BANNED by Kris
Join Date: Oct 2011
Location: Pasadena, CA
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I can't for the life of me find my wiring diagram for the PCM wiring. My best guess is that instead of doing the clutch bypass correctly the PO buggered up the power distribution box under the hood. Something like the key switch to a relay (probably added to the system) to all the relays on the PDB under the hood. If the relay was not set up correctly (latching relay or self grounding probably) it will have a key on / positive hold. Meaning that once you apply power to the relay the relay self grounds to the chassis and it has it's own positive power source (through a gate inside of the relay to use the bridged power to the PDB to hold it closed) to keep the relay holding on. Stalling the truck would shut off the motor but since the relay is holding in the "on" position this is the source of the electrical leech. The PDB is still live after turning the truck engine "off" and the PCM, IDM, and the internal cab circuitry is still active (like the gauge cluster and such).
Here is the Ignition Switch schematic:
EDIT: PCM pinouts:
-'97 Mini Monster
-Bean's: 160/100 (FF Injectors), 2/ 6-POS chips (TW & Beans tunes), Overboost controller, E-Fuel
-BANKs: downpipe, full exhaust, gauges, intercooler
-Irate: T-4 kit, IC pipes, 3" Irate Plenums, BASB Turbo
-Stage II trans.
-Mag-Hytec trans. and pumpkin covers
-6637, CCV, IDM, 6.0 Fan, 49-Federal PCM swap, MAP line Mod
-370 Amp alt., 40k trans cooler, ADRENALINE PUMP
-twin on-board air w/ 10 gal. tank
-'15 F350 6.7L DRW 4x4
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