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Blown EFI fuse,no spark - 2005 Toyota Camry XLE

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Posted on Jan 02, 2017

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SOURCE: unsure if promblem is fixed. Blowing efi fuse.

The most common reason for the EFI fuse to blow is the wiring is rubbed through somewhere in the engine wiring harness, this fuse supplies power to many EFI parts on the engine, always look for shorts where the most movement is, the engine is that place, most likely the next time you go down a really rough road the short may occure again, carry a few fuses just to be safe.

Posted on Sep 15, 2008

  • 1861 Answers

SOURCE: Alternator overvoltaged, car won't start no spark.

Look in the fuse box under the dash for more blown fuse, advise of which ones are blown.

Posted on Dec 08, 2008

mrmx2333
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SOURCE: 1990 toyota pickup wont start/turns over no spark or fuel

there may be a bad contact problem check the wire running into the fuse box and look at the relay for the efi

Posted on Dec 19, 2008

  • 229 Answers

SOURCE: efi fuse blown after engine start

I think gas is not getting to your fuel rail.

Could be the fuel pump. To access it you will have to remove you rear seat and take off an oval shaped plate. There you can remove it and replace the pump.

Posted on May 24, 2010

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1 Answer

How do i seat the oops timing to the spark plugs


hello Stu
no engine options stated, there are 4 engines. we cant guess that.
all 4 spark plugs dead, ?????????????????????????????????????
we next use a scan tool,
plug it in, get comms.
then crank for 5 seconds,
release key.
then see why there is no spark (ecu cuts fuel if spark is missing)
use any scan tool.
Generic for all EFI cars made.
if all you want to do is guess. then nobody can help. you.
here is a short list
1: bad fuse (looks good but is not) 0v on one side. key on.
2: bad connections in the EFI system (spark related)
3: bad ECU, (nah) (I repair them)
4;bad coil
5: bad ignitor to coil.
6: bad CMP (cam sensor)
7; bad CKP sensor (if separate from CMP) depends on engine used.
8: bad wiring to any of above. bad connectors to any of above.


learn to use a scan tool and win over 90% of the time,
working spark or injector or A/T transmissions.
on 2006 and newer cars, even more true.
on newer cars the scanner can even tell you the fuse is blown
even though the mech thinks its good.
some fuse have hair line cracks, that cant be seen.

the Scan tool does report bad sensors, if you just look.
at all times !!!

Apr 10, 2015 | 2006 Suzuki Forenza

1 Answer

I have a suzuki xl7 tht wont start and says service traction control service stability control dont know if it is the pass key 3 or just an ecm problem


no year stated. that is challenging
2 problems.
if it dont start , traction dont matter now so, will the engine crank over fast? if yes, is the spark good? on all cylinders?
yes/no
how many miles on it?
which engine/
2.5 L (156 hp) a V6
2.7 L (185hp) V6

no starts.
Does the Check engine lamp glow key on,
Yes, good
no , fuse blown. (the PCM EFI brain must have power to run)


  1. does it crank? fast?
  2. check fuses yet. all fuses, related to EFI? and spark.
  3. Got spark at all 6? spark plugs. (tedious on C.O.P. cars)
  4. if above all ok, we try test fuel to see if you lost fueling.



Jul 06, 2014 | Cars & Trucks

1 Answer

Fuel system wiring diagram


which engine? 2.5 or 4L ,,, always engine first...... ill post for 4liter.
the first test on all EFI, (varies rules) but here it is.
many cars only have power to the pump cranking and running (ONLY)
(crash and burn rules... dig it?)
so use the meter this time and crank.
fuses first check.

btw, alldata.com has that, login and look, like us.
see schem linked here. its real simple and is online. (goggle)

this EFI pump in 1993, is 100% controlled by the ECU. at all times
Fuse 1, blown kills pump dead.
software (firm) in the ECU controls this.
http://www.fixkick.com/look/odds-ends/jeep/93wrangler-EFI-4L.jpg

if cranking , pump is dead, check coil for 12v, on fuel pump relay
if not 12v across coil, cranking the ECU is bad.
or ECU detects spark loss, again, crash and burn logic in the ECU.

the ecu monitors spark at all times. if bad it cuts fuel
even if spark is GOOD. ! and spark feed back is bad.
that is pin 44 on ECU is dead......... for any reasons.....





