Sys?
Thread Starter
Pro
Joined: Feb 2007
Posts: 538
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From: Orlando FL
Sys?
OK. I have a 95 LT1, and noticed that on the digital screen with the gas/speedo/and instant consumption - that where the diagnostic area is (instant consumption) every thirty seconds or soo, it blinks "SYS" on and off. What the heck is this? Anyone else ever have this??? 
Elite Torch Red Member
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From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
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St. Jude Donor '03-'04-'05-'06-'07
9 times out of 10 it's a weak battery. So check the battery, charge it up if needed or replace with a new one. Don't rely on the alternator to charge it up.
How often do you drive the car? If not often, invest in a battery tender.
The other possibilities are from installation of an aftermarket stereo or I think CCM trouble(or something like that).
But more than likely the battery.
How often do you drive the car? If not often, invest in a battery tender.
The other possibilities are from installation of an aftermarket stereo or I think CCM trouble(or something like that).
But more than likely the battery.
Burning Brakes
Joined: Jul 2006
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From: Sulphur LA
it means that there are codes stored in your CCM (central controll module) this is the device that has controll of your dash, chimes, interior lights, etc. There was a topic a while back on how to pull codes from it, just a simple matter of jumping two terminals in the aldl and pressing a few buttons......
Elite Torch Red Member
Joined: Sep 1999
Posts: 57,805
Likes: 23
From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
CI 1-2-3-4-5-6-7-8-9-10-11-12 Vet
CI-II Burnout & Drag Champ
St. Jude Donor '03-'04-'05-'06-'07
it means that there are codes stored in your CCM (central controll module) this is the device that has controll of your dash, chimes, interior lights, etc. There was a topic a while back on how to pull codes from it, just a simple matter of jumping two terminals in the aldl and pressing a few buttons......
Elite Torch Red Member
Joined: Sep 1999
Posts: 57,805
Likes: 23
From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
CI 1-2-3-4-5-6-7-8-9-10-11-12 Vet
CI-II Burnout & Drag Champ
St. Jude Donor '03-'04-'05-'06-'07
There you go, be sure that they are switched off first with the slider bar, then check the door and hatch switches to see if they are broke or pushed in. The interior lights can(and have in my case) drain the battery overnight.
Safety Car
Joined: Feb 2002
Posts: 4,212
Likes: 10
From: Sun City West Az
Most anytime you drive around with a pulled fuse, you'll get the "sys" flasing on the display.
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Elite Torch Red Member
Joined: Sep 1999
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From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
CI 1-2-3-4-5-6-7-8-9-10-11-12 Vet
CI-II Burnout & Drag Champ
St. Jude Donor '03-'04-'05-'06-'07
Le Mans Master
Joined: May 2005
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From: Queensland, AUSTRALIA
it means that there are codes stored in your CCM (central controll module) this is the device that has controll of your dash, chimes, interior lights, etc. There was a topic a while back on how to pull codes from it, just a simple matter of jumping two terminals in the aldl and pressing a few buttons......
On a 94/95 you can check the codes with a paper clip as follows:
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 the codes,
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
Elite Torch Red Member
Joined: Sep 1999
Posts: 57,805
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From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
CI 1-2-3-4-5-6-7-8-9-10-11-12 Vet
CI-II Burnout & Drag Champ
St. Jude Donor '03-'04-'05-'06-'07
WHen my hatch switch was plugged in and malfunctioning, the security light would flash, then the horns would go off at like 3:00 am, and if the lights came on, the battery was dead the next morning. Ayt first I just pulled the fuse, but then I had no radio. There are two fuses for the interior lights.
Le Mans Master
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From: Queensland, AUSTRALIA
Drifting
Joined: Sep 2005
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From: Pasadena Maryland
That's my point. The OP stated that INTERIOR lights stay on. My hatch only lights the cargo lights, not all the interior lights. If all the interior lights stay on it is NOT hatch related.