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287b aux hydraulic not wokring

willowcreek

Member
Joined
Oct 24, 2011
Messages
7
Location
sheridan
I know this has been posted a lot in there but haven't found anything to help me out

have a 287b and when I went to hook up grapple it wont function

CAT0287BKZSA02223

I have checked the switches in the joystick and they are working but not sure where to go from there

also the speed control wont work (rabbit turtle switch)
 

willowcreek

Member
Joined
Oct 24, 2011
Messages
7
Location
sheridan
IMG_20200212_103008615.jpg IMG_20200212_103002715.jpg
The yellow light is always on and not sure if that is causing me issues or where to go from here
All fuses and relays are good
 

willowcreek

Member
Joined
Oct 24, 2011
Messages
7
Location
sheridan
Yes I have schematics

I tested them by continuity
Also saw somewhere that if I test ecm from pin 3 to pin 60 I should get under 5ohms I had 28ohms
So I'm assuming that that means the ecm is junk
 

willowcreek

Member
Joined
Oct 24, 2011
Messages
7
Location
sheridan
so I got a new aux ecm and still not working
the yellow light is now off but no aux function
also no speed control
 

Mark250

Senior Member
Joined
Aug 30, 2015
Messages
1,243
Location
victoria,Australia
Occupation
heavy equipment technician
Tbe ECM needs to be programmed.to suit the joystick
Either push button or Thum roller must be done with ET
 

Nige

Senior Member
Joined
Jun 22, 2011
Messages
29,379
Location
G..G..G..Granville.........!! Fetch your cloth.
so it will be a trip to the dealer then??
wll that fix the speed control as well??
You could ask the dealer Service Dept beforehand if they can flash the Aux ECM on the bench. You wouldn't have to take the machine to them in that case.

The rabbit/turle switch problem is not likely to be fixed via the Aux ECM. If I was you I'd start looking at the control circuit for it. I sent you a copy of the electrical schematic. Check your PM's.
 
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