Dec 19, 2013 | 1993 Jeep Wrangler

1 Answer

Toyota Sienna 2002 Engine rotates, but will not start. Battery, and starter is good. Suggestions?


More information could be so many things, like bad fuel, blown efi fuse, immobilizer problem, bad fuel pump, etc.
When I have a problem like this I do two things scan computer for codes.
Crank vehicle for a fuse seconds remove a spark plug, if spark plug is wet, then I know that there is no spark, if it is dry, then I focus on fuel delivery.

Jan 10, 2011 | 2002 Toyota Sienna

1 Answer

I have a 1991 Toyota MR2 that will not start.


The EFI fuse is for fuel components, and for powering up the ecu. There is a lot on that circuitry. The 15 amp fuse, is also the power for the EFI relay. If this relay is without the power from that fuse, you probably won't have the fuel pump working, and the ecu won't be fully powered up.
Check the fuse again to see if it blew out again. If it did, you will have to trace the circuits for a short. Also, the EFI fuse gets power from the 40 amp AM2 fuse, so if the EFI fuse has power to it, the AM2 fuse is okay.
If I were you, I would test and check all fuses in all fuse/relay boxes under the hood. checking fuses is easy with a cheap test light. With the key in ON, every fuse on the car has power to it. So you clip tester light to ground (use neg. batt'y post), and then use test light probe into the little slot on the top end of a fuse. You do not have to take fuse out to visually inspect.
On the top end of all fuses are 2 little slots (one at each end of fuse) that is open to the metal strip inside. So you turn key to ON, then probe one end of the fuse. The test light should light up. Even a blown fuse will light up tester on one end of the fuse. Now to test the fuse itself, use the probe and touch into both ends of the fuse. A good fuse will light the tester on both ends of the fuse. A blown fuse will only light up one end of the fuse-the metal strip has blown so no power on both ends of the fuse, SEE?
And by using the test light, you also verify that power is getting to
the fuse. It is easy, and you are on the way to becoming an automotive electrician. Next, you need to buy and use a multi-meter, for automotive uses buy a digital volt-ohm meter (DVOM), which is what most multi-meters really are. And you don't have to buy an expensive one. I have a Sears Craftsman DVOM, about 20 years old, and it only cost like $30.

May 09, 2017 | 1991 Toyota MR2

1 Answer

FUEL NOT GETTING TO INJECTERS GOES BACK TO RETURN LINE TO TANK


Check to see if the 15 amp EFI fuse is blown.
This fuse controls the ECU and the injection.

Jan 15, 2009 | 1986 Toyota Pickup 4WD

1 Answer

Alternator overvoltaged, car won't start no spark.


Look in the fuse box under the dash for more blown fuse, advise of which ones are blown.

Dec 08, 2008 | 1991 Toyota Camry

1 Answer

1990 toyota pickup wont start/turns over no spark or fuel


there may be a bad contact problem check the wire running into the fuse box and look at the relay for the efi

Nov 25, 2008 | 1991 Toyota Pickup

1 Answer

Unsure if promblem is fixed. Blowing efi fuse.


The most common reason for the EFI fuse to blow is the wiring is rubbed through somewhere in the engine wiring harness, this fuse supplies power to many EFI parts on the engine, always look for shorts where the most movement is, the engine is that place, most likely the next time you go down a really rough road the short may occure again, carry a few fuses just to be safe.

Sep 15, 2008 | 1991 Toyota Pickup

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