High current draw from Theft system.
Thread Starter
2nd Gear
Joined: Dec 2006
Posts: 2
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High current draw from Theft system.
My 89 has had a fault were the battery runs flat after 1 to 2 weeks of not being used. I checked the current draw at the battery with courtesy lights of, it is 1.3 amps. With the theft fuse removed this drops to .2 amp and the battery maintains its charge. I understand the theft system is supposed to reduce the current drawn after a few mins of being set, this does not appear to be happening. If this is correct what controls this and what component is likley to be at fault? Cheers Dave NZ.
Team Owner
Joined: Mar 2001
Posts: 54,124
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From: Cincinnati, Oh USA
First, GM says the leakage current should not exceed 50 milliamps (.05 amps). My 87 draws 27 ma.
.2 amp is WAYYYYY too much leakage current and I recommend you find out where this much leakage current is going and fix that circuit.
The theft deterrent circuit is completely in the theft controller and you can unplug this module. When you do, you will no longer have any door ajar or hatch ajar warnings.
.2 amp is WAYYYYY too much leakage current and I recommend you find out where this much leakage current is going and fix that circuit.
The theft deterrent circuit is completely in the theft controller and you can unplug this module. When you do, you will no longer have any door ajar or hatch ajar warnings.
Thread Starter
2nd Gear
Joined: Dec 2006
Posts: 2
Likes: 0
The remaining .2 amp draw comes from the instuments, presumabley clock and radio, maybe i got my . in the wrong place. But this is not affecting the battery, it is the theft deterent circuit which draws .13 constantly and is flattening the battery after a week, I understand the alarm is supposed to do something after 3 to 7 mins to reduce this draw. Is this totally controlled bt the theft detterent module under the right side of the dash or does the ecm play some part??
