Good Evening, I am recently the new owner of a 2006 Honda accord 2.4L VP and it has a parasitic draw that I narrowed down to fuses (27) and (7) under the dash. The draw is not present when both fuses are removed but is when either one is plugged in. The draw is approximately 140m amps but also drops to 20m amps for approximately 5 seconds and then goes back up to 140 for 30 seconds roughly. I looked at a schematic and saw they went to the master door lock switch or door multiplex module. The window would intermittently roll back up while I was trying to put it down. Unplugged switch and draw went down to 6m amps. Replaced with a new switch.140m amp Draw was still present. It appears the window switch doesn’t retain the auto function after programming multiple times.

Plugged just the power wires and ground wire into the master switch and draw was still present. Connected a light bulb to both fused power wires(one at an time) and ground and bulb lit bright each time so I know the wires are good. I also unplugged all the door lock actuators and window motors to see if that would make a difference but nothing changed. Could it be the MICU or did I get a bad switch out of the box or am I missing something? I do not have a scan that can communicate with the B can. Any relevant information would be appreciated.

Thank You,

Tip13 2006 US Honda Accord 2.4L VP A/T

 

I have a US accord shop manual, where the power distribution has some other items listed for fuse 7.

Fuse 7 lists combination switch control unit, door multiplex control unit, gauge control module, immobilizer control unit-receiver, navigation display unit, and navigation unit. It also powers the MICU internally. Does your car have a navigation unit? I'm not sure if it powers the stereo if you don't have a navigation unit.

You can try pulling fuse 7 and see what items don't work to verify on your UK? accord.

Try unplugging those items to see if the draw goes away. It is strange the #27 fuse needs pulled as well to get the draw to go away. I'll guess some other component is keeping the MICU awake if fuse 7 powers the other items on a non-US accord. It could be the MICU as well. I'd also install the original door switch to retain your auto features.

I've seen where people use thermal imaging to find a component that remains on causing a draw. If the car interior is cold, you may be able to feel a warm component with your hand if unplugging those items doesn't eliminate the draw.

 

I do not have navigation. I will try unplugging the gauge cluster and the immobilizer as those also get power from fuse 7. Thank You!