Glow Plug Mod
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5th Wheeling
Joined: Nov 2020
Posts: 37
Likes: 4
From: Lemont Illinois
Glow Plug Mod
Can anyone tell me if there is a way to test the individual glow plug output circuits at the module on the 6.0? I have new glow plugs as well as new left and right side harnesses that all test good. The main harness also tests good between the module and the new L & R harnesses. I hate being a parts changer without knowing for sure that module is bad.
Mountain Pass
Joined: Sep 2019
Posts: 195
Likes: 15
From: British Columbia, Canada
If everything is new from the module to the plugs then I would check the positive wire off the pass battery to the module for power and then the only thing left would be the module its self imo...
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5th Wheeling
Joined: Nov 2020
Posts: 37
Likes: 4
From: Lemont Illinois
ok. I was hoping for some info on how to test the mod. Voltage outputs at each terminal and such?
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Fleet Mechanic
Joined: Jul 2018
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From: Jacksonville Florida
I would think that if you turn koeo you will get power to each of the pins feeding your glow plugs. Then the module will shut off after cylinders get to 60 70 ° .
Check the pin on the one you have codes on versus one you don't. See what happens.
Check the pin on the one you have codes on versus one you don't. See what happens.
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
I had a #1 plug that would show a code and after putting a new one in and checking the harness
was still getting a DTC telling me it was bad. Dropped in a known good GPCM the problem went
away and never came back.
was still getting a DTC telling me it was bad. Dropped in a known good GPCM the problem went
away and never came back.