Can't go on ** Dash
Thread Starter
Heel & Toe
Joined: Aug 2010
Posts: 16
Likes: 0
Can't go on ** Dash
Please help.
I'm walking until, I get this fixed. Well I think it beat me. I have taken everything out of the car. The complete Dash. I did everything on the Batee.com site. My dash lights up but I'm not getting any readings on anything its all 00's. I bought a red service manual and electrical supplement and I checked everything. Any help would be great. Someone must have had this problem????
I'm walking until, I get this fixed. Well I think it beat me. I have taken everything out of the car. The complete Dash. I did everything on the Batee.com site. My dash lights up but I'm not getting any readings on anything its all 00's. I bought a red service manual and electrical supplement and I checked everything. Any help would be great. Someone must have had this problem????
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
Are we supposed to use our powers of clairvoyance to determine what year Corvette you have? I have never had this power.
We owners have very limited means to work on the cluster electronics. The only schematic I have ever seen is on Batee's site and it is for the 1989 cluster. The cluster gets power from a voltage regulator IC and that is the second measurement you should make after you measure if the cluster is getting power and has ground on its connector pins. The next common difficulty on clusters is the high voltage power supply that operates the gas discharge 7 bar readouts. If that is ok, then you have to confirm that you have incoming signals that supply signals for rpm, speed, oil pressure, battery voltage, etc. Then you see if the IC's that process those signals and output to the 7 bar readouts are working. If you do not have at least electronic technician level skills, then you pack up the cluster and send it to a repair station and let them test it and repair it.
We owners have very limited means to work on the cluster electronics. The only schematic I have ever seen is on Batee's site and it is for the 1989 cluster. The cluster gets power from a voltage regulator IC and that is the second measurement you should make after you measure if the cluster is getting power and has ground on its connector pins. The next common difficulty on clusters is the high voltage power supply that operates the gas discharge 7 bar readouts. If that is ok, then you have to confirm that you have incoming signals that supply signals for rpm, speed, oil pressure, battery voltage, etc. Then you see if the IC's that process those signals and output to the 7 bar readouts are working. If you do not have at least electronic technician level skills, then you pack up the cluster and send it to a repair station and let them test it and repair it.
Le Mans Master
Joined: Sep 2006
Posts: 6,050
Likes: 147
From: Phoenix AZ
2021 C4 of the Year - Modified Finalist
sounds like the switches panel has lost a reference voltage, or a ground (on the DIC)
We are now at a place where you have to put it all back together, and start over.
If it has all zeros, the cluster is working, there is just no resistances for it to display such as
temp. volts are a different animal.
THe unit looks for resistance to ground to assimilate the readout processing. Except for volts.
Some resistance units like temp sensors use high resistance for cold, low resistance for hot.
Some are the other way. take a volt ohm meter, and check your coolant sensor on the rear right head.
Check it cold, then check it hot.
That is the reference "ground" that you need to supply to your dash.
We are now at a place where you have to put it all back together, and start over.
If it has all zeros, the cluster is working, there is just no resistances for it to display such as
temp. volts are a different animal.
THe unit looks for resistance to ground to assimilate the readout processing. Except for volts.
Some resistance units like temp sensors use high resistance for cold, low resistance for hot.
Some are the other way. take a volt ohm meter, and check your coolant sensor on the rear right head.
Check it cold, then check it hot.
That is the reference "ground" that you need to supply to your dash.
Last edited by coupeguy2001; Sep 2, 2010 at 01:19 AM.
Team Owner
Joined: Oct 2000
Posts: 96,443
Likes: 9
From: Fort Knox, KY
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sounds like the switches panel has lost a reference voltage, or a ground (on the DIC)
We are now at a place where you have to put it all back together, and start over.
If it has all zeros, the cluster is working, there is just no resistances for it to display such as
temp. volts are a different animal.
THe unit looks for resistance to ground to assimilate the readout processing. Except for volts.
Some resistance units like temp sensors use high resistance for cold, low resistance for hot.
Some are the other way. take a volt ohm meter, and check your coolant sensor on the rear right head.
Check it cold, then check it hot.
That is the reference "ground" that you need to supply to your dash.
We are now at a place where you have to put it all back together, and start over.
If it has all zeros, the cluster is working, there is just no resistances for it to display such as
temp. volts are a different animal.
THe unit looks for resistance to ground to assimilate the readout processing. Except for volts.
Some resistance units like temp sensors use high resistance for cold, low resistance for hot.
Some are the other way. take a volt ohm meter, and check your coolant sensor on the rear right head.
Check it cold, then check it hot.
That is the reference "ground" that you need to supply to your dash.
Eminently logical, coupeguy2001. I like the way mugs on this Forum be droppin' science bombs on *****.
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Le Mans Master
Joined: Sep 2006
Posts: 6,050
Likes: 147
From: Phoenix AZ
2021 C4 of the Year - Modified Finalist
Well, when you consider the complicated minds that designed the digital dash system, my simple mind just emanates the theoretical resolution that would prompt a conclusion based upon relatively available data that supports the theorism that electicity is an electron based entity that requires a measuring device that is recognized a a layman's term such as VOM.
In such limited terms, the VOM can be limited in it's use as to be defined by it's relative term, but it's use can be expanded to provide substantiating quantitative data that one may postulate by performing rudimentary functions such as resistance checks.
In such limited terms, the VOM can be limited in it's use as to be defined by it's relative term, but it's use can be expanded to provide substantiating quantitative data that one may postulate by performing rudimentary functions such as resistance checks.
Race Director
Joined: Nov 2003
Posts: 12,220
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From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
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Well, when you consider the complicated minds that designed the digital dash system, my simple mind just emanates the theoretical resolution that would prompt a conclusion based upon relatively available data that supports the theorism that electicity is an electron based entity that requires a measuring device that is recognized a a layman's term such as VOM.
In such limited terms, the VOM can be limited in it's use as to be defined by it's relative term, but it's use can be expanded to provide substantiating quantitative data that one may postulate by performing rudimentary functions such as resistance checks.
In such limited terms, the VOM can be limited in it's use as to be defined by it's relative term, but it's use can be expanded to provide substantiating quantitative data that one may postulate by performing rudimentary functions such as resistance checks.
Le Mans Master
Joined: Jul 2007
Posts: 5,356
Likes: 2
From: No HOA, New Hampshire
Cruise-In X Veteran
St. Jude Donor '09
Me too, I sent it out anyway. I received a display that works great except it tells me to up shift while I am in overdrive with an Automatic Transmission. The place I dealt with turned it around in 5 days and the car can be driven without the dash installed.
Thread Starter
Heel & Toe
Joined: Aug 2010
Posts: 16
Likes: 0
My dash
Well my dash is clear and bright but not working! I do know what's wrong with it. No signals from the ECM. I need a new ECM! One good thing is my dash is very nice and clear but the 8's don't help much. I contacted Bryan because after doing everything possible to the dash itself and adding all new grounds. I needed some more advice, needless to say I had to test the ECM to see if it was providing the proper output to the dash and I learned it was not sending any. Does anyone have a good ECM for sale?
I appreciate everyones input.
Ted
I appreciate everyones input.
Ted