ECM replacement and location

Tiny
AIYELAGBE
  • MEMBER
  • 2011 TOYOTA COROLLA
  • 6 CYL
  • 2WD
  • AUTOMATIC
How ECM system can be replaced? Do you know where it is at?
Do you
have the same problem?
Yes
No
Sunday, May 8th, 2011 AT 8:11 PM

39 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hello,

Here is the ECM location and instructions on how to replace the unit in the diagrams below. Check out the diagrams (below). Please let us know what happens.
Was this
answer
helpful?
Yes
No
Sunday, August 9th, 2020 AT 11:41 AM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
Have a look at a used unit or rebuilt to save money.
Was this
answer
helpful?
Yes
No
+1
Sunday, August 9th, 2020 AT 11:41 AM
Tiny
DAN .O.SAIBU
  • MEMBER
  • 1 POST
  • 2010 TOYOTA COROLLA
  • 650,200 MILES
Does removal of battery from the car for repair will cause the car to require computer coding before the car can start the battery was removed when the mechanic carry out repairs on the transmission after the repair every thing was put back and the car refuse to start and the mechanic said the it must be code before it can start
Was this
answer
helpful?
Yes
No
-1
Sunday, August 9th, 2020 AT 11:49 AM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
No, it is not necessary to recode.

If equipped with smart key, after installation of the battery, you need to wait at least 10 seconds or more before attempting to start and it could be difficult to start at this time.
Was this
answer
helpful?
Yes
No
+1
Sunday, August 9th, 2020 AT 11:49 AM (Merged)
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
What happens when you try to start it? Im not sure what is meant by coding? Reprogramming? I dont think thats needed. Unless a new ecm was installed?
Was this
answer
helpful?
Yes
No
Sunday, August 9th, 2020 AT 11:49 AM (Merged)
Tiny
MAESTRO039
  • MEMBER
  • 1 POST
  • 2007 TOYOTA COROLLA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 25,000 MILES
The code comes up for the shifting pressure control solenoid and I haven been told it is either the solenoid "D" electrical or the ecu. How can I know for sure? The code cleared the first time I had it checked but would not clear the second time. The car is a reconstructed total so no warrenty. Do I have a bad ECU?
Was this
answer
helpful?
Yes
No
Sunday, August 9th, 2020 AT 11:52 AM (Merged)
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
You could have a dealer or trans shop test the solenoid with a scanner, if it energizes and de-energizes then it is the PCM, or wiring to it.
Was this
answer
helpful?
Yes
No
Sunday, August 9th, 2020 AT 11:52 AM (Merged)
Tiny
JOSEPH GILLUM
  • MEMBER
  • 1 POST
  • 2007 TOYOTA COROLLA
Transmission problem
2007 Toyota Corolla 4 cyl Two Wheel Drive Automatic

Is this a major repiar and where inside of or on the transmission is it located.
Was this
answer
helpful?
Yes
No
Sunday, August 9th, 2020 AT 11:52 AM (Merged)
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
It's actually called the PCM (Powertrain Control Module), since it also controls the transmission.

Yes it is a major repair, the new PCM must be programmed by dealer with correct VIN.

They are located in either engine compartment or under glove box depending on model.

PCM failure is, for the most part, rare on Toyotas, so I would have the PCM tested by dealer before replacement, and if your car is out of warranty, they are usually around $1000 from Toyota.
Was this
answer
helpful?
Yes
No
-1
Sunday, August 9th, 2020 AT 11:52 AM (Merged)
Tiny
JGZUAZUA
  • MEMBER
  • 1 POST
  • 2006 TOYOTA COROLLA
Computer problem
2006 Toyota Corolla 4 cyl Automatic 72000 miles

I was driving on the highway and my cruise control light started blinking and stopped working. One hour later I got off the highway to get gas cause I was on flat empty. As I approached the gas station my check engine light came on, and although my car did not die, I lost power and it would not accelerate. I was able to pull a code(PCM Processor Failure). I had to get a tow truck to tow my car home(150 miles), when we got home 6 hours later the car started and ran fine and has been running perfect ever since. We have put about 200 miles on it, but do not trust it for extended trips.
What can I do?
Was this
answer
helpful?
Yes
No
Sunday, August 9th, 2020 AT 11:52 AM (Merged)
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
Whenever you run the car out of gas (or close to out) the fuel pump can overheat. Gasoline cools the heat generated by the pump.

