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82 ecm

Old Jun 2, 2011 | 09:05 AM
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From: Alvin Texas
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Does this ECM have a sleep mode where it draws no current or is it always awake? If so what should the draw be?
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Old Jun 2, 2011 | 10:04 AM
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Originally Posted by bpassmore
Does this ECM have a sleep mode where it draws no current or is it always awake? If so what should the draw be?
Good question. With the key off I don't think it should be drawing anything. On the other hand it does have a built in memory for codes. Logic suggests it may draw a bit. In thinking about it I don't know.

why do you ask?

Jim
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Old Jun 2, 2011 | 11:50 AM
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If your battery is draining, it isn't because of the ECM. More likely due to a bad interior lamp dimmer device. Your drain would have to be pretty significant for it to waste a big battery...unless the battery is almost 'toast'.
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Old Jun 2, 2011 | 07:27 PM
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With all accessory, lights and alternator disconnected, there is a draw which will drain the battery to a no start condition. There is no draw until I connect the computer fuse in the batt compartment, then approximately 2.3 A. If the fuse is in the ECM stays warm to touch.
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Old Jun 2, 2011 | 10:45 PM
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You may just have an ECM with an internal short. The ECM shouldn't draw more than 100 ma when at idle, if working properly. Quite unusual...
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Old Jun 3, 2011 | 07:58 AM
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Thanks everyone. Replacing it is where I was heading, just looking for sound second opinions.
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