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Joined: Jan 2016
Posts: 6
Cabrunet
New Member
Cabrunet Jan 5, 3:33am - #450946 
New Member
2003 Toyota Celica GT

Joined: Jan 2016
Posts: 6
CALIFORNIA
Help w/ Instrument Cluster & AC Not Working

2003 Toyota Celica...need help. Thinking I might need a relay diagram as my Instrument Cluster and AC not working. I can disconnect the battery cable and reconnect it, then the dash will light, if I restart the car within under a minute, everything stays on. If I wait a while and restart the car,everything goes dark. My A/C wont work or the light doesn't come on.

While the instrument cluster (tach, spedo, fuel, temp, door open indicator, etc) and AC stop working, I don't believe it's the cluster itself as it comes back on when I try the above. It is not a fuse.

No Gauges - everything on instrument panel dark
If I remove and replace Battery Cable the Gauges & AC light up and work, I can drive the car and all is ok.
Power off car for exactly 1 min. or more with doors closed, start car & no guages or AC again
If wait less than 1 min. (tested 30 sec. to 59 sec. ) to restart the car and all gauges and AC continue to work fine

Any ideas what the cause might be? Any suggestions on where to start diagnosing.

Your help is very much appreciated, thanks!
Joined: May 2002
Posts: 421
CaffeineKid
CelicaSpecialist
CaffeineKid Jan 5, 5:57pm - #450947 

CelicaSpecialist
2008 Scion tC

Joined: May 2002
Posts: 421
California
A few questions and a few basic steps to help locate your problem.

--

Have you recently replaced your stereo or had electrical work done on your vehicle where the gauge cluster was removed for any reason? Check that all connections are firmly pushed in and are not lose. Also confirm that no wiring was "clipped" between the panels. You may be shorting a cord. If you recently had some electrical work done by a 3rd party (or a Toyota repair center) confirm that they did not accidentally "clip" an electrical line while putting your interior back together.

--

Can you reproduce this problem every time when the weather is hot? How about when it is cold? You may have a fuse that is old or partially broken, where the electrical connection is "fair" after its been sitting for a while, but then goes "bad" after a bit of current has gone through it. I know this sounds impossible, but at this point, its just a step in troubleshooting.

1) have a quick skim through this page:
https://www.celicahobby.com/forums/...e-room-and-center-junction-diagrams.html

2) Pull and replace the [interior] Center Junction Block Fuses # 12 and 19, 20, 21, 22 with known good fuses. Fuse # 22 is the most likely cause, if your issue is fuse-related.

--

Have a quick look through this link:
https://www.celicahobby.com/forums/...-dont-work-are-they-fried.html#Post86523
Joined: Jan 2016
Posts: 6
Cabrunet
New Member
Cabrunet Jan 6, 5:21pm - #450953 
New Member
2003 Toyota Celica GT

Joined: Jan 2016
Posts: 6
CALIFORNIA
I have checked all my connections, fuses, relays modules. Everything is plugged in firmly.
I have not had any stereo or electrical work done recently. I bought the car brand new in 2003 and the only work I had done was in 2006 when a squirrel was living in my engine compartment and chewed up my AC wiring. First Toyota bill $500. AS mentioned, the squirrel was living there, so he did it again and second bill (within a two week period) was $300. That was years ago and everything has worked fine up until now.

I did have an issue when weather was extremely hot here in CA (over 105 degrees) engine would chug and strain when starting. I would put it into gear quickly for the engine to start. That problem resolved itself when the weather cooled. The weather now is in the 50's, and only now am I experiencing the issue.

The check engine light had come on, but I reset it.

I LOVE my car but can't drive it without a tach, speedo, gas gauge or headlights (have to turn them on manually to get them to work).

