CAT 287B high flow not engaging

Hi I'm having problems getting my high flow circuit to work on my CAT 287B. Tested solenoids, checked wiring from solenoids to ecm. Checked fuses, power and ground. If someone by chance has a wire schematic and test procedures would greatly appreciate it. It has a ground force tree saw attachment. Serial number is CAT0287BHZSA01405. And schematic on interlock to please. Thanks for any advice you may have.

CAT 287B high flow not engaging