I have just isolated a slow battery drain to the ACC fuse. I have 1.6 amps beeing drawn and it kills a battery after 4 or 5 days. After looking through Chiltons and Haynes, I can't find anything that comes off the fuse except the door lock switches. Does someone have a diagram of what the ACC fuse feeds? I am going to check the radio and cig lighter, but would like to get a decent schematic if it's available. Thanks in advance for the assistance.

Mike

 

Ran into this a while back in my truck. Checked other vehicles and the full time draw is about 1/4 amp for the ECM and radio, door locks etc. My problem was in the stereo, and older Pioneer Cd player. Takes forever to narrow this stuff down. I just used a #194 bulb wired in series with the battery, shunt it to charge up the circuits and then unhook the shunt, the bulb should not light when the current draw is normal. Anyway, here's a scan of the ACC feeds. After you click on the thumbnail, you can zoom in with the left mouse button one time.

 

I pulled the cigarette lighter out and still have the hig amp draw. I checked the resistance on both wires from the ligher to ground. It's a short between the wires and nearly a short between the hot wire and ground.Now I just need to isolate the shorted wire. Any ideas?

Mike

 

tom3
Thanks. That's exactly what I needed. Back to check the underwhood light. I had issues with that in past. Maybe they hooked it up when I had it painted.

Mike

 

I dropped the fuse panel, pulled the driver door panel off, removed the radio and pulled all the lights. Zero amps. Put everything back together. Still zero amps. Guess it's going to be one of those intermittent electrical problems. If it comes back, I'll countinue to isolate.

Mike