Radio stays on!!!
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Joined: Sep 2006
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From: Overland Park KS... Car: Stock 95 Coupe
Radio stays on!!!
Hey there!
I am new to the forum (first post)and come from the Mustang world. I had many many 5.0 Mustangs over the years and finally stepped up to a real car
My question is what switch keeps the radio on after I shut off the car. If I open the door, the radio still stays on. If I close the door the lights go off but the radio still stays on.
What can cause this?
Edit Oh yeah sorry about the year.
Its a 1995 coupe.
I am new to the forum (first post)and come from the Mustang world. I had many many 5.0 Mustangs over the years and finally stepped up to a real car
My question is what switch keeps the radio on after I shut off the car. If I open the door, the radio still stays on. If I close the door the lights go off but the radio still stays on.
What can cause this?
Edit Oh yeah sorry about the year.
Its a 1995 coupe.
Last edited by tm2k; Sep 25, 2006 at 11:14 PM.
Instructor
Joined: Jun 2006
Posts: 194
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From: Hartselle Al
When this happed to me it was the door jam switch. It could be that for you or the relay. The easiest to check is the door jam switches. Do you interior lights stay off when you open the door? If so your switch may be stuck. Pull it out to the closed position and you lights should come on and the radio should go off. If this is not the case we can talk about the relay.
Door switches are cheep, but required the removal of the door panel for me to get the new one in.
The relay will be a bit more time consuming to test. I would use a volt/ohm meter, but some people skip that step and just replace the relay if the door switches are good.
Door switches are cheep, but required the removal of the door panel for me to get the new one in.
The relay will be a bit more time consuming to test. I would use a volt/ohm meter, but some people skip that step and just replace the relay if the door switches are good.
Last edited by Jack_leg; Sep 25, 2006 at 11:22 PM.
Le Mans Master
Joined: Jan 2006
Posts: 5,621
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From: Orlando FL
Jack_leg is right on target.
Just some additional info, the circuit that keeps the radio on is called the delayed bus. This gives you power to the radio and more when the key is turned off. The delayed bus relay is controlled by the CCM (Central control module). The door switches input to the CCM so when you open the door, it turns off the relay. Also after awhile the CCM will time out and shut the relay off so the power will not stay on indefinitely.
Just some additional info, the circuit that keeps the radio on is called the delayed bus. This gives you power to the radio and more when the key is turned off. The delayed bus relay is controlled by the CCM (Central control module). The door switches input to the CCM so when you open the door, it turns off the relay. Also after awhile the CCM will time out and shut the relay off so the power will not stay on indefinitely.
Intermediate
Joined: Nov 2005
Posts: 28
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From: South Carolina
I dont know if you have a stock radio but I know I had a truck one time that the radio that stayed on all the time so I finally took the radio out and found out that the guy that owned it before me wired the radio up wrong and threw a power wire to it all the time but the chance of this is slim.
Le Mans Master
Joined: Jan 2006
Posts: 5,621
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From: Orlando FL
Under the drivers side, left of the steering column there are 3 relays in a row (above left knee). The Helms book shows it’s the one in the middle. But according to my personal notes, I have marked the middle one the starter enable relay and the one closest to the steering column the delayed bus relay. This is a correction I have made in my book 1 ½ years ago so some memory details are weak at this point.
Remove the one on the end and see if the radio goes off. If you pull the wrong one, the engine wont turn over, just put it back in, it’s the other. But that is the right area.
When you turn your key off with the door shut, you should be able to control your windows. When you open the door, you should loose power to the windows as well as the radio and antenna.
Keep in mind relays generally do not stay closed, they usually don’t make contact when un-energized. That is not the normal failure mode. There is a possibility the CCM could be keeping it held in and energized. Also looks like the ignition switch could play a roll in your problem
Remove the one on the end and see if the radio goes off. If you pull the wrong one, the engine wont turn over, just put it back in, it’s the other. But that is the right area.
When you turn your key off with the door shut, you should be able to control your windows. When you open the door, you should loose power to the windows as well as the radio and antenna.
Keep in mind relays generally do not stay closed, they usually don’t make contact when un-energized. That is not the normal failure mode. There is a possibility the CCM could be keeping it held in and energized. Also looks like the ignition switch could play a roll in your problem
Last edited by pcolt94; Sep 27, 2006 at 01:41 PM.
