Toyota Yaris Forums - Ultimate Yaris Enthusiast Site
 

 


 
Go Back   Toyota Yaris Forums - Ultimate Yaris Enthusiast Site > Second Generation Toyota Yaris Main Rooms > General Yaris / Vitz Discussion
  The Tire Rack

Reply
 
Thread Tools Display Modes
Old 03-23-2019, 04:28 AM   #1
jimbo34
I've made a post!
 
Drives: Yaris
Join Date: Jun 2017
Location: Madrid
Posts: 1
Possible broken ECU

I need some advice please. I was trying to jump start my wifes 2003 Mk1 Yaris in the dark and unfortunately I managed to reverse the polarity on the jump cables. The car was completely dead afterwards with the 120A ALT (alternator?) fuse and the 15A EFI (fuel pump?) fuses obviously blown.

After trying to jump again (correctly this time) the car had power but when I turned the ignition, the engine would turn over (starter working) but the car won't start.

I've taken the car to a local garage, the guy changed some more fuses quickly but says that because the engine check light doesn't come on when the key is turned, the ECU is broken. I'm inclined to agree but for one thing, the immobiliser switches off when the key is inserted (red security light stops flashing). Does this indicate that the ECU is still, at least partially functional or are the 2 unrelated? Could it not be starting due to problems with the alternator or fuel pumps?

Finally, if it is the ECU, I've seen second hand units on ebay for less than 100 euros. Is it a straightforward job to simply plug in a new one and change the ignition switch?

Any help would be appreciated!

Last edited by jimbo34; 03-23-2019 at 05:05 AM.
jimbo34 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Need Help with 2NZ ECU pinout Aleil DIY / Maintenance / Service 3 12-28-2020 09:40 AM
ECU Extension Harness (1st Gen Echo/Vitz) ITA Performance Modifications 4 08-24-2018 03:09 PM
I finally cracked the Odometer and SRS ECU code CTScott DIY / Maintenance / Service 22 10-27-2016 01:50 AM
standalone and stock ecu Radou Performance Modifications 0 06-16-2013 04:47 PM
Yaris ECU broken??!!!!!! phb10186 General Yaris / Vitz Discussion 30 05-26-2010 09:56 AM


All times are GMT -4. The time now is 08:35 PM.




YarisWorld
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.