ABS Pump runs with key off...

[PRY4SNO]

Looking for any tips or tricks, things to keep in mind when replacing the pump. Is it straightforward or are there any things I need to keep in mind?

Right now I am under the assumption that I can just R&R the old pump with the new one, flush the brake fluid/bleed the brakes and I'm good to go.

The other question I have is about the need to reprogram or not. I've read that I should be okay without recoding if all but the last two digits of the PN match, otherwise it will need recoded?

 

[Terry]

Mine had the same problem years ago. I'ts the module on top of the ABS pump that is the problem, unplug the power connector wiring until you can fix it. The module comes off of the pump with a few screws no need to undo lines or bleed the system. I was able to get a brand new module from the dealer, but I'm sure that there are module repair shops out there. I believe the module has old school relays inside it that the contacts stick closed sometimes causing this problem. I had to program in the gear ratio and tire size into the new one with my Snap-On scan tool.

 

[Terry]

You could try raping on it to see if the relay un-sticks.

 

[PRY4SNO]

Like I said, I'm just going to replace the pump. I'm off to work out of town next week, no time to wait for a module repair. If they go bad as often as I've heard having a spare will come in handy. Was thinking I'd just have the one I pull out sent away for repair and I can either keep it for later if needed, or sell to recoup some cash.

Just wanted to confirm that all I'll need to do once I install the newer pump/module is flush and bleed the brakes. I have no record of them being done in the documentation that came with the truck, so it's time to replace the fluid anyways.

 

[PRY4SNO]

Also wondering if I'll need to bleed the ABS pump itself with any kind of special tool, and not just pumping the brake pedal like a normal fluid flush?

 

[Terry]

Also wondering if I'll need to bleed the ABS pump itself with any kind of special tool, and not just pumping the brake pedal like a normal fluid flush?

You need a scan tool that has a bleed function.

 

[PRY4SNO]

Understood.

I'm going to go out to the truck and plug in the generic tool I have on hand right now, see if it can access the ABS menus.

The app I'm using is Torque Lite, is that generally effective on these rigs?

This is my first Cummins, but I'm not new to working on vehicles. I come from the Audi-VW world so appreciate everyone's patience if/while I ask n00b questions.

 

[PRY4SNO]

Okay, finally got an app to link up with the OBDII reader (Car Scanner ELM OBD2 for Android), but it won't/can't find the ABS module (or other individual modules).

Might have to find someone with a professional domestic scanner, unless a VCDS HEX-CAN cable or OBDeleven Pro will do it (don't think so, as I believe they're limited to VAG cars).

 

[Joe Mc]

Suggest you acquire a FSM and review bleeding process. Best $$ I spent on my truck was the FSM. You can get one here:
https://www.genosgarage.com/product...nual-2002-cd/dodgeram-factory-service-manuals
$36.00...