quick question on GPs
Senior User
Joined: Dec 2011
Posts: 200
Likes: 0
From: Salem, IN
You assumed wrong. I guess you completely forgot to look at the post above where I said it was the Brown w/ Red Stripe wire that activates the glow plug relay 
The Brown w/ Red Stripe will have 12v on it until the PCM grounds it out, then it will have 0v and it will ohm to ground.
The Brown w/ Red Stripe will have 12v on it until the PCM grounds it out, then it will have 0v and it will ohm to ground.
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Senior User
Joined: Oct 2003
Posts: 351
Likes: 1
From: Sullivan, IL USA
I did read what you wrote, and my reply was if PCM wire goes to ground, then why would I read 12v from it when disconnected. If it goes to ground then it should be 0v.
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Senior User
Joined: Dec 2011
Posts: 200
Likes: 0
From: Salem, IN
You will read 12v on the Brown w/ Red stripe wire when the PCM isn't grounding the wire.
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