Rep Power: 0

I have continuous 185 mA drain in the "backup" circuit. The drain starts at about 225 mA then after about 20 seconds it drops to steady 184-185 mA. When I pull the under-dash radio fuse the current drops to about 181 mA. when I pull the 10A fuse from circuit 9 in the under hood fuse box the drain drops to less than 1 mA. There are a lot of things on this circuit. How can I figure out which is causing the battery killing drain?

 
Rep Power: 244

Any aftermarket stuff on the car, like a remote start or headunit?

Any work previously done?

I would start unhooking things from that circuit untill the draw went away.

 
Rep Power: 0

How, where does one go about unhooking the following items which are on the circuit?

1. Audio Unit.
2. Data Link Connector.
3. Gauge Assembly.
4. Immobilizer Control Unit/Receiver.
5. Immobilizer Indicator Light.
6. Keyless Receiver Unit.
7. Multiplex Control Unit.
8. Security Control Unit.
9. Audio Unit

 
Rep Power: 244

Never said it would be easy.

I would start with the Audio and then go, keyless receiver, multiplex and gauge assembly.

I would also buy one of these:

 
Rep Power: 0

Hi, I have a 2003 Acura EL 1.7 and fuse #9 labeled (Backup) is giving me the same issue you described on your original post. Did you ever resolve the issue?
Thanks

 
Rep Power: 102

that circuit is often tapped for an aftermarket backup camera. if one was ever installed by you(or installed and possibly removed by a previous owner), i'd start there.

i'm assuming backup as in reverse lights

 
Rep Power: 308

Backup is for items that require constant power. Clock, radio memory etc.....

 
Rep Power: 0

My #9 shows -0.48 with fuse in.. -0.08 with fuse out...instrument cluster,radio and cig lighter removed same results.