Anyone ever seen this silly thing? I just got it running again with some ingition problems and now see this displayed in my cluster (never seen it before). I'm sure this thing will somehow cost me several hundred $$'s.

 

there was another post about this about 2 weeks ago, cant say ive ever seen it on my 94. what is actually wrong with the car??

 

Nothig now...just got it all back together and running...only have this silly little "Sys" thing staring at me.

 

http://forums.corvetteforum.com/show...33&forum_id=48

Have a look here mate, the ALDC on yours is different though,
its pins 4 and 12 you jump on a 94 then turn on the key but dont start the engine. the pins count from top left being 1, and bottom right being 16. 4 is right above 12 on the conector.

 

Here's all the info youll need to clear it

How to View Stored Diagnostic Codes on 1994 – 1996 Corvettes

You display codes on the digital LCD speedometer readout, by using a re-shaped paper clip to short ALDL pin 4 to pin 12.

1994 – 1996 Corvette ALDL connector:



You short pin "12" to pin "4" and turn the ignition switch to "On" without starting the engine.

The speedometer will display any codes using the same protocol as the 1990-1993 model but there are some changes in the designation for the modules plus additional modules are added:

Module "1" is still the CCM module.

Module "4" is now called the PCM module (Powertrain Control Module) because automatic transmission computer control was added to Engine Control Module in 1994.

Module 7 (on the 1996 model only) is the RTD module. (This is the Real Time Dampening module which replaced the Selective Ride Control module in 1996).

Module 9 is the ABS/ASR module number from 1994 through 1996.
Finally, Module "A", the DERM (Dynamic Energy Control Module --- (the air bag control module) will be requested to show any codes.

Just like the 1990-1993 display, you read the codes on the speedometer (big) and read the module number on the trip odometer (small).

A series of dashed lines for instance “ - - -“ indicates no more stored codes for that module.

A code showing as “C12” for the CCM module (module #1) means no codes are stored. So C12 is a good thing to see.

Again, you can cause the codes to repeat by turning the ignition off for five seconds and then back on.

Turn the ignition off and remove the short to restore normal operation.

To clear codes in the CCM proceed as follows:

1. With ignition "off" ground terminal #12 of the DLC (use bent paper clip to connect pin 4 to pin 12)

2. Turn ignition "on".

3. Press trip/odo button on the DIC until 1.7 appears in the trip
monitor area of the instrument cluster.

4. Press eng/met button on the DIC & hold until "---" appears in the
speedometer area of the cluster, this will clear CCM DTC'S.


To clear PCM/ECM codes do the following:


1. Press the trip reset button on the DIC until the desired system is displayed. In this case it will be 4.0.

2. Press trip/odo button on the DIC until the desired diagnostic mode(4.7) is displayed on the trip monitor area of the cluster.

3. Press & hold the eng/met button on the DIC until "---" is
displayed in the speedometer area of the cluster, this will clear PCM codes.


To clear ABS/ASR codes do the following:

Same as above but you’re looking for “9.7” on the trip odo

 

On my '94 it was flashing 'SYS' when the battery was going, you may want to check the condition of your battery.

 

could be that, but mine didnt do it with a flat battery, id say you have a code or 2 lurking in there somewhere, check for them,and note which codes, then clear them all out. Any problems will log codes next time you drive the car

 

My '95 flashed SYS for the better part of 9 months... It was only the front temp sensor. I thought all along it was the stereo I put in.

 

OK...it could be a couple of those things. I have the belt and everything disconnected as I am working on the ignition and opti here. I have run the battery down turning it over and letting it run. Also...no water pump on right now...to be able to pull the opti off and on several times. I'll get buttoned back up and charge the battery....erase the codes and see if it pulls any more. Thanks agian...always good info on here....I love this place!!!!

 

Mine was flashing too after the battery was drained while working on the car.I just ran it a while and disconnected the neg battery cable to reset.