There is a constant drain on the battery, about.

Tiny
WA5VJY
  • 1998 CHEVROLET CAVALIER
  • 72,500 MILES

There is a constant drain on the battery, about 300 ma. Now after the car sets for a week without beimg started the battery is dead. The clock in the radio is on all the time and I don't remember that being on after the ignition was turned off.
I can remove the "INT LAMP" fuse and I hear a relay in or on the multifunction module open and the clock goes out, if I remove the radio fuse it has no effect on the clock. Is the module bad or am I looking in the wrong area?

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Thursday, November 8th, 2012 AT 10:03 PM

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Tiny
CJ MEDEVAC
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SEE IF THIS HELPS YOU

http://www.2carpros.com/questions/1989-ford-tempo-98-tempo-bran-new-battery-shut-car-off-didn-t-days-now

RETURN WITH GOOD NEWS

THE MEDIC

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Friday, November 9th, 2012 AT 2:34 AM
Tiny
WA5VJY
  • MEMBER

I have already done everything sugested in the youtube film clips. I am down to one fuse now and that one is the "interior lamp" 10 amp fuse. There is a module under the dash up high on the right hand side, some refer to it as the alarm module and others call it a multifunction module.
There is a relay in or on that module that I can hear and feel open and close when I remove and replace the fuse. I think the relay should open when the ignition switch is in the OFF position and the clock display should be off and the current draw should go down to 50 ma or less and it doesn't. What is keeping the relay energized and the clock display on with the ignition off.
Is the module the problem or is it something external to the module? Where is the voltage comming from that keeps the relay energized?

Thanks in advance for your help.

John

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Friday, November 9th, 2012 AT 3:16 PM
Tiny
WA5VJY
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I would contribute more but I don't see a place to do that now.
Thanks
John

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Friday, November 9th, 2012 AT 3:25 PM
Tiny
CJ MEDEVAC
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MAYBE THE RELAY IS STUCK?

THUMP THAT PUPPY!!!

SWAP IT WITH AN EXACT TWIN----JUST FOR A TEST--REPLACE IT SHOULD THE SWAP FIX YOU

I'VE BEEN HERE SINCE 'O9---THIS IS THE 2ND TIME THEY HAVE "REVAMPED/REMODELED" (OCT 17)---I'M HAVING A HARD TIME FIGGERING HOW TO GET AROUND IN HERE (ONCE AGAIN) MYSELF!!!!

I DO BEST IN THIS (CJ 7) AND THE CJ 5 FORUMS......THEY SELDOM BREAK....SO I TEND TO WONDER TO THE OTHER FORUMS!......SEE ME IN ACTION ON THEM "MEGA POSTS" (SOME OVER 100 RESPONSES).....IF YOU HAD A CJ, WE'D BE FIXED BY NOW!

http://www.2carpros.com/makes/jeep

AFTER YOU RESPOND AGAIN---I'LL GO LOOK FOR ANOTHER FELLER WHO MIGHT BE MORE UP ON YOUR SITUATION--AND GET HIM ON BOARD

THE MEDIC

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Friday, November 9th, 2012 AT 3:53 PM
Tiny
CJ MEDEVAC
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"WANDER"---NOT "WONDER"!

THE MEDIC

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Friday, November 9th, 2012 AT 3:54 PM
Tiny
WA5VJY
  • MEMBER

OK, see if anyone else is able to read my previous post and come up with anything.

I would swap the module out if I had one, but I don't.I can hear the relay click so it isn't stuck.

I will have to remove the whole dashboard to get to the module, fun, fun, fun.

Thanks
John

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Friday, November 9th, 2012 AT 5:58 PM
Tiny
CJ MEDEVAC
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EVER TOOK RELAYS APART?

(ON SOME RELAY DESIGNS I'VE SEEN, THE ELECTROMAGNET YANKS ON THE MECHANICAL STUFF AND MAKES A CLICKTHE ACTUAL CONTACTS COULD STILL BE SORTA WELDED TOGETHER. IT'S NOT NECESSARILY THE CONTACTS "SLAPPING TOGETHER", THAT MAKES THE SOUND!

I WILL GO LEAVE MESSAGES WITH 2 OTHERS TO LOOK AT THIS----BE PATIENT!

THE MEDIC

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Saturday, November 10th, 2012 AT 1:28 AM
Tiny
WA5VJY
  • MEMBER

Thanks, I'll be patient.

John

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Saturday, November 10th, 2012 AT 4:18 AM
Tiny
CJ MEDEVAC
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MISSION ACCOMPLISHED W/ MESSAGES IN THEIR MAILBOXES---LET'S SEE IF THEY SHOW NOW!

