Question about 2008 Toyota Sienna

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One headlamp won't light on my 2004Toyota Sienna; bright works!

I've noticed that one of my headlamps won't work and when switching to bright lights, the brights both work okay. I changed the bulb but the new bulb does the same thing... Could each lamp be fused independently? All other lamps work and function as they should. The contacts holding the bulb looks okay but wonder is anyone else is having this problem? I'm afraid I might get a ticket as I drive a lot at night. Help!

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  • 22 Answers

The answer to your question is in your question. Yes, the lights have independant fuses for each side and hi and lo beams.

Posted on Jul 13, 2009

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My headlights in my 94 GMC DONT WORK


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The voltage goes from headlamp switch to dimmer switch to headlamps. The top wires to headlamp assembly is voltage. The bottom black wire is ground. Use a test lite to check voltage and ground. w/o a little testing, I'm not sure how to help?

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Oldsmobile intrigue problems


The switch is bad >
Each headlamp is individually fused so that battery voltage is applied to the individual lamps at all times through circuit 1640 for the LH headlamps and through circuit 1740 for the RH headlamps. When the headlamp switch is in HEAD, the ground is applied directly to headlamp switch through circuit 1750. When the headlamp switch is placed in LOW, ground is applied to the low beam headlamps through circuit 1201. When the headlamp switch is placed in HIGH, ground is applied to the high beam lamps and to the high beam indicator through circuit 1200. The high beam indicator is fused so that battery voltage is applied at all times through circuit 640.

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Do you know how to do electrical testing using a DVOM- digital volt ohm meter or a test light ?

Low and High Beams Headlamps Inoperative
Step
Action
Value(s)
Yes
No
1
Was the headlight system check performed?
--
YES - Go to Step 2
NO - Go to Headlight System Check
2
Does flash to pass function normally in the headlight system check?
--
YES - Go to Step 3
NO - Go to Step 7
3
Does the autolamps low and high beam operate normally?
--
YES - Go to Step 4
NO - Go to Step 6
4
Turn the headlamp switch to the Head position and the headlamp dimmer switch to Low position.
Using a test lamp, backprobe between connector C201 terminal W and ground.
Is the test lamp on?
--
YES - Go to Step 5
NO - Go to Step 6
5
Repair poor connection or open in circuit 1750 between connector C201 terminal W and S283.
Is the repair complete?
--
Go to Headlight System Check
--
6
Replace the headlamp switch. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle for service procedure.
Is the repair complete?
--
Go to Headlight System Check
7
Repair poor connection or open in circuit 1750 between S283 and ground.
Is the repair complete?
--
Go to Headlight System Check

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1 Answer

Only bright headlamps no dim headlamps


fuses or switch bad or broken..

Dec 20, 2013 | Cars & Trucks

1 Answer

Dash lights do not work 2000 ford exploier


All go out at once, first check fuses,then dimmer switch for dash lights, finally headlight switch. To check dimmer switch, pull connection off back, on harness with test light and headlight switch activated, 1 of the leads should have power, if so, use ohm meter on dimmer to make sure it has reading between 0 and some value, if no value, open, dimmer is bad, if there wasn't power then check headlight switch, there should be heavier gauge wire that powers switch and 1 for output to hi/lo switch, smaller gauge wires for tail lamps, dash lights, license plate lamps, parking lights. The color wires from dimmer would correspond to the same colored wires on headlamp switch, probe that connection on headlamp switch with switch engaged and see if you have power, if not replace switch, if so, check wire from switch to dimmer.Now if the lights slowly went from bright one day, to less bright some other day, to not working, then the bulbs are bad... good luck...

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It is very possible you could've running with one burned out for a while and didn't notice uad a power serge or it's possible you have been running with one out for a while and didn't notice till the other went out. Try turning on the high beems if they work replace the bulbs..

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http://groups.yahoo.com/group/villagerquest/

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