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Classic Car Service
Classic Car Service, Dealership Svc. Mgr.
Category: Car
Satisfied Customers: 4851
Experience:  Over 30 years experience in the automotive field
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On my 2006 Scion XA, after I hooked up the battery nothing is working

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My 2005 Scion XA broke a belt. I replaced it and the plugs. I hooked the battery back up and now the RPM, gas, odometer and MPH gauges aren't working along with the AC, radio, mirror and all door controls.

Toyota Service :

Hello. Welcome to Just Answer.

Please remove the 15 amp "AM2" fuse from the fuse box under the hood and install a spare 15 amp fuse in its place; advise if anything starts to work; thanks

JACUSTOMER-rq9f9y9g- :
No change
Toyota Service :

Please locate the 10 amp GAUGE fuse under the dash, replace it with a spare fuse.

You have a power distribution problem. For all of the items you have listed to be inoperative, you have a bad fuse in the system. Do you have a 12 volt DC test light?

JACUSTOMER-rq9f9y9g- :

No I don't

Toyota Service :

If there is no change with the Gauge fuse, locate the 60 amp MAIN fuse in the fusebox under the hood and examine the interior of it very closely. This fuse powers the AM2 and the Gauge fuses

I need you to tell me, as I cannot see the 60 amp MAIN fuse, if it has an open filament or not.

If this fuse is bad, which it probably is, you will not have power in the sub-fuses that it allows power to flow into. This is where a 12 volt DC test light would be very valuable.

The test light would tell you if you have power in the fuses. We need to back trace where the power is being stopped by an open circuit.

JACUSTOMER-rq9f9y9g- :

There is no 60 amp fuse in the box under the hood

Toyota Service :

There are 2 fuse boxes under the hood. One with smaller fuses in it, that is what you are looking in. The one you need to examine is the one that has 4 large fuses, nothing else..

Look for a box on the driver side of the engine compartment, near the firewall

In this box there will be 2 or 3 60 amp cartridge fuses, and a 120 amp cartridge fuse They are markedly bigger than the fuses in the other box

These fuses are what we used to call 'fusible links'. They are plastic boxes with a silver wire inside of them. The silver wire is the actual fuse. If it is broken, the fuse is blown.

The wire could also be copper colored.

I will check back later to see if you have checked the fuses I am speaking of.

JACUSTOMER-rq9f9y9g- :

They look fine

Toyota Service :

That is good.

The next thing we have to do is do some real-time electrical diagnosis. Without doing this, we will be unable to see why you have no power to your gauges and your other things. You are going to need to get a 12 volt DC test light, or a 12 volt DC voltmeter. Is this possible?

JACUSTOMER-rq9f9y9g- :

I guess so

Toyota Service :

When you obtain the test light, attach the clip end of it to a good body ground; shiny metal. Turn the key on, and touch each side of every fuse under the dash. The test light should light up when you touch the metal part of the fuse. When the light lights up on only one side, that fuse is blown.

JACUSTOMER-rq9f9y9g- :

Ok

Toyota Service :

If the gauge fuse has no power on either side, you must then check the AM2 fuse for power. After you do that, please get back to me with the results of your testing. I expect you to find a bad fuse.

Electrical diagnosis takes time, and must follow a specific path in order for us to succeed in fixing the problem

JACUSTOMER-rq9f9y9g- :

On the outside small fuses I'm getting a current on all but the 7.5 a/c2. I'm not getting any current on the inside fuses

There are 3 fusible links on the inside and they all look fine

Could this be a relay?

Toyota Service : Double check big fuses, see if you have power going to them.
Not a relay, replaces do not power the fuse busses.
JACUSTOMER-rq9f9y9g- :

How do I check them as they have plastic caps covering them

OK I took off the caps, plugged them back in and touched it with the checker and no current on all 3
Toyota Service : No current in any of the 60 amp fuses? How about the 120 amp fuse? Does it have power?
JACUSTOMER-rq9f9y9g- :

I changed out the big fuses...I don't see any 60 or 120 amp

There was a 50, 40 and 30 on big ones then the small ones

I looked all over only 1 box under the hood and 1 under the dash

That is all that shows in the owners manual too

Toyota Service :

Do you have power in the AM2 fuse in the fuse box under the hood?

JACUSTOMER-rq9f9y9g- :

With it on I got current in all small fuses under the hood

None under the dash

Toyota Service :

No fuses under the dash have power?

JACUSTOMER-rq9f9y9g- :

No. I grounded to a bolt by the pedals

Toyota Service :

When you say you have current in the fuses under the hood, you are saying you have current on both sides of the fuse, correct?

JACUSTOMER-rq9f9y9g- :

Yes

Toyota Service :

And you are saying that you do not have any power in any fuse under the dash, correct?

JACUSTOMER-rq9f9y9g- :

Yes

Toyota Service :

Please look under the hood. Locate the driver side shock tower/inner fender.

JACUSTOMER-rq9f9y9g- :

What does it look like?

Toyota Service :

Towards the engine, on in that area, there should be a small box. This is your second/main fuse box.

JACUSTOMER-rq9f9y9g- :

Do you mean the red box hooked with the positive cable?

Toyota Service :

The rounded metal inner-fender that is next to the front strut on the engine side

Do you have the ability to take and post a picture of your engine compartment?

JACUSTOMER-rq9f9y9g- :

Yes

Toyota Service :

That would be beneficial.

I have the factory wiring manual in front of me. The box is shown in the diagram. It sure sounds like you have a blown main fuse.
JACUSTOMER-rq9f9y9g- :

Ok

Full Size Image

Fuse box under hood

Toyota Service :

Ok. Straight back from this box, towards the windshield...look for a small black box

The 60 amp fuses are not in this box.

Rectangular box

JACUSTOMER-rq9f9y9g- :
Full Size Image

I'll look

JACUSTOMER-rq9f9y9g- :
Full Size Image

This is next to the strut behind the fuse box

Do I need to take out the battery?

Full Size Image

Ok, I think I found it but have no idea where the fuse is on it

Toyota Service :

No

That is a wiring connector

Windshield

Firewall

Open space

Fuse box

Open space

Fuse box in the picture

Battery

JACUSTOMER-rq9f9y9g- :

Did you see the last pic, I took out the battery to get a better look

I didn't understand your last comments

Toyota Service :

No, that last picture is a wiring connector

Please take a picture of the area between the fuse box and the firewall; driver side

OK; lets try this.

The fusible link block is where you need to look for the 60 amp fuses.

Let me know if you find it and if any are blown.
Customer: replied 5 years ago.

Ok, I'll look for it this afternoon when I get off work..

Please let me know if you need anything else. You have a great day.

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