-Could you explain your situation a little more?Which lights are blinking? Some do to show a fault with a circuit.
Are any lights on when it is running?
Does the machine start normally? Has any control been bypassed?
How does the fuse panel look? I have repaired many with corroded fuse panels.
Has any repairs been done recently?
Can you send me your serial number? It will help with searching for recent issues.
Looking at the schematic, it is possible to have a back feed of voltage at the fuel pump relay (green 110 wires) , main power relay (112 purple wires) ("A" in group with four others) or the heater or a/c (308 yellow wires) (if equipped).
Please send the serial number and I will check deeper into the problem.
The fuel pump relay should be near the filter or fuel injection pump. The four grouped together are usually mounted on the left wall beside the engine.
Check all for corrosion or loose connectors. Look for damage to wires and give them a pull to see if the wire might be broken.
I can get pieces of the diagram to you but, the whole schematic is too big to send here. I will cut some sections out to help show the wiring to these components.
I will run your serial number and let you know what I find.
Here is the guide to check the parking brake. It is what I use to find problems.
Troubleshooting 247B, 257B, 267B, 277B and 287B Multi Terrain Loaders and 216B, 226B, 232B, 236B, 242B, 246B, 248B, 252B, 262B and 268B Skid Steer Loaders Interlock Electronic Control System Media Number -RENR6417-01 Publication Date -01/08/2005 Date Updated -03/08/2005 Parking Brake IntermittentSMCS - 4284-038System Operation Description:On some machines the parking brake will engage intermittently during normal operation. This can be caused by several components that are unrelated to each other. Components that can cause this problem are:Park brake switchHarnesses (cab panel, upper and lower platform)Seat / arm bar switchMain power relayPower and ground connections (including battery cables)Interlock ECM (unlikely)Aux Hydraulic ECM is not tied to the park brake solenoid therefore can not cause the park brake to be set
Follow this guide and let me know if it leads you to the problem you are having.
I did find a service letter for your machine. It has expired and I don't see were your machine had this repair done. The dealer may not help much since this letter is two years old.
It replaces the park brake manifold.
Certain skid steer and multi terrain loaders may experience unacceptable service life for the parking brake solenoid valve assembly.
287B ZSA01287-02652, 2700-3895
1 each;(NNN) NNN-NNNNVALVE GP-MTG&
This is a one hour repair according to CAT.
Item #5:(NNN) NNN-NNNNMANIFOLD & SOLENOID GP-CONTROL (PARKING BRAKE)
If the guide doesn't point out the problem the valve may be the whole trouble.