Fuse box diagrams no headlights or tail lights

CCARTY

MEMBER
2006 TOYOTA TACOMA
160,000 MILES

No headlights or tail lights and all the fuses and relays are good I also used a jumper wire in the fuse panel and I think I touched 2 live wires cause that's when the problem started! I thinks power is back feeding through the circuit because I can put my power windows up and down without the ignition being on! Tried a new headlight switch that wasn't it also got a new fuse panel but when we started to take old one out we noticed there were no melted or burnt wires so we put it back together! I need help because my mechanic is at a loss!

7 Replies

HMAC300

MECHANIC
48,601 POSTS

I am taking it that you checked all fuses and relays in lh an d rh and underhood fuse boxes because there are fuses for all of them in those. there is also a body ecu one in j/b1 tha t cold have been damaged. Other than that without spending time on this this is the only answer I can give. I am also assuming that your truck has the factory installed trailer wiring as they are different. here is a guide to help with the fuse panel diagrams below.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (Below). Please let us know what happens.

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Sunday, August 18th, 2013 AT 8:26 AM

CCARTY

MEMBER
2 POSTS

Yes it has factory installed trailer wiring and those are good also!
I only knew of two fuse panels one under hood by the battery and one in the cab under dash by the driver door! Where is that ecu at and what does j/b1 stand for?

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Sunday, August 18th, 2013 AT 9:43 AM

HMAC300

MECHANIC
48,601 POSTS

Junction block 1 is on the lh side of dash there are two or three wires going to ecu. This is screwy as hell i'm sending a few pics from what the wiring diagram and actual fuse box stuff says it contradicts itself lol. One is of the underhood box sheikh I've pointed to try replacing relays with like ones and the other is drivers side which has ecu as well as another relay there.

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Sunday, August 18th, 2013 AT 10:19 AM

MINERMAN

MEMBER
1 POST
2005 TOYOTA TACOMA
6 CYL
4WD
AUTOMATIC
44,000 MILES

Can you tell me where the fuses are and what they go too?

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Saturday, May 8th, 2021 AT 5:49 PM (Merged)

KASEKENNY

MECHANIC
18,907 POSTS

I am attaching the diagrams below. Plus here is a guide that will help with this:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Plus here is a guide on how to test relays:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Please see the diagrams below and let us know what other info you need and we can go from there. Thanks

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Saturday, May 8th, 2021 AT 5:49 PM (Merged)

QUINTONSDUSTY

MEMBER
1 POST
2001 TOYOTA TACOMA
2.4L
4 CYL
2WD
AUTOMATIC
92,000 MILES

Location of the power accessory fuse.

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Saturday, May 8th, 2021 AT 5:49 PM (Merged)

STEVE W.

MECHANIC
12,972 POSTS

Your truck has two fuse and control panels. One is under the hood and contains the items shown in the first three images. The other panel is inside the truck to the left of the steering column behind the lower trim panel. It is shown in the last 3 images.
However fuses rarely fail for no reason so unless you know that it was because of something like a coin falling into a power outlet or similar then some testing may be needed.
This shows using a test light to verify the fuse is bad.
https://www.2carpros.com/articles/how-to-check-a-car-fuse

Please let us know what you find.

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