Hey, all. So got Service StabiliTrak message on the dash. After scanning for the code, it's throwing C0110, which is related to Pump Motor Circuit.



After googling it around, I came to a conclusion, to start, I need to replace the pump motor. Please let me know if you think I should check something else.



I am trying to figure, what is a pump motor. Is it an ABS Motor Pump? And where is located, is it what's below the brake reservoir?



Thank you all in advance.

 

I think I might've found the solution. When I unplugged the connector to the pump motor, there was visible corrosion on one of the pins. I cleaned it. Plugged the connector back. Erased the codes, and the StabiliTrak message disappeared (as well as ABS and Stability Control lights). I took it on the dirt road, and ABS is working, as well as stability control. I hope it was that easy, but time will tell.

 

Nice find. Time will tell but it makes sense that corrosion there could cause that code.

To answer your earlier question, the pump motor is part of the ABS module, which it sounds like you found. That code alone doesn't mean you need to replace the pump, it's saying there is a Circuit issue to the pump. So yes it could be the pump motor itself, but there is likely quite a bit of wiring and connections involved that could cause that issue as well. Such as corrosion at a connection.

 

So, it appears my caddi threw me a curve ball. Same issue is back. The small corrosion I cleaned, was on the master cylinder, 2-pin connector. Now I'm realizing, I don't think it had anything to do with the code? Was it coincidental?



What should I do next? I was thinking of inspecting the ABS Control Module, but I'm not sure of an easy way of getting to that connector. Or what else I should check?

 

Your ABS Module - the square piece with all of the brake lines coming in and out - is actually 2 halfs. The Electronic Brake Control Module, and the ABS Modulator Valve - which contains the pump motor.

It may be worth looking at the large connector going into the module, but that code is saying the control module half, is sensing a problem with the modulator valve half. So you would need to take it all apart to even test anything. Odds are you are looking at that unit needing to be replaced, or at least taken apart to test further. Not a quick or easy (or cheap) job.