THIS KINDA STUFF HAS BEEN STUCK IN MY HEAD SINCE MAYBE 2-3 YEARS AFTER 1963.I HAVEN'T SHOOK IT YET!

THE MEDIC

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Saturday, November 10th, 2012 AT 4:51 AM
Tiny
KHLOW2008
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Sorry for the delay in joining in. Was away for a few days.

The problem is related to the multifunction alarm module and this module runs on constant power all the time so it is highly likely that it is faulty internally. You would have to take the module out to check/test/repair or replace.

From the symptoms, I believe a capacitor inside the module is bad causing the relay to be constantly turned on.

The control unit is in the convenience center and instructions does not indicate that dash removal is required.

Are warning chimes etc all working correctly?

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Monday, November 12th, 2012 AT 12:27 PM
Tiny
WA5VJY
  • MEMBER

Thanks for your reply, what you said makes sense to me.
I am a retired electronic technician and will look into the guts of the module but without a schematic it will be difficult.
All the lights, chimes etc are working as they should, only the relay is energized all the time.

The location of the unit is such that I can see it but can't reach it because it is bolted to a frame up high between the fender wall and the glove compartment. I have a factory manual but I haven't seen anything that tells me how to remove it. I suppose I'll have to get it out before I can get the part number to get the proper module? Thanks for your reply I appreciate that.

Later
John

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Monday, November 12th, 2012 AT 4:21 PM
Tiny
KHLOW2008
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These are the procedures we have in our database.

REMOVAL & INSTALLATION

MULTIFUNCTION ALARM MODULE (MAM)

Removal & Installation

Disconnect negative battery cable. Remove convenience center insulator. Disconnect
MAM electrical connectors. Remove MAM nuts. Remove MAM assembly. To install,
reverse removal procedure. Tighten MAM nuts to 53 INCH lbs. (6 N.M).

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Monday, November 12th, 2012 AT 6:54 PM
Tiny
WA5VJY
  • MEMBER

Remove convenience center insulator?
I am not familuar with this part, is this part of the dash?

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Monday, November 12th, 2012 AT 7:24 PM
Tiny
WA5VJY
  • MEMBER

I finally got the module out. I took it apart and gave it a visual inspection, there didn't appear to be any bad componants. That small black relay in the module is the one that is turned on all the time. I found a used module on line and ordered it. I'll swap out the modules when I get it.
The chances of having the same problem with a different module are slim so if the problem stays I'll let you know, either way.

Thanks much for the help.
John

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Tuesday, November 13th, 2012 AT 4:40 AM
Tiny
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You're welcome.
Good luck.

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Tuesday, November 13th, 2012 AT 1:34 PM
Tiny
SATURNTECH9
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Sorry I missed the party just saw the message from the medic please let us know what happens with the swap since you already purchased the part. If that doesnt fix the draw please let us know. ALso when pulling that fuse what does the draw drop too?

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Tuesday, November 13th, 2012 AT 6:43 PM
Tiny
CJ MEDEVAC
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THANKS, BOTH OF Y'ALL FOR SHOWING UP!

I'M SURE I'LL NEED THE CALVARY AGAIN. MAYBE NOT SOON

FEEL FREE TO ADD TO ANY OF MY POSTS---THE MORE INFO/ OPTIONS SOMEONE GETS, THE BETTER!

THE MEDIC

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Wednesday, November 14th, 2012 AT 1:23 AM
Tiny
WA5VJY
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Thanks to all who helped with this Cavalier problem.
I'am not out of the woods yet but we can see what happens when the replacement module is installed. I'll be out of town for two weeks, when I get back the part should be here and I'll let you know if I did any good.

The current draw drops to about 50ma when the fuse is pulled. I sure would like to know what else besides the clock display is turned on in that ciucuit. I can't see or hear anything?

Thanks again
John

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Thursday, November 15th, 2012 AT 2:15 AM
Tiny
KHLOW2008
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Here is a schematics of the MAM and the componets it is linked to.

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Thursday, November 15th, 2012 AT 6:34 PM
Tiny
WA5VJY
  • MEMBER

Thanks for the wiring diagram. I see the fuse I have been removing goes right to the battery input of the chip (pin D), so if there is a short in the chip who knows what is powered up. I still don't know where the clock display in the radio fits in the big picture. Or why is it on all the time now as long as the fuse is in the socket, it should only be on when the ignition is on?

Thanks again
John

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Friday, November 16th, 2012 AT 5:11 AM

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