Humvee glow plug controller testing

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ghiltgen
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Humvee glow plug controller testing

Post by ghiltgen » Mon Apr 11, 2022 6:32 pm

I found a YouTube video put out by the army showing testing procedure for glow plug controller. It details testing for continuity between 2 leads and checking for a certain resistance between 3 others. Mine failed all the tests described so I purchased a new one. When I bench tested the new one it also failed! Makes me believe the there’s nothing wrong with my original.
Any insights?
Name of video is hmmwv testing fuel system
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Re: Humvee glow plug controller testing

Post by Action » Wed Apr 13, 2022 7:11 am

GPC ir TSU ? Would those tests give different results for each sender?

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Re: Humvee glow plug controller testing

Post by ghiltgen » Mon Apr 18, 2022 11:04 am

I’m a newbie Jason, I m not sure what the difference is. I’ll see if it says on the controller.
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Re: Humvee glow plug controller testing

Post by Action » Wed Apr 20, 2022 12:16 am

And, when did the Army start making youtube training videos? That sounds fishy to begin with.

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Re: Humvee glow plug controller testing

Post by AAVP7 » Thu Apr 21, 2022 8:13 am

If it is this video https://www.youtube.com/watch?v=c0IpRn3m3bs, it seems to be legit. Someone uploaded an old army training video. Can´t watch the video here at work, though.

As for testing the GPC: The test procedure for the GPC given in the "troubleshooting manual" is for older, relay-based GPC only. The manual states that newer solid state GPCs can´t be tested.

Even my early 1985 Humvee already had a solid state GPC when I received it, and I never stumbled upon an old variety, so I guess that the majority of GPCs out there are new solid state ones.

I´ve had a few buddies of mine also fall for this; they followed the test procedure in the manual, deemed their GPCs to be faulty, and bought new ones, sometimes even twice, before realizing that their GPCs were not faulty at all. That sentence about the test only being valid for non-solid-state GPCs is pretty well hidden below the test prcedure.
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