Fuel Check Gauge sender???

[cober]

Hello!
I have a real important question. And this problem never leaves my mind about a year or so...
Fuel Check Gauge lamp... Where from it takes data? What makes it turn on? I noticed that it's unlikely that takes it from intank fuel level gauge which goes on arrow gauge. Cause it shows - they two different senders. So where from if takes it?

 

[Fix4Dirt]

Hello!
I have a real important question. And this problem never leaves my mind about a year or so...
Fuel Check Gauge lamp... Where from it takes data? What makes it turn on? I noticed that it's unlikely that takes it from intank fuel level gauge which goes on arrow gauge. Cause it shows - they two different senders. So where from if takes it?

the check gage iirc turns on when there is low fuel, as that will light up to tell you to check any of the dash gauges, and isnt limited to gas, could also be coolant, etc (if i remmebr right) so when the float on the pump goes low, and the fuel gauge reads low check gage illuminates... let me know if this make sense i may not understand this right tho

 

[Mbrooks420]

I assume one of the computers tells it to turn on. The condition would be any gauge being reported back out of range.

 

[donalds]

The computer In fact can see The Fuel level in percentage
The computer controls the check gauge light Because the check Gage light comes on for all gauges Errors
I checked the wiring diagrams to confirm