flashing 5y5 code
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
good question.
The code really means SYS - which means that the code is stored in the CCM. Normally, that means the battery is low.
If you have an aftermarket audio system, it means that the CCM is looking for the factory head unit, and isn't finding it.
There are any number of causes, but those 2 are the most popular.
You need to pull the code, and I don't remember which pins are to be jumped on the later C4s (OBDII).
The code really means SYS - which means that the code is stored in the CCM. Normally, that means the battery is low.
If you have an aftermarket audio system, it means that the CCM is looking for the factory head unit, and isn't finding it.
There are any number of causes, but those 2 are the most popular.
You need to pull the code, and I don't remember which pins are to be jumped on the later C4s (OBDII).
Thread Starter
Intermediate
Joined: Mar 2001
Posts: 28
Likes: 0
From: Vero Beach, Florida
the car has been sitting a while and needed to be jumped. I have jumped it several times in the past, but never had this code. I put an after market radio a couple years ago. So I should reset the sys. (how ?) and if it happens again probably have the battery checked ?
Thanks for your help !!!
Thanks for your help !!!
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
I will have to dig out the info on resetting. It's all about the pin jumping.
For the most part, disconnecting the battery for about 10 minutes should clear them. If you had to jump it, I would bet on the code being a dead battery code. Also, if the battery is old, either get a charger on it, or replace it. A weak battery will kill an alternator faster than fast.
For the most part, disconnecting the battery for about 10 minutes should clear them. If you had to jump it, I would bet on the code being a dead battery code. Also, if the battery is old, either get a charger on it, or replace it. A weak battery will kill an alternator faster than fast.
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From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
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I'm betting on the battery.
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Safety Car
Joined: Feb 2002
Posts: 4,212
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From: Sun City West Az
It may very well be the bat. However, I just went through this when I pulled the fuse on my courtsey lights to do some interior cleaning and forgot to replace it. Anyway, The CCM sensed the defaulted circuit and gave me the SYS. Any circuit that the CCM senses and finds a problem will give the code. Check your Helms for those circuits if your bat. checks out OK.
Elite Torch Red Member
Joined: Sep 1999
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From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
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Originally Posted by ittlfly
It may very well be the bat. However, I just went through this when I pulled the fuse on my courtsey lights to do some interior cleaning and forgot to replace it. Anyway, The CCM sensed the defaulted circuit and gave me the SYS. Any circuit that the CCM senses and finds a problem will give the code. Check your Helms for those circuits if your bat. checks out OK.
I had a blown fuse and was getting the SYS, but the battery was very weak at that point and actually died a couple weeks later.
Instructor
Joined: Jan 2005
Posts: 150
Likes: 1
From: denver colorado
Originally Posted by Mr Mojo
I'm betting on the battery.
My 96 LT1 (with aftermarket Sony HU) shows this code when I don't start it for a week or two. After 5-10 minutes of running, SYS goes off.
Team Owner
Joined: Aug 2000
Posts: 40,156
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From: San Pedro CA
here is my suggestion... invest in the helm manual for your car, www.helminc.com, and follow the troubleshooting guide.
I don't know if the 1992 CCM codes are the same as 1996... they might be, they might not be, I honestly don't know.
I don't know if the 1992 CCM codes are the same as 1996... they might be, they might not be, I honestly don't know.
Thread Starter
Intermediate
Joined: Mar 2001
Posts: 28
Likes: 0
From: Vero Beach, Florida
Say.....umm....oh .. aren't the guages supposed to light up a little
in the dark before you actually turn the headlamps on ? Maybe that ambient light sensor is bad ? I guess I better get a book !
Thank you everyone for your help
in the dark before you actually turn the headlamps on ? Maybe that ambient light sensor is bad ? I guess I better get a book !
Thank you everyone for your help
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Originally Posted by POLO96
Ahhh.....hah,,,SYS stops in bright sunlight and comes back when I cover the ambient light sensor !
I bet it has something to do with the aftermarket stereo install. The DIMMER circuit needs to have a resistor put in there to get rid of the flashing SYS, and since you say it comes and goes with the light, sounds like dimmer circuit....
I saved this years ago:
If "SYS" is displayed in the LCD section of the instrument panel cluster after the customer installs a new stereo, he will need to do the following:
1. Buy (2) 1 kilo-ohm 1/2 Watt resistors. [Radio Shack part # 271-023. They sell them as a 2-pack for 29 cents.]
2. Disconnect the negative battery cable.
3. Remove the receiver.
4. Connect one end of both resistors to ignition power. (Yellow wire in the car.)
5. Connect the other end of one resistor to the purple/white wire in the car.
6. Connect the other end of the second resistor to the grey/black wire in the car.
7. Cover all connections and completely cover the resistors.
8. Reconnect the negative battery cable.
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Originally Posted by Marcho Polo
I bet it has something to do with the aftermarket stereo install. The DIMMER circuit needs to have a resistor put in there to get rid of the flashing SYS, and since you say it comes and goes with the light, sounds like dimmer circuit....
I saved this years ago:
If "SYS" is displayed in the LCD section of the instrument panel cluster after the customer installs a new stereo, he will need to do the following:
1. Buy (2) 1 kilo-ohm 1/2 Watt resistors. [Radio Shack part # 271-023. They sell them as a 2-pack for 29 cents.]
2. Disconnect the negative battery cable.
3. Remove the receiver.
4. Connect one end of both resistors to ignition power. (Yellow wire in the car.)
5. Connect the other end of one resistor to the purple/white wire in the car.
6. Connect the other end of the second resistor to the grey/black wire in the car.
7. Cover all connections and completely cover the resistors.
8. Reconnect the negative battery cable.
I saved this years ago:
If "SYS" is displayed in the LCD section of the instrument panel cluster after the customer installs a new stereo, he will need to do the following:
1. Buy (2) 1 kilo-ohm 1/2 Watt resistors. [Radio Shack part # 271-023. They sell them as a 2-pack for 29 cents.]
2. Disconnect the negative battery cable.
3. Remove the receiver.
4. Connect one end of both resistors to ignition power. (Yellow wire in the car.)
5. Connect the other end of one resistor to the purple/white wire in the car.
6. Connect the other end of the second resistor to the grey/black wire in the car.
7. Cover all connections and completely cover the resistors.
8. Reconnect the negative battery cable.
But
Craig, how ya been?
hope to see you at a cruisin soon
Jack