The PCM error would indicate a problem with the PCM or loose connection.
I would not drive it any long distance with a PCM error. I would take it to qualified machanic and have PCM scanned again for any current, history or pending codes.
Was this
answer
helpful?
Yes
No
-1
Sunday, August 9th, 2020 AT 11:52 AM (Merged)
Tiny
CLAUDIAV
  • MEMBER
  • 1 POST
  • 2006 TOYOTA COROLLA
Computer problem
2006 Toyota Corolla 4 cyl 30000 miles

The technician told me that he thinks that my computer box in my car is broken, about how much would it cost to repair or replace it?
Was this
answer
helpful?
Yes
No
Sunday, August 9th, 2020 AT 11:52 AM (Merged)
Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Hi there,

the first thing to do is make sure that the ECU is faulty as if you just replace it and a faulty wire or component is causing your problem, you may fry the new ECU and have no come back, find a tech that knows how to check the ECU out first.

Mark (mhpautos)
Was this
answer
helpful?
Yes
No
Sunday, August 9th, 2020 AT 11:52 AM (Merged)
Tiny
RDAVE63
  • MEMBER
  • 1 POST
I have a 2006 Toyota Corolla with 41,700 miles on it. I had the Engine Computer replaced today. The Toyota Dealership told me that Toyota is aware that they have been having malfunctions with the computer and the new one they installed is redesigned. They said the new redesigned computer does not malfunction and no one has returned to have them replaced. I was lucky I bought the extended warranty, because the standard warranty is 3 years or 36,000 miles. To the guy who posted at the top, it would seem your car should still be under warranty if you only have 30,000 miles on it. Also, if Toyota knows that the original computer is defective, it would seem that they should be replacing it with the newer one. I would do more research on this issue and confront them. If they don't want to replace it, then there should be some kind of grievance policy where you can complain. I would continue to pursue it though if I were you.
Was this
answer
helpful?
Yes
No
-1
Sunday, August 9th, 2020 AT 11:52 AM (Merged)
Tiny
KDDRIVE
  • MEMBER
  • 1 POST
  • 2006 TOYOTA COROLLA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 52,300 MILES
I'm being told by a mechanic that my PCM Module has gone bad and that that is a "common" problem in Toyota's. The engine will start sometimes and then will cut off and not again for hours. It has been undrivable for about a week now. I'm told that the part is going to cost me about $700 - $900 alone. Is this true or should I seek another shop?
Was this
answer
helpful?
Yes
No
-1
Sunday, August 9th, 2020 AT 11:52 AM (Merged)
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
It is certainly NOT a commom problem.

RUN to another shop.

While possible the PCM is bad, it should be covered by the Federal Emmissions Law.
Was this
answer
helpful?
Yes
No
Sunday, August 9th, 2020 AT 11:52 AM (Merged)
Tiny
CLAIRNOEL
  • MEMBER
  • 1 POST
  • 2005 TOYOTA COROLLA
Engine Mechanical problem
2005 Toyota Corolla 4 cyl Automatic 70000 miles

So I actually have a random complex, to me, question. I have a 2005 Toyota Corolla LE that had the ECU replaced due to malfunction. A year previous to that I was involved in an accident where I swore my antilock brakes didn't work because I skid 40 feet into the back of a truck. I heard someone say that the ECU also controls the ABS, is this true and could that have been a factor or is someone just pulling my chain?
Was this
answer
helpful?
Yes
No
Sunday, August 9th, 2020 AT 11:52 AM (Merged)
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
There is a link to the PCM, but ABS is controlled by its own seperate module.

ABS, is designed to not lockup the brakes, but is also dependant on mechanical items like the pads, rotors, calipers.
Was this
answer
helpful?
Yes
No
Sunday, August 9th, 2020 AT 11:52 AM (Merged)
Tiny
MOSOPKEAT
  • MEMBER
  • 1 POST
  • 2005 TOYOTA COROLLA
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 73,000 MILES
Hello, my question goes thus. Must my brain box yellow light be on?When I start my car all the alert lights disappear i.E the seat belt light, car door light, brake light e.T.C when I do the needful to them(e.G putting on my seat belt). So my concern is this, the brain box light going off means what?

Thanks
Was this
answer
helpful?
Yes
No
Sunday, August 9th, 2020 AT 11:53 AM (Merged)
Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
When you turn on the ignition, the ECU will power up and the check light will turn on, when you start the car if all systems are operation normally the check light will turn of, if it stays on, then there is a problem.

Mark (mhpautos)
Was this
answer
helpful?
Yes
No
Sunday, August 9th, 2020 AT 11:53 AM (Merged)

Please login or register to post a reply.

Sponsored links