truck dead after ECU disconnection?
#1
07-13-2011, 12:07 PM
Join Date: Jul 2010
Posts: 214
Likes: 0
Received 0 Likes
on
0 Posts
truck dead after ECU disconnection?
Hey guys.
I am trying to diagnose a code 332 (EGR valve movement not detected). It's an '88 with a 7.5.
All the electrical/vacuum tests I performed checked out ok, and the valve itself is not physically stuck. I got to the point where I wanted to disconnect the ECU to back probe terminals 26 and 27 (EVP ground/signal) and 33 (EVR ground). I shoved a paper clip into terminal 27 and reconnected. Now the truck won't get any power in the ON position.
The only thing I can think of that I did wrong is disconnecting the ECU with the battery connected. I have the EVTM but not the actual service manual. I'd appreciate any help. Thanks.
I am trying to diagnose a code 332 (EGR valve movement not detected). It's an '88 with a 7.5.
All the electrical/vacuum tests I performed checked out ok, and the valve itself is not physically stuck. I got to the point where I wanted to disconnect the ECU to back probe terminals 26 and 27 (EVP ground/signal) and 33 (EVR ground). I shoved a paper clip into terminal 27 and reconnected. Now the truck won't get any power in the ON position.
The only thing I can think of that I did wrong is disconnecting the ECU with the battery connected. I have the EVTM but not the actual service manual. I'd appreciate any help. Thanks.
Thread
Thread Starter
Forum
Replies
Last Post
infincool
1994.5 - 1997 7.3L Power Stroke Diesel
22
03-13-2007 04:57 PM