motronic relay relationships - Alfa Romeo Bulletin Board & Forums
 
LinkBack Thread Tools Display Modes
post #1 of 1 (permalink) Old 11-25-2010, 02:23 AM Thread Starter
Registered User
 
fatdarryl's Avatar
 
Join Date: May 2010
Location: Cornwall, UK
Posts: 158
motronic relay relationships

hi, does anybody know if the motronic ecu used in the alfa 75 TS 'knows' if a relay that it drives is down?
I have just had to check the connections for my variator solenoid relay as the variator was getting no voltage, it turns out that the wiring was fine, but the ecu pin 31 connection to the relay base was not grounding itself as it should at around 1200rpm to actuate the relay. I fitted a new relay and actuated it manually by earthing the relevant pin, which worked the variator fine and after a couple of cycles of doing that, the ecu started to work the relay again and has been working fine ever since.
Just wondered if it would have sensed a duff relay and 'switched off' the variator function?

Tim Bartle - Junior Alfista
1991 75 2.0 Twinspark with added lightness
fatdarryl is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Alfa Romeo Bulletin Board & 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:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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 Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome