SECTION 4 ELECTRICAL SYSTEM

Group 1 Component Location ----------------------------------------------------------------------------------------- 4-1

Group 2 Electrical Circuit ------------------------------------------------------------------------------------------------- 4-3
Group 3 Electrical Component Specification ----------------------------------------------------------------- 4-22
Group 4 Connectors --------------------------------------------------------------------------------------------------------- 4-31
 SECTION 4 ELECTRICAL SYSTEM
GROUP 1 COMPONENT LOCATION

1. LOCATION 1

17
18 16
19

IR
A
15
1
2
3 14
4

5 13
6
7 12

11

10
9

8
20

300S4EL01A

1 Radio & USB player 8 Power max switch 15 Speaker

2 Accel dial 9 One touch decel switch 16 Air compressor switch
3 Horn switch 10 RS232 service socket 17 Quick clamp switch
4 Breaker operation switch 11 Fuse & relay box 18 Swing fine switch
5 Starting switch 12 Master switch 19 Swing lock switch
6 Cluster 13 Cigar lighter 20 Emergency engine stop
7 Service meter 14 12V socket switch (option)

4-1
 2. LOCATION 2
24 35 36
4
1
5

11 1 19

1
26
BOOM BOOM SAFETY VALVE SOLENOID VALVE CAB

10 25
28

2 34
12
Pi1 a4

13
9 32

8 14
3
28
33
38

37

1 5
6
27
29
7 31
30
22
16 22 21
Ptr
15 PAtt

19 23
20

d e2

g
h2
h1 17

c 1
18
SHUTTLE BLOCK MAIN CONTROL VALVE AIR CLEANER 300S4EL02

1 Lamp 14 Alternator 27 MCU

2 Fuel sender 15 Bucket out pressure sensor 28 Pliot pressure sensor
3 Fuel filler pump 16 Arm out pressure sensor 29 PVG32 controller
4 Beacon lamp 17 Boom up pressure sensor 30 Relay drive unit
5 Battery 18 Swing pressure sensor 31 Around view controller
6 Battery relay 19 Boom down pressure sensor 32 Engine oil pressure switch
7 Horn 20 Arm in pressure sensor 33 Temperature sensor
8 P1 pressure sensor 21 Attach pressure sensor 34 Speed sensor
9 P2 pressure sensor 22 Travel pressure sensor 35 Integrated antenna
10 EPPR pressure sensor 23 Air cleaner sensor 36 Satellite antenna
11 Overload pressure sensor 24 4 cartridge valve 37 Warning buzzer
12 Start relay 25 Pump EPPR valve 38 Travel alarm buzzer
13 Heater relay 26 Boom priority EPPR valve

4-2
 ·ELECTRICAL

9
8
7
6
5
4
3
2
1

9
8
7
6
5
4
3
2
1
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
8
7
6
5
4
3
2

8
7
6
5
4
3
2
1

9
1

9
8
7
6
5
4
3
2
1
12
11
10

16
15
14
13
12
11
10
NO.

10
NC
NC
NC
NC
NC
NC
NC

NC

NC

NC

NC
NC
NC
NC
GND

NC
NC
GND

GND

GND
INT. SIG

LH CONSOL
CAN_SH
CAN1_HI
CAN2_HI
CAN1_LO
AC 24V

CAN2_LO

CAM0 LIN
CAM GND
AC GND

CAM0 GND
AIR-CON

CAM DIFF L
CAM DIFF H

SW_HORN
CABIN_GND
CABIN_GND

CONT._GND
AC COMP

P-RCV_SIG
WASHER P/P
CAM POWER

P-RCV_SIG
AIR COMP RY

P-RCV_GND
WASHER SIG.

ILLUMINATION

SAFETY SOL
CAM0 POWER

AIR COMP RY

P-RCV_GND
ILLUMINATION
START KEY_IG

BEACON LAMP

MCU_DECEL
ILLUMINATION

BREAKER SW
BREAKER SW
CLUSTER_GND

START KEY_BR
START KEY 24V

CABIN LAMP RY
CABIN LAMP RY
BLOWER SIG.

CIGARLIGHT 24V

CAM0 LVDS POS

MCU_SIG.GND
CAM0 LVDS NEG

MCU_SIG.GND
ROOM LAMP 24V
ENG. START SIG.
SWITCH_POWER

SWING FINE SW
ILLUMINATION

CLUSTER_IG 24V
REVERSE FAN

SWITCH POWER

ACCEL DIAL GND

HOUR METER SIG

SWING LOCK SW
CIGARLIGHT_GND

EM'CY STOP SW
EM'CY STOP SW

SWITCH POWER
SW_2PCS&DOZER
DESTINATION

CLUSTER_BATT.24V

AIR SHEAT POWER

WIPER MOTOR_GND
CASSETTE RADIO IG

P-RCV_POWER(5V)

MCU_POWER MAX
ACCEL DIAL SIGNAL

P-RCV_POEWR(5V)
WIPER MOTOR IG24V

ACCEL DIAL SUPPLY

Q/COUPLING SWITCH
Q/COUPLING