Komatsu PC500LC-10R, Shop Manual, Page: 157 / 758

Pin No. Signal name
Input and out-
put signals
46 GND (analog signal) Input
47 (*1) -
48 (*1) -
49 (*1) -
50 Bucket DUMP PPC oil pressure sensor Input
51 Arm OUT PPC oil pressure sensor Input
52 (*1) -
53 Right travel REVERSE oil pressure sensor Input
54 Service 2 PPC oil pressure switch (*4) Input
55 Blowby pressure sensor Input
56 Wiper motor reverse (W) Input
57 Overload alarm switch Input
58 Model selection 5 Input
59 Model selection 1 Input
60 (*1) -
61 Starting switch C signal Input
62 External starting signal Input
63 NC -
64 CAN (C)_L
Input and out-
put
65 (*1) -
66 (*1) -
67 (*1) -
68 (*1) -
69 Bucket CURL PPC oil pressure sensor Input
70 (*1) -
71 (*1) -
72 Right travel FORWARD PPC oil pressure sensor Input
73 (*1) -
74 Return filter bypass valve stroke sensor Input
75 Wiper motor stop (P) Input
76 Cab front window open limit switch Input
77 Model selection 4 Input
78 PPC lock switch (solenoid side) Input
79 PPC lock switch (starting motor side) Input
80 Starting switch ACC signal Input
81 (*1) -
*1: Never connect these pins, otherwise it may cause malfunctions or failures.
10 STRUCTURE AND FUNCTION COMPONENT PARTS OF CONTROL SYSTEM
PC500LC-10R 10-63