I appreciate your time , suggestions and attention. Thank you.
Joined: May 2002
Posts: 421
CaffeineKid
CelicaSpecialist
CaffeineKid Jan 6, 5:45pm - #450954 

CelicaSpecialist
2008 Scion tC

Joined: May 2002
Posts: 421
California
Have you had any of your friends from your husband's car group (CorvettesLimited.org) assist you with the electrical issues? It seems that they would be the very most helpful to you, as they are right there with your vehicle. They can see whats happening when you reproduce the issue for them. Many classic Corvette owners are also very knowledgeable people. AND, you know them, they know you.

https://www.celicahobby.com/forums/...uster-and-ac-not-working.html#Post450952

Originally Posted by Cabrunet
Thanks for the update. I'm continuing to troubleshoot and experiment. I'd like to fix it myself, if possible. If I find anything out, I'll let you know.
Being female, I really don't want to go to the dealer... they are, unfortunately, my very last resort.


If you believe you are being treated differently because of your gender, you need to report the technician who is discriminating you, to their supervisors or higher-ups. Both women and men bring their vehicles in for repair. No one is expected to know every mechanical detail and troubleshooting procedure about their vehicle. Especially not in 2016!
Joined: Jan 2016
Posts: 6
Cabrunet
New Member
Cabrunet Jan 6, 6:46pm - #450955 
New Member
2003 Toyota Celica GT

Joined: Jan 2016
Posts: 6
CALIFORNIA
Most of the CL members just drive their cars, they don't work on them themselves, unfortunately. They take their cars to be serviced. I've taken basic auto mechanics classes and like to work on my own vehicles. I have posed the question to several friends and both car clubs (Corvettes Limited and Stadt Der Rosen VW car klub). I have friends trying to help but to no avail so far. I figured this forum might be a little more knowledgeable since there's more familiarity with the actual Celica. I'll continue to read, trouble shoot and go through shop manuals to see if I can find anything out. Don't get me wrong, my husband is helping me, but we're both stumped at this point. As far as gender discrimination, I've solved that problem by having my husband take the care in. The bills have been much cheaper with no upsell for a battery, oil changes, tires, tire rotation, coolant flush, hose & belt checks.... I do all that by myself. Thanks again.
Joined: May 2002
Posts: 421
CaffeineKid
CelicaSpecialist
CaffeineKid Jan 6, 7:05pm - #450956 

CelicaSpecialist
2008 Scion tC

Joined: May 2002
Posts: 421
California
I really wish I could give you more information, but electrical issues are quite difficult diagnose if they cannot actively be troubledshooted. ie; in real life. Especially when your issue was caused by an animal living in your engine bay, twice. And it was repaired by two separate technicians over the past decade.

Knowing this, my very best advice to you, would be to bring your car in to a skilled Toyota electrical technician (this doesnt necessarily mean, "a Toyota tech at a dealership"). Explain in detail; The history of your problem; What you are doing to recreate the issue; And what was done in the past to correct it. Then let the tech have fun with your car for the day/week.
Joined: May 2002
Posts: 421
CaffeineKid
CelicaSpecialist
CaffeineKid Jan 6, 7:18pm - #450957 

CelicaSpecialist
2008 Scion tC

Joined: May 2002
Posts: 421
California
Two additional things to note:
1) check your fuses again.
2) pull your your gauge cluster and disconnect both plugs from the back of the cluster. One plug is white and the other is blue.
start your car.
Is it doing the exact same thing as before, or are more features on your dash no longer working.
If it does exactly the same thing, then you may have something shorted in your gauge cluster which is stopping your instruments, center console, climate controls, radio, DRL, dimmer, cabin lighting...etc, from functioning correctly.
--also, check the gauge-dimmer dial is set to MAX ON, and not turned down. Its the dial to the left of your steering wheel.

As linked in my previous post above, skim through Isaac's reply and follow those directions to rule out those possible issues. You may need to spend $300 for a new gauge cluster. Or pull one out from a wrecked Celica at a junk yard (same class are your current one. ie; GT for GT. GTS for GTS)

I only mention this, because you've stated that you had prior electrical work done on your Celica. I have no way of knowing what "fixes" those tech used. And if they were correct, or just band-aids to stop a very specific problem from happening.
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