: Jan 2001
Posts: 11,595
Forum Moderator
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Mine was weird....the headlight worked but was VERY dim...swapped it out and still dim. Replaced the blown fuse and all was good.
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Re: Low beam not working
[Re: Adam F]
#1012316
11/24/10 02:58 PM
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Joined: Aug 2003
Posts: 2,854
OP
Roll Me Over
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That's really weird... almost like the fuse still had a slight connection....
89 4Runner
3" BL, M/T locks, 33"bfg mt, bilstein, Kayline, tubebumper, toyotafiberglass panels
TBI: Elocker,3.4 w/ORS,b+b,S2Sstg2cams,arias pistons,P+P intake,TRDs/c,URDpullies+7th,downey headers,MAPECU2,WEGO WB, SupraMAF,walboro255,stg4clutch, EPaOo2 sim
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![[Linked Image]](http://www.4crawler.com/Images/HeadlightVoltage.jpg)
