DHumvee
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I am still in the process of tracing wires that GP cut with a grinding wheel.That is an interesting thing that seems to happen often.
If you look at page 49 of the attached document you will see the trans. check light is only powered when the trans relay is closed, that is when the run switch is on.
I have not seen this personally so I have not had the opportunity to trouble shoot this.
I would be interested in what voltage is on pin U of the TCM and also what voltage is on wire 290/291 measured to ground with the run switch off.
That's better than really bad news I suppose. We just moved from Fl. to Al. , my tools aren't here yet. As soon as I can get my hands on a voltage meter I will respond. My first truck took forever to be released, this one only took two weeks. I had to get it picked up from GP before the Al. move was a done deal. That means I got to ship it twice! Thanks for your reply Sir.That is an interesting thing that seems to happen often.
If you look at page 49 of the attached document you will see the trans. check light is only powered when the trans relay is closed, that is when the run switch is on.
I have not seen this personally so I have not had the opportunity to trouble shoot this.
I would be interested in what voltage is on pin U of the TCM and also what voltage is on wire 290/291 measured to ground with the run switch off.
There are two different 290/291s on each side of the transmission relay I am talking about the "switched" side of the relay.
Also step on the brake and see what the lamp does with the run switch off.
I know where the panel and red reset button is but what needs beating on?Relay will sometimes stick....with ignition off...go back to panel behind front right seat where relay is and pound on it...sometime relay will reset.
The panel close to relay bolts...about in the middle.I know where the panel and red reset button is but what needs beating on?
That is an interesting thing that seems to happen often.
If you look at page 49 of the attached document you will see the trans. check light is only powered when the trans relay is closed, that is when the run switch is on.
I have not seen this personally so I have not had the opportunity to trouble shoot this.
I would be interested in what voltage is on pin U of the TCM and also what voltage is on wire 290/291 measured to ground with the run switch off.
There are two different 290/291s on each side of the transmission relay I am talking about the "switched" side of the relay.
Also step on the brake and see what the lamp does with the run switch off.
The panel close to relay bolts...about in the middle.
The suspense was killing me so I opened the panel. What sticks? I want to thump it...The panel close to relay bolts...about in the middle.
Update: I found my meter... I haven't had time to find the two wires 290/291 yet but 687 A and B (the indicator TRANS light wires) are getting 8.7 v all the time making the dimmer light and 11.6v when the run switch is ON for the brighter light. Ideas??I am still in the process of tracing wires that GP cut with a grinding wheel.
That's better than really bad news I suppose. We just moved from Fl. to Al. , my tools aren't here yet. As soon as I can get my hands on a voltage meter I will respond. My first truck took forever to be released, this one only took two weeks. I had to get it picked up from GP before the Al. move was a done deal. That means I got to ship it twice! Thanks for your reply Sir.
relay is greenThe suspense was killing me so I opened the panel. What sticks? I want to thump it...
View attachment 884923
No sir, I unplugged the lamp, put one lead in the female side and touched the male side. When I switched it to RUN the voltage increased.Both lamp wires are getting 8.7V as measured to ground?
EDIT and was that measured with the lamp plugged in?
Everything is working but I have been chasing something that's making it run hot.Just out of curiosity, are any 24 Volt systems getting voltage? If so, the problem is in your EESS or PCB. If not, then it is most likely the 12 V solenoid (unless you have a short circuit somewhere bypassing the relay).
I should have been more specific. When the ignition is off, is there any 24Volt current flowing? If so, the PCB/EESS is sending power to the 12 V relay and the problem is the PCB not the 12V relay.Everything is working but I have been chasing something that's making it run hot.
Good Afternoon, I wanted to thank you for your response and help with my question about the trans light on my truck. I wasn't ignoring your advice, we were moving and I hadn't sat down in weeks long enough to figure out where those wires were located so I could check them. I am new to the hobby and eager to learn. Thanks again for your help.That is an interesting thing that seems to happen often.
If you look at page 49 of the attached document you will see the trans. check light is only powered when the trans relay is closed, that is when the run switch is on.
I have not seen this personally so I have not had the opportunity to trouble shoot this.
I would be interested in what voltage is on pin U of the TCM and also what voltage is on wire 290/291 measured to ground with the run switch off.
There are two different 290/291s on each side of the transmission relay I am talking about the "switched" side of the relay.
Also step on the brake and see what the lamp does with the run switch off.
How would I tell if there's 24v flowing?I should have been more specific. When the ignition is off, is there any 24Volt current flowing? If so, the PCB/EESS is sending power to the 12 V relay and the problem is the PCB not the 12V relay.
They are working fine. I just saw another owner asking the exact same question (same symptoms) on one of the Face Book groups. Must be pretty common, Thank you guys for the help.If you can turn on your lights when the ignition is off, or operate the flashers, then you know.
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