Glow plug card burnt, Can this be fixed? or do i just go with manual switch?

Glow Plug drama video question

http://www.youtube.com/watch?v=86-Ksv54Xyc&feature=youtu.be

What happens with the card in when you ground the blue wire from the card? Does it active the glow plug relay?

First off. that is not your glow plug controller card.

The bottom relay terminal has continuity to ground because at least one GP has resistance.

You said intermittent power on the blue wire, is that when it is connected to the relay? It should have power(coming thought the relay coil) when the key is on.

If you simply follow the -20TM troubleshooting procedure, it covers testing every single component(except the controller card).

The controller card is between the fuse box and the steering column.

Thanks for the quick response... i thought that card looked nothing like the glow plug card but was not exactly sure. It is kinda hard to test some of the components by yourself. i will re read the tm and see what i missed.

Also, if you simply browse through a parts TM(ends with P), you can see the location of the GP controller card. And Identify the cards you questioned in your vid.

They are for the diagnostics port, for the STE/ICE.

Isn't that first card shown in the video the tach buffer card?

The glow plug card should be hanging down around the steering column. It may even still be attached to the bracket like it is supposed to be.

I'm guessing that you only read voltage on the green ( blue ) wire when it was connected to the relay with the key on. If so, that would show voltage is coming though the relay coil from the pink wire. If you are getting a voltage reading on the green ( blue ) wire when it is not connected to the relay, then there is an issue somewhere, as that wire is what the glow plug card connects to ground to energize the relay.

Thanks again I added that to the video so anyone else who watches this video will also know

I am pretty sure you are correct. I am going to read the TM again tonight and check everything again in the morning.... When i was getting power to the relay i wonder why it was not engaging it?

It is possible that the relay is engaging like it is supposed to, but that the internal contacts are fouled with carbon buildup. I had to replace mine for that very reason.

As mentioned before, follow the GP system trouble shooting steps outlined in the TMs. With that and a meter, the problem should become evident.

Good luck!

The controller activates the GP relay by switching/providing a ground. Power is supplied to the relay when the key is on.

So to simplify that and answer your question another way is, yes you had power, but you did not have a ground(complete circuit).

Pull your controller card, inspect and clean it and reinstall it.

Also check your temp sensor. Is it connected? Wires at the connector look ok? Did it test good? (all in the -20).

doghead said:

Pull your controller card, inspect and clean it and reinstall it.

Click to expand...

But keep your fingers off the contacts while you're doing that! I was cringing when I watched you handle that card on the video. Hope you didn't fry it!

Never handle the contact strip on an electronic card. With some you can get away with it, others, not so much.

The really neat thing about ESD (electrostatic discharge) damage is that it can be hidden. It doesn't show up right away, or it doesn't kill the card completely. Just makes it act wonky.

This is why you have plenty of people saying things like, "Oh, I handle the edges of cards all the time and I never had a problem!"

They simply don't know what problems they have caused. They don't make the connection between their careless handling and the problem that shows up days or months later.

I am going to give that a try tomorrow.... I need to first test the relay completely and make sure it is working fully. Then make sure i am getting power on the pink wire.

You would improve your results(help) and keep the forums much cleaner if you would simply run one thread on this truck(issue).

Yes you can solder that. Don't know if something else is bad though.

I would buy a new one from Antennaclimber.

Card is fixed... maybe???? is this normal???

http://www.youtube.com/watch?v=4dHGTX4l7VU&feature=youtu.be

Start here:

http://www.steelsoldiers.com/showthread.php?62477-GP-Module-Theory-of-Operation

parlusk said:

Card is fixed... maybe???? is this normal???

http://www.youtube.com/watch?v=4dHGTX4l7VU&feature=youtu.be

Click to expand...

Once again, in the -20TM, troubleshooting section, cranks but does not start, step19(electrical troubleshooting). 19. ENGINE CRANKS BUT WILL NOT START; ENGINE COLD; “WAIT” LIGHT OPERATES

Read and follow the instructions. It even tells you how long the cycle should be.

Do not start a new thread for each step of this problem or each of your new youtube vids.

All that does is scatter around bits of information and make it difficult for members to help you.

I read the section before posting and all i got was "Glow plugs will cycle to 0 volts in approximately 20 seconds after firstoperation. Time will shorten as glow plugs become hotter." my glow plugs stayed were still on when i shut the vehicle down, over 60 seconds later. I searched the SS and the TMs and could not find anything on this. I saw your comment saying not to start a new thread each time, that is why i posted this video to my thread that i had already started.

So, if the GP relay stays on, that might explain why your card melted.

Are all 6 of your glow plugs good?

What was the voltage at the orange wires when the key was on?

All of this is part of the troubleshooting. You must follow through the procedure to asses the issue.

The TM does not say 0 volts.