battery drain
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Junior User
Joined: May 2003
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From: AZ
battery drain
ok,i have a 96 explorer sport with all 99 drive train and electronics,the only thing that is 96 is the body and frame,everything else is 99,the truck is a 4.0 sohc,5spd auto,4x4.it runs and drives fine but the battery dies after a few days if you dont drive it.the donor 99 was a 4 door.i know there are some extra wires for the rear doors/windows,with those not hooked up will that drain the battery?im trying to find the interior harness and ecu for a 99 sport.i was also told the the GEM might be going bad,what is the GEM?what does it do?
Logistics Pro
Joined: Jun 2009
Posts: 4,819
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From: Cedar Rapids, IA
The GEM is the Generic Electronic Module. It controls many different functions - various chimes, relays for power locks, etc.
Do you have a multimeter with a current meter setting? If so, my suggestion would be to turn off the large accessories (so you don't blow the fuse in your meter) then install the current meter in series with the battery positive cable. After the vehicle's been sitting for an hour, start pulling fuses and watch for the current draw on the meter to drop. After sitting an hour with the key off and doors closed, the draw on the battery should be less than or equal to 70 mAdc (0.07 Adc). When you find a fuse that, when removed, causes the draw to drop below this, you've identified the circuit that has the current draw. You'll then need to understand the power distribution (wiring diagram) for your '96 Sport to determine where the likely culprit is in that circuit.
Unless you've somehow shorted out some wires that would have been uses for the rear door locks, they will NOT be the source of the current draw.
-Rod
Do you have a multimeter with a current meter setting? If so, my suggestion would be to turn off the large accessories (so you don't blow the fuse in your meter) then install the current meter in series with the battery positive cable. After the vehicle's been sitting for an hour, start pulling fuses and watch for the current draw on the meter to drop. After sitting an hour with the key off and doors closed, the draw on the battery should be less than or equal to 70 mAdc (0.07 Adc). When you find a fuse that, when removed, causes the draw to drop below this, you've identified the circuit that has the current draw. You'll then need to understand the power distribution (wiring diagram) for your '96 Sport to determine where the likely culprit is in that circuit.
Unless you've somehow shorted out some wires that would have been uses for the rear door locks, they will NOT be the source of the current draw.
-Rod
Thread Starter
|
Junior User
Joined: May 2003
Posts: 90
Likes: 0
From: AZ
The GEM is the Generic Electronic Module. It controls many different functions - various chimes, relays for power locks, etc.
Do you have a multimeter with a current meter setting? If so, my suggestion would be to turn off the large accessories (so you don't blow the fuse in your meter) then install the current meter in series with the battery positive cable. After the vehicle's been sitting for an hour, start pulling fuses and watch for the current draw on the meter to drop. After sitting an hour with the key off and doors closed, the draw on the battery should be less than or equal to 70 mAdc (0.07 Adc). When you find a fuse that, when removed, causes the draw to drop below this, you've identified the circuit that has the current draw. You'll then need to understand the power distribution (wiring diagram) for your '96 Sport to determine where the likely culprit is in that circuit.
Unless you've somehow shorted out some wires that would have been uses for the rear door locks, they will NOT be the source of the current draw.
-Rod
Do you have a multimeter with a current meter setting? If so, my suggestion would be to turn off the large accessories (so you don't blow the fuse in your meter) then install the current meter in series with the battery positive cable. After the vehicle's been sitting for an hour, start pulling fuses and watch for the current draw on the meter to drop. After sitting an hour with the key off and doors closed, the draw on the battery should be less than or equal to 70 mAdc (0.07 Adc). When you find a fuse that, when removed, causes the draw to drop below this, you've identified the circuit that has the current draw. You'll then need to understand the power distribution (wiring diagram) for your '96 Sport to determine where the likely culprit is in that circuit.
Unless you've somehow shorted out some wires that would have been uses for the rear door locks, they will NOT be the source of the current draw.
-Rod
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