Odd TPMS Issue?

[watersupply189]

Don’t you love electrical gremlins?

I hope it will be an easy fix for you.

Thanks for the update.


2016 Ram Laramie 3500, G56, 6.7, CC, 4x4

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[mseitz24]

Awesome, thanks.

That’s what I’ve been trying to find online.

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[mseitz24]

Alright, I finally got it.

I worked my way backward; the low voltage at the OBD port had low voltage at the IP2 connector, pulled the fuse box, and had 12v.

It took some trial and error to determine which pins I looked for at each connection.

I plugged the connector back into the fuse box, re-tested, and was getting 12v now back to the obd port.

I figured maybe it was just a connection issue, but pulling things apart and putting them back together solved it.

That worked for my wife's power window switch, but no such luck here.

I hooked everything back up and still had the original issue.

Tested again and low power again.

I pulled things apart, and the same thing happened: low voltage, back to the fuse box, which tested good.

At that point, I figured it was somewhere between the fuse box and the IP connector, but since messing around in the fuse box seemed to fix it temporarily, I started looking closely there and found the problem.

I found a pinhole in the insulation about 2 inches from the end.

I only noticed that it was slightly swollen and that it oxidized copper teal blue.

It's just a speck of blue on the red wire.

I cut it, stripped both sides, and soldered in about an inch of new wire, and it's good now.

4C14D860-C38B-4BDD-ADFF-28B00CE323FC.jpg

01581D88-4E2F-43DF-8CF1-7BA561FEDD03.jpg

Cross section of where the hole was.

B05B7B2F-8CA1-45F3-A71E-2F0136E355B9.jpg

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[watersupply189]

Alright, I finally got it.

I worked my way backward; the low voltage at the OBD port had low voltage at the IP2 connector, pulled the fuse box, and had 12v.

It took some trial and error to determine which pins I looked for at each connection.

I plugged the connector back into the fuse box, re-tested, and was getting 12v now back to the obd port.

I figured maybe it was just a connection issue, but pulling things apart and putting them back together solved it.

That worked for my wife's power window switch, but no such luck here.

I hooked everything back up and still had the original issue.

Tested again and low power again.

I pulled things apart, and the same thing happened: low voltage, back to the fuse box, which tested good.

At that point, I figured it was somewhere between the fuse box and the IP connector, but since messing around in the fuse box seemed to fix it temporarily, I started looking closely there and found the problem.

I found a pinhole in the insulation about 2 inches from the end.

I only noticed that it was slightly swollen and that it oxidized copper teal blue.

It's just a speck of blue on the red wire.

I cut it, stripped both sides, and soldered in about an inch of new wire, and it's good now.

4C14D860-C38B-4BDD-ADFF-28B00CE323FC.jpg

01581D88-4E2F-43DF-8CF1-7BA561FEDD03.jpg

Cross section of where the hole was.

B05B7B2F-8CA1-45F3-A71E-2F0136E355B9.jpg

Thanks for the update.

I'm glad you found the issue.


2016 Ram Laramie 3500, G56, 6.7, CC, 4x4

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[Corkey]

That would have killed my patience, kudos to you, LOL.

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[AK Bob]

Thanks for the update.

You did an excellent job finding and repairing the damaged wire.

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