PCM Ground Location
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
NO! There are numerous locations where grounds are located! The PCM is actually grounded in more than one location. Here is a post that I started a while back that has a lot of electrical info and a list of ground locations.
http://forums.corvetteforum.com/show...ion&forum_id=1
I will look up the exact PCM ground locations when I get home later tonight.
What problems are you having that you think is being caused by bad PCM grounds??
BC
http://forums.corvetteforum.com/show...ion&forum_id=1
I will look up the exact PCM ground locations when I get home later tonight.
What problems are you having that you think is being caused by bad PCM grounds??
BC
Thread Starter
Le Mans Master
Joined: Jan 2001
Posts: 5,786
Likes: 6
From: Lafayette Colorado
I am not really having problems, I am finishing up the install of my LM-1 wideband O2 reader with accessory signal recorder. I would like to record the MAP and IAT signals. The accessory reader needs to be grounded to the same ground point as the sensors or as close as possible. I assume that all the sensors where grounded through the PCM and it was grounded in a single location.
Keith
Keith
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Keith
A good place to ground the sensor should be at point# 9 on the diagram. That is where the battery grounds to the frame. Here is a picture of it:
Easy access and a good ground point!
Bill C
A good place to ground the sensor should be at point# 9 on the diagram. That is where the battery grounds to the frame. Here is a picture of it:
Easy access and a good ground point!
Bill C
