Why would it keep just blowing the ECU fuse and is there one is there one particular thing that i can check that could be causing the problem other than a wire? an

IG /ECU fuse blows.
IS FUSE IN THE CAB OR ENGINE BAY?
JUST ONE FUSE? NO AMPS TOLD TO HELP ME,
no ENGINE told (4.0L v6 or 4.7 v8



the service manual on pages for PCM schematics clearly shows all things on that fuse to cause it to blow (i must assume correct fuse is there)

i am reading it to you now.

THE USERS MANUAL IS HERE (LOST?)
493 PAGE IS FUSES./
PAGE 494 SHOWS IT AS

. ECU IG 5A:
Anti?lock brake system,
vehicle stability control system
,multi-plex communication system ,
tire pres-sure warning system



USERS GUIDE
https://assets.sia.toyota.com/publications/en/om-s/OM34458U/pdf/OM34458U_edited.pdf


TO FIND THE SHORTED MODULE IF NOT WIRES SHORTED
PULL TPMS MODULE (TIRE PRESSURE)
THEN PULL , ABS CONTROLLER NEXT
AND IF STILL BLOW THE FUSE THE MUX PARTS MOST BE TRACED OUT

There are videos on youtube for test for short circuits . You coud disconnect ECU connectors to see if it still blows the fuse ,if it does ECU shorted inside . If it does you have a wiring problem .

If fuse keep blowing up, there is a short on the wiring for that particular fuse.
Check the cover on that fuse box and it will normally tell you what number that particular fuse location.
Check your manual of your vehicle and it will tell you what device/comporent is connected to that fuse. Once you figure out what device/component is connected to that fuse then you can start your diagnosis on that particular device/component.

For example, there is one particular fix I've done which the fuse keeps blowing.
I've checked the location of the fuse and check the users manual for that particular fuse and it indicates a cigarette lighter. I've check the cigarette lighter and there was a coin stuck inside the hole which causes the new fuse to blow. Once the coin was removed, the fuse did not blow anymore.

Either a shorted wire or the ECU. Sensors run from the ECU, they won't blow the fuse.

Thats the fuse for the ECU, engine control module, and is a 15amp for gas 2.0. i would locate the ECU which is under the center of the plenum in the engine compartment and disconnect the long plug. Check for green discoloration on the multipin connector. Sometimes moisture will get in there and short some of the pins together. Leave ECU unplugged and replace the fuse. If it still blows cause is between the fuse and the ECU.

ok first there could be a direct short in the ecu causing the fuse to blow OR the alternator/starter solenoid could be shorting out and blowing the fuse unhook the alternator and see if it blows the fuse then repeat with the starter and the ecu and let me know what happens

The ECM1 fuse blowing usually indicates that the fuel pump wires shorted inside the tank. If you drop the tank and remove the module, you will probably find the insulation burned off the gray pump wire.

ECU= Electronic Control unit. This is what controls all the engine electronics. All the sensors on the engine and other things are routed through the part. What it does is tells the engine how to run. Each sensor plays a specific role. The ECU reads how much are the engine is getting, tells the engine how much gas it needs, etc. Try digging around a salvage and finding a new ECU. Swap it out, and if it is still blowing the ECU fuse then you need to start looking for shorts.

could be the alternator its cause a overcharger and blower the ecu fuse protection sistem because the regulator is in the ecu

Your fuel pump is internally binding and causing the fuse to blow. Change the pump (and filter while you're back there.)