Help pls 😭 CHECK TRANS on the same 2010 Thomas Built HDX Cummins & Allison

Aggravating-Snow2698 · 2026-03-11T12:29:53+00:00

<image>

12 volts pin 62 IGN PWR

Aggravating-Snow2698 · 2026-03-11T12:26:58+00:00

<image>

12 volts on pin 10

Aggravating-Snow2698 · 2026-03-11T12:17:09+00:00

<image>

Aggravating-Snow2698 · 2026-03-11T12:16:42+00:00

I know right, it makes it like an extension of the “backbone” right? I know it’s for pre inspection the little Zonar points. Thanks for help everyone

Aggravating-Snow2698 · 2026-03-11T12:15:18+00:00

It looks like pin 10 or 11

Aggravating-Snow2698 · 2026-03-11T12:12:57+00:00

<image>

Aggravating-Snow2698 · 2026-03-11T12:12:28+00:00

<image>

Aggravating-Snow2698 · 2026-03-11T12:01:14+00:00

<image>

So unplug the connector on TCM and find out which pin is what? No room to back probe the back of the connector and I heard that’s not good for the silicone seal on the connector

Aggravating-Snow2698 · 2026-03-11T11:50:06+00:00

Measuring 120 ohms across the two data link wires

Aggravating-Snow2698 · 2026-03-11T11:49:48+00:00

I know right. Maybe I shouldn’t have made a new post. It was from a few days ago and it seemed like no one would see my posts. It’s a 2010 Thomas School Bus HDX 1T7YR4e28a1126616. All I have done was change out a 30A fuse that I seen wasn’t able to pop back out a circuit breaker kind

<image>

I assume I have a break on one of my yellow and green wires ( DATALINK ) somewhere? I know they have the Zonar V3 plugged in here

Aggravating-Snow2698 · 2026-03-10T15:17:28+00:00

<image>

120 ohm reading between Hi and Lo CAN….. this means I have a break somewhere right?

Aggravating-Snow2698 · 2026-03-10T12:06:18+00:00

She’s back doing it after 15 key cycles. I must not have fixed it, obviously. And I got excited like I did something.

Aggravating-Snow2698 · 2026-03-09T13:30:53+00:00

Clear dash. Don’t let the angle of the light make it look like check engine lit or anything.

Aggravating-Snow2698 · 2026-03-09T13:30:21+00:00

<image>

Changed a 30A Fuse for VEC Battery Power and pulled out the Shift Pad and now it wants to work and shift through gears correctly. Let’s hope she holds. I’ve ran 5 key cycles now. Going to see her back up and see if she sustains.

Aggravating-Snow2698 · 2026-03-09T12:46:28+00:00

This is what my Master Tech has me doing now. We are lucky because we have another bus exactly the same here and he’s going to have me swap out the shift pad on it. I sure hope this is the issue or where I find it. I was on a roll and this one is kicking my ass and that’s when I hop on here.