Greg_Canada

Ok guys (and girls) i've been having an amp draw problem in my 99' 4runner, it pulls .08 amps when it's off. i have found out that when the power antenna is not fully retracted, that it pulls .02 amps.
This has narrowed me down to .06 amps. I have found the culprit, being the MPX-b fuse, or the MPX Multiplex Communication System. I don't know what this is. I've searched but havent came up with much. Can anyone shed some insight? When i pull this fuse my amps drop to .01-.02 (which is what it should be). Does anyone know what my problem is?

Greg

Yukon

When my MPX-b blew it took out my power rear window, remote everything, and power locks.

Mtn Mike

iTrader: (1)

I'm having the same problem with parasitic draw. Help

My total draw is 135 mA. Possibly two bad circuits. :

1) Dome/radio/clock circuit is drawing 80mA; The main problem appears to be the radio because when I unplug the radio the circuit only draws about 5 mA (which I assume is clock memory)

2) MPX-b circuit is perplexing: the circuit seems to draw 35mA, which sounds too high..is it?

edit: with both tthe MPX-b and Dome fuses pulled, the system draws 8-10 mA

slacker

iTrader: (1)

...... just a guess .. and I have no Idea ...
wireless Internet has had some issues here .

Greg_Canada

Well, my starter was on it's way out, i replaced it, and now the battery doesnt die anymore. Who woulda' thunk it.