"Backup" Fuse Parasitic Drain/Wiring diagram
 

Hey guys,
I've been having a drain issue for quite a while on my 2009 Accord Coupe EXL. It's the infamous "backup" number 15 fuse in the under hood fuse/relay box on a variety of Honda's. Pop the fuse out, drain goes away. Of all the forums and posts online, they don't have anything in common and all seem to be random fixes or causes.
I've tested all of the drivers side fuses for voltage draw and none connect to this drain and now I'm stumped. I'm wondering if anyone knows what is connected to this fuse aside from the radio, or have a wiring diagram of some sort for this "backup" fuse.

Thanks!

Can you post a picture of the fuse box with the fuse showing the parasitic draw? Can you point out the fuse with the draw?

You'll probably have to unplug each component downstream of the problem fuse to narrow down the problem. Want to make sure I list the correct components for you.

Have you checked the passenger side fuses for the draw?

Here are the pics of the fuse box. I have not checked the passengers fuses yet.

Under-hood Fuse No. 15 protects the following components or circuits:

Audio Unit, Audio-HVAC Sub Display Unit, DLC, Driver’s Door Courtesy Light(4-door), Driver’s MICU, Front Passenger’s Door Courtesy Light (4-door), Fuse 5 inPassenger’s Under-dash Fuse/Relay Box, Gauge Control Module, HandsFreeLinkControl Unit (Navigation), Immobilizer-Keyless Control Unit, Microphone(Navigation), Navigation Display Unit (Navigation), Navigation Unit (Navigation),Passenger’s MICU, Power Window Master Switch

See my post #7 in this other thread regarding parasitic draw on Hondas after 2003: https://www.hondaaccordforum.com/for...y-drain-57492/

The following systems are related to the B-CAN network:

•Entry Light Control System
•Exterior Lights
•Gauges and Indicators
•Horns
•Immobilizer System
•Interior Lights
•Interlock System
•Moonroof
•Power Door Locks/Keyless Entry/Security System
•PowerWindows
•Reminder Systems
•Safety Indicator
•Wiper/Washer