Left And Right Headlights Not working

Vehicle is 2004 Chevrolet Impala.

Problem is left and right headlamps nt working,but all other lights functioning right.

Troubleshooting details:----

First confirm the headlamp controlling fuses are not blown.
Next check the headlamps,are they blown or are they powering up right if you try them connecting anywhere else.
If both bulbs and fuse checked ok,

Then the issue can be with faulty headlight controlling relay.
These relay is located in the left side dash junction box.It will be on the driver side end with the door open.Also there will be the Access panel to be removed.Once the panel is dismounted,the internal fuse box diagram will be seen.It will give accurate info of which fuse and which relay is for what purpose.

These details will help
Thanks

2007 Dodge Caliber: Low Beam Headlight Not working

Solution For Low Beam Headlight Problem

CASE HISTORY:----
IN THIS CASE
The right side low beam works,but left side low beam is not working.

The low beam bulb is tested good.The left side high beam works good.

Only left side low beam not working.

THE SOLUTION STARTS HERE:----

In this case it can be faulty bulb plug in the socket.Inspect the plug in the socket.Each plug has 3 wires.There are 2 bulb sockets.Check both sockets with a meter and you should get  11.4v to 12.0v on each outside wire and a good ground on the center wires.If you have this tested ok then you are sure that there is voltage and problem is with main module.
But if there is no voltage to this wires then issue with short in wiring.You have to rewire from main module to the socket.

BUT IF YOU HAVE VOLTAGE TO THIS PLUG WIRES.THEN FURTHER TROUBLESHOOTING IS AS FOLLOWS:-------
The module which controls this light and light gets command from this module.Its called TIPM.
The TIPM is the module/fuse box under the hood (TIPM stands for Totally Integrated Power Module). It's the back plastic box  located up in the left front corner of the engine compartment. Mostly you have seen it but probably not familiar with the TIPM terminology.
Here is what the details below will make you understand its working theory.

• What voltage you're seeing on this wires is diagnostic voltage. It's put out on the circuit by the TIPM (module/fuse box under the hood) to check for open circuits. The presence of the diagnostic voltage there tells you that the wire from the TIPM to the bulb is good. There is diagnostic voltage on all bulbs at all times no matter if they are turned on or not, you would see this voltage everywhere.

• Diagnostic voltage has no current and won't light any light bulb, so testing of these circuits could only be done with a test light. A voltmeter will show you the diagnostic voltage, which is good in it's own way - if there is diagnostic voltage there then you know the wire is good.But to make the bulb work,the TIPM should work.

• Since bulb is good and tested OK/working in other socket.And now diagnostic voltage test shows wire is good.So as per this  the problem has to be in the TIPM. 

In this case the first thing I would recommend is disconnet the battery for a couple minutes.

This is a system reset procedure.The cars computer system gets reset every time the battery terminals are disconnected.

If the TIPM sees current draw go too high on a circuit it will set a fault code and disable that circuit. Disconnecting the battery would clear any fault codes in the TIPM if they are set and may restore operation of your headlight.

BUT
If  system reset procedure is not helping.Then you are confirmed that problem is in the TIPM, the low beam driver has failed. The TIPM would need to be replaced if that's the case.

The TIPM is a costly part.It will cost Approx $800.
There are two possible TIPM's for your vehicle and it will need to be ordered by VIN. The part has to be ordered by dealer.There are few auto parts store which deals in such parts.But i suggest you to order the part by dealer.i agree the part is costly at dealer and cheaper at other auto parts store.But at dealership you get original part and its actually for your car brand model.
but if you are getting Aftermarket part with good warranty and its working good,then you can order that too.

This details will help.
Thanks.

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Headlight Assembly Removal On Honda Accord

Please Note.To remove headlight assembly the Front bumper has to be removed.

The procedure for 2001 and 2002 Honda Accord.
Also view this For complete procedure to remove bumper and headlight assembly,follow the procedure below:--------

The front bumper needs to be removed to replace the headlight assembly. Here's how to do it.

There are four bolts behind front bumper that are visible through the slots in the bumper.

Loosen the bolts from behind the front bumper with a socket wrench, and remove them from the bumper.


The diagram will help you to locate screws and fenders




Also remove the screws in the wheel well.This screws hold the bumper to the vehicle frame on the same side as the headlight.
Remove all  the screws that are holding the bumper to the frame, using a screwdriver, so that you can pull the bumper away from the headlight.
see one more help diagram

To Remove the front bumper to access head light assembly
Disconnect the connectors (Marked as A).
Remove the 5 mounting bolts (Marked as B), then remove the headlight assembly which is marked as C.



Once the bumper is removed you will remove three 10mm bolts from the brace on the bottom then the two 10mm bolts on the top. Once unbolted disconnect the bulb connectors.


This details will help.
Thanks.

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2002 Toyota Tacoma: Low Beams not working?

Both the Low Beam  Head Lamps not working.But High beam Lamps are working fine.

Yes in this types of cases you will notice that ,high beam indicator is on with light switch in the low beam position.

The high beam indicator is on when the switch is in the low beam position and it stays lit when you switch to the high beams. And the high beams work.

So all in all High beams works fine,but low bean not working.

According to the wiring diagram the only way the highbeam indicator can illuminate is, if the wire that goes up to the headlight switch is not being grounded through the headlight switch. If you remove the two screws behind the steering wheel by turning the steering wheel left and right then the one screwed from down underneath the two halves of the plastic column cover will separate. This will expose the electrical connector going to the headlight switch assembly.
Using a jumper wire attach one end of the jumper wire to a good ground metal surface under the instrument panel.
Then take the other end of the jumper wire and back probe this red wire with a green tracer which is pin number 17.
With the headlight switch in the ON position this wire should have 12 Volts and when you apply ground to it, then it should cause the headlights to illuminate and make the highbeam indicator go out. If it does then you know for certain the problem is in the headlight switch assembly. If you have no power to this red wire with a green tracer this means the bulbs are bad or one of multiple connectors between that point in the headlights themselves is open or disconnected.

Checking and inspecting the details mentioned,will help you to confirm the problem.
This details will help.
Thanks.

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How to replace headlight bulb on 1999 Pontiac Grand AM?

The are 2 different set ups on the Grand Ams. On one of them, there are 2 bolts on the top of the light. Take them out to remove the headlight assembly. On the other style there are 2 clips on the back side of the light that you have to pull straight up to unclip.This procedure below will help,First lift the hood, Now exactly above the headlight adjusting screws there will be two sheet metal tabs. Its inverted "L" shaped. Pull up on them and the headlight assy will pull straight out the front.If its too tight to pull then use pair of pliers. Now Unscrew the plastic collar. The bulb socket has a latch on the side, then the bulb will pull out easily.Turn the headlight bulb socket counterclockwise to remove it from the assembly, and then detach the electrical wiring connector from the back of the socket.
It will hardly take any time.
Do it slowly and carefully,the clips and other parts are delicate,can break,if force is applied.

This details will help.

Thanks.

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