Manitowoc Published 11-22-17, Control # 257-02 3-33
MLC300 SERVICE/MAINTENANCE MANUAL ELECTRICAL SYSTEM
Table 3-13. IOLC34 Test Voltages
Pin Net Function Voltages
P1-1 GND Ground (from ground stud on rotating bed)
0 V
DC
P1-2 KL15 Control Module Ignition Power (from engine RUN switch)
0 V
DC
Open, 24 V
DC
Closed
P1-3 ID01 System Circulation Filter Switch
0 V
DC
Open, 24 V
DC
Closed
P1-4 ID02 Hydraulic Vacuum Switch
0 V
DC
Open, 24 V
DC
Closed
P1-5 OPH6A18 Digital Pulse Output (not used)
0 V
DC
P1-6 OPH6A19 Digital Pulse Output (not used)
0 V
DC
P1-7 OPH6A20 Not Used
0 V
DC
P1-8 OPH6A21 Not Used
0 V
DC
P1-9 IMID1 Module Identifier Input (from ground stud on rotating bed)
0 V
DC
P1-10 CAN_C—H CAN Bus C—High N/A
P1-11 8C51 (+UB) Battery Power for Control Module Outputs (from CB51)
24 V
DC
P1-12 8C48 (+UE) Control Module Battery Power (from K5)
24 V
DC
P1-13 ID03 Hydraulic Charge Filter Alarm Switch
0 V
DC
Open, 24 V
DC
Closed
P1-14 ID04 Not Used
0 V
DC
P1-15 ID05 Not Used
0 V
DC
P1-16 ID06 Not Used
0 V
DC
P1-17 IDF15 Digital Frequency Input (not used)
0 V
DC
P1-18 IMID2 Module Identifier Input (from ground stud on rotating bed)
0 V
DC
P1-19 CAN_C—L CAN Bus C—Low N/A
P1-20 8C52 (+UB) Battery Power for Control Module Outputs (from CB52)
24 V
DC
P1-21 ID07 Not Used
0 V
DC
P1-22 ID08 Digital Input (not used)
0 V
DC
P1-23 ID09 Hydraulic Vacuum 2 Switch
0 V
DC
Open, 24 V
DC
Closed
P1-24 ID10 Hydraulic Vacuum 3 Switch
0 V
DC
Open, 24 V
DC
Closed
P1-25 ID11 Hydraulic Vacuum 4 Switch
0 V
DC
Open, 24 V
DC
Closed
P1-26 IDF16 Digital Frequency Input (not used)
0 V
DC
P1-27 IACV17 Engine Fuel Level
0.5 to 4.5 V
DC
P1-28 IMID4 Module Identifier Input (from ground stud on rotating bed)
0 V
DC
P2-1 ID12 Not Used
0 V
DC
P2-2 ID13 Digital Input (not used)
0 V
DC
P2-3 ID14 Digital Input (not used)
0 V
DC
P2-4 IACV18 Cooler Fan PSI 4 to 20 mA
P2-5 ODH3A02
24 V
DC
Power Bus:
• Flow Sensor
• Hydraulic Level Sensor
• Hydraulic Charge Filter Alarm Switch
• Hydraulic Vacuum Switch
24 V
DC
P2-6 ODH3A04 Rear Alarm (warble)
0 V
DC
Off, 24 V
DC
On
P2-7 ODH3A07 Starter Motor Relay
0 V
DC
Off, 24 V
DC
On