Computer readout showing gibberish???
Thread Starter
Intermediate
Joined: Jun 2005
Posts: 39
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Computer readout showing gibberish???
My 2004 ZO6 (out of warranty) all of a sudden is displaying letters, numbers etc…on the display and I can’t clear it? I disconnected the battery with no luck. Has anyone had this happen and if so what corrected it?
Le Mans Master
Joined: Aug 2005
Posts: 7,201
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From: DP(oh you know where) IL
St. Jude Donor '06
only way to clear codes is to go into the DIC and clear them. brb on the info
here is the info you are looking for i believe:
http://forums.corvetteforum.com/show....php?t=1514518
here is the info you are looking for i believe:
http://forums.corvetteforum.com/show....php?t=1514518
Last edited by DPG; Nov 17, 2006 at 12:54 PM.
Drifting
Joined: May 2000
Posts: 1,917
Likes: 3
From: Southern NH
Jibberish would tend to mean that the serial data is being corrupted somewhere. Has anyone worked on the car in the dash area lately? Assuming it's not the source (i.e. PCM, BCM, etc.) I would first check the serial data connection to the dash area - maybe the connector is not firmly in place.
Le Mans Master
Joined: Aug 2005
Posts: 7,201
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From: DP(oh you know where) IL
St. Jude Donor '06
Originally Posted by JC in XTC5
Jibberish would tend to mean that the serial data is being corrupted somewhere. Has anyone worked on the car in the dash area lately? Assuming it's not the source (i.e. PCM, BCM, etc.) I would first check the serial data connection to the dash area - maybe the connector is not firmly in place.
Thread Starter
Intermediate
Joined: Jun 2005
Posts: 39
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still there
it is displaying across the screen ^ ^ ^ ^ ^
and it will go throught the functions but you cannot read them example is the fuil reading will look something like F^^L * ^ 023 ^^
Any ideas?
and it will go throught the functions but you cannot read them example is the fuil reading will look something like F^^L * ^ 023 ^^
Any ideas?
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Le Mans Master
Joined: Dec 2003
Posts: 5,561
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From: Atlanta metro Ga.
My guess would be the character-generator chip on the IPC (Instrument Panel Cluster - it contains complex circuitry, it is not a "dumb" component) has failed or is shorted. Any chance moisture entered the car?
Thread Starter
Intermediate
Joined: Jun 2005
Posts: 39
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Thanks,
Two things, the car is now in a high humidity area and my ac display one morning had condensation inside. The ac acted funny for about two hours until it cleared up.
I lift the batter disconnected over night and when I connected it the computer came up but was in Franch. I changed it and it looks good for now.
Thanks for all the great help. Not sure the problem is fully addessed but you guys have saved me some money for now...
Thanks,
I lift the batter disconnected over night and when I connected it the computer came up but was in Franch. I changed it and it looks good for now.
Thanks for all the great help. Not sure the problem is fully addessed but you guys have saved me some money for now...
Thanks,
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
Originally Posted by Aggie #5
Two things, the car is now in a high humidity area and my ac display one morning had condensation inside.
Thanks,
Thanks,
High humidity?? High humidity can cause electrical connection corrosions which can lead to interment connections and poor communications.
Racer
Joined: Apr 2005
Posts: 310
Likes: 1
From: Sterling Virginia
Originally Posted by Aggie #5
it is displaying across the screen ^ ^ ^ ^ ^
and it will go throught the functions but you cannot read them example is the fuil reading will look something like F^^L * ^ 023 ^^
Any ideas?
and it will go throught the functions but you cannot read them example is the fuil reading will look something like F^^L * ^ 023 ^^
Any ideas?
I'm trying to figure out what it would be that would require me to shut down and restart to clear it, as opposed to clearing after it warms up while still on?
-Rich
Thread Starter
Intermediate
Joined: Jun 2005
Posts: 39
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OK thought problem was fixed but came back from out of town and started car and computer was back to its garble... If I reset the computer by disconnecting the battery it seems to clear it up temperaraly. go figure... my have some connection problem.
Drifting
Joined: Oct 2004
Posts: 1,384
Likes: 8
From: Southwest Virginia
Originally Posted by Dan_the_C5_Man
My guess would be the character-generator chip on the IPC (Instrument Panel Cluster - it contains complex circuitry, it is not a "dumb" component) has failed or is shorted. Any chance moisture entered the car?
Sounds like your IPC board is starting to fail. Will probably mean replacing the IPC or the main board in the IPC. The DIC controller is not connected directly to the serial data buss, it is controlled from the microprocessor in the IPC. From my little time of studying this it appears to be a Phillips chip very similar to the Hitachi HD44780 LCD controller. But it appears that the DIC controller maybe SPI controlled since they use a SPI controlled serial EEPROM in the IPC to store milage. I would love to find a schematic for these IPC to know exactly how they work if anyone knows where one could be found!
