jcb JS300 Service Manual page 467

Harness Connector C016 - J2 (grey)
Pins Details
1 Low side output - cooling fan PWM return
2 Digital input - coolant level switch
3 Digital input - boom up pressure switch
4 High side output - travel alarm
5 High side output - MRV boost solenoid
6 High side output - controls enable solenoid
7 High side output - starter relay
8 High side output - warning buzzer, Malfunction
Indicator Light (MIL)
9 High side output - Swing lock solenoid
10 High side output - auxiliary/hammer change over
solenoid
11 High side output - Swing shut solenoid
12 High side output (PWM) - hydraulic pump
proportional solenoid
13 Digital input - engine oil level switch
14 Digital input - swing pilot pressure switch
15 Digital input - one touch idle button
16 Digital input - travel speed mode select button
17 Digital input - auto idle enable/disable button
18 Not used
19 Analog input - refuel pump button
20 Digital input - engine start/stop switch
21 Analog input - hand throttle potentiometer
22 Earth
23 High side output - maximum flow cut solenoid
24 Low side output - controls isolate indicator LED
25 Digital input - controls isolate switch
26 Digital input - travel pilot pressure switch
27 Digital input - boom priority button
28 Digital input - H+ power mode switch
29 Digital input - boost button
30 Input - cab interior light switch
31 Analog input - alternator
32 Digital input - engine stop switch
33 Frequency input - cooling fan speed
34 Digital input - Controls Enable switch
C-42
Machine Electronic Control Unit (MECU)
35 Digital input - boom overload pressure switch
9813/5100-1
Section C - Electrics
Electronic Controllers
C-42