Possibly dead ECU? - Peugeot Forums
Peugeot Forums - Peueot - Citroen Community
Home :: Peugeot Forums :: Rules :: Articles :: About Us :: Partner Vendors :: Advertise

Go Back   Peugeot Forums > Peugeot Models > 307
PeugeotForums.com is the premier Peugeot All Forum on the internet. Registered Users do not see the above ads.
Like Tree1Likes
  • 1 Post By Mogreid

LinkBack Thread Tools Display Modes
Old 09-10-17, 10:16 AM   #1
Join Date: Jul 2015
Location: Stavanger, Norway
Posts: 30
Default Possibly dead ECU?


2005 307 SW 1,6 petrol.

Two years ago I posted this: https://www.peugeotforums.com/forums/...-motor-165097/

Long story short: Dead starter motor and melted battery contact, believed to have happened due to the starter staying enganged and acting like an extra generator.

I believe the same thing has happened again, but this time the battery contact did not melt, and I'm afraid that it has fried the ECU.

A friend had borrowed the car and taken it for an 8 hour drive. Once they got home they made a quick stop, and when they got back in the car again it wouldn't start (starter motor just clicking). I believe they also tried to jump start it with jumper cables, unsuccessfully. They then towed the car to my place.

Thinking it was a dead starter motor I gave it a few taps, and it started cranking again, but does not start. I tried to connect a code reader, and it comes back with "Link error". This reader has worked before.

It has no spark, no power to the coil pack, no fuel pressure (the pump does not prime when I turn the key to run and there was no pressure on the valve in the engine bay), and no communication with the OBDII fault code reader.

I've gone over all the fuses in the engine bay (including the maxi fuses) and all the likely ones inside the car. None were blown apart from a 20A one that supposedly goes to the headlight washers, which my car doesn't have. Changed that, and it changed nothing.

There is a 30A fuse in the engine bay that I think goes to the ECU. This isn't blown, but neither is there any power on it when I turn the key.

At this point I'm ready to call the ECU fried. Is there anything else it could be?
Mogreid is offline   Reply With Quote Quick reply to this message
Sponsored Links
Old 09-10-17, 11:38 AM   #2
Gibbo's Avatar
Join Date: Apr 2011
Location: Southport
Posts: 11,615

I'd only class it dead if Planet can't access it.

Isn't there also another smaller fuse in the interior fuse box?
Planet Diags: Sefton - Merseyside
Gibbo is offline   Reply With Quote Quick reply to this message
Old 09-10-17, 02:15 PM   #3
Join Date: Jul 2015
Location: Stavanger, Norway
Posts: 30

Well this is embarrassing. There was a fuse missing in the engine fuse box. Apparently whoever tried to get my car running before they towed it back to me went over the fuses, and forgot to replace one. Weird though, it's supposedly only for the cooling fan relay and diesel injector. I have a petrol engine.

At any rate, problem solved, car running again, and the shop that did my starter last time will replace it for free.
madbadandold likes this.
Mogreid is offline   Reply With Quote Quick reply to this message
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Peugeot Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT. The time now is 07:58 AM.

Powered by vBulletin® Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.