jcb JS300 Service Manual page 471

Harness Connector C154 - J2 (grey)
Pins Details
1 Low side output - high flow auxiliary proportional
solenoids return
2 Not used
3 Digital input - quickhitch switch
4 Not used
5 High side output - merge flow A solenoid
6 High side output - merge flow B solenoid
7 High side output - dual controls solenoids
8 High side output - quickhitch switch status LED
(red)
9 High side output - low flow variable ARV solenoid
10 High side output - high flow variable ARV solenoid
11 Not used
12 High side output - low flow B proportional solenoid
13 Not used
14 Not used
15 Digital input - quickhitch switch
16 Digital input - quickhitch button (RH joystick)
17 Not used
18 Not used
19 Analog input - LH joystick thumbwheel
20 Not used
21 Not used
22 Earth
23 High side output - low flow A solenoid
24 Low side output - low flow variable ARV solenoid
25 Not used
26 Not used
27 Not used
28 Digital input - constant auxiliary button (LH
joystick)
29 Digital input - arm alignment switch
30 Analog input - RH joystick thumbwheel
31 Not used
32 Not used
33 Not used
34 Digital input - boom alignment switch
C-46
Hydraulic Electronic Control Unit (HECU)
35 Digital input - quickhitch pressure switch
9813/5100-1
Section C - Electrics
Electronic Controllers
C-46