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Ecm1 fuse blows when accelerating from a stop

Tiny
WILLIAMOO7800
  • MEMBER
  • 2005 CHEVROLET AVEO
  • 1.6L
  • 4 CYL
  • MANUAL
  • 119,220 MILES
At idle car does fine once put into first gear to drive off soon as I give gas I can hear the fuse blow.
Wednesday, May 13th, 2020 AT 3:35 AM

9 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

Which fuse block is this fuse located?

Can yo tell me the fuse number? It will say F and a number. My diagrams do not show ECM 1 fuse.

Roy
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Wednesday, May 13th, 2020 AT 4:30 AM
Tiny
WILLIAMOO7800
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  • 5 POSTS
It is located inside the car first row closest to the front of car sixth fuse down. My apologies it says ECM/TCM.
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Wednesday, May 13th, 2020 AT 4:57 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
No worries.

The fuse controls the ECM, the TCM and theft module.

What I suggest is this: With the engine running disconnect the transmission control module under the dash to the left of the brake pedal. Then put it in drive.

If the fuse fails, the ECM is bad. If the fuse stays, the transmission module is bad.

I attached the picture of the location for you below.

Roy

2. Locate the transmission control module (TCM) electrical connector next to the brake pedal assembly.
3. Disconnect the transmission control module (TCM) electrical connector.
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Wednesday, May 13th, 2020 AT 5:13 AM
Tiny
WILLIAMOO7800
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Okay, thanks. I will let you know what happens.
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Wednesday, May 13th, 2020 AT 5:16 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome.

Keep us updated.

Roy
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Wednesday, May 13th, 2020 AT 5:20 AM
Tiny
WILLIAMOO7800
  • MEMBER
  • 5 POSTS
Okay, so actually the car listed above is 2004 not a 2005. The ECM blows constantly. I was able to drive a very short distance. Now it blows as I go to start it. Code reader says p0342, p0122, p1122 and U0101. Any suggestions very much appreciated.
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Sunday, May 24th, 2020 AT 5:55 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
What did you find with the suggestion I posted? Let us start there.

Roy
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Monday, May 25th, 2020 AT 5:58 AM
Tiny
WILLIAMOO7800
  • MEMBER
  • 5 POSTS
Well, I have a manual transmission so there is no TCM. I did change the ECM and fuse still blows.
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Monday, May 25th, 2020 AT 6:38 AM
Tiny
ASEMASTER6371
  • MECHANIC
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Okay, there is also the theft deterrent module there as well. Before you replace it, disconnect it and make sure the fuse holds.

If it does not then you have a wiring issue between the fuse block and those modules.

I attached a picture of the location of the module for you.

Roy
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Monday, May 25th, 2020 AT 6:52 AM

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