My diagnostics screen in my 94 q45t dont turn on..help..

[jose310]

i have checked all the fuses and they all work, my check engine light is on..and ive been trying to check the diagnostics with the code reader ..but it dont detect or bring up any codes on the code reader..does anybody know how to light up the diagnostics screen. loose wire?

[Q451990]

By diagnostic screen - you mean the one on the dash? The dual trip meter that also says thinks like "OK" or "Tail Light Out"?

To my knowledge, the only codes you'll pull with that screen are transmission codes - and it's not done with a code reader.

The info screen on the dash is backlit by two bulbs, so if they're out - you won't see much. You might be able to shine a flashlight at them to see if the numbers are there - even though there's no light behind them to illuminate them.

Good luck!

Heath

[jose310]

yeah on the dash...and also my mileometer dont work...

[96Qowner]

You could try replacing the bulbs - easy to do once you get the cluster out. Here's an old thread on the subject. Be sure to read the threads in my post there, too. Lot's of detail.

zerothread?id=232449

Mileometer? You mean the trip odometer on the bottom right, or the main one? If it's the main one you might need a new (used) cluster. If it's the trip ones, you just need bulbs.

[jose310]

both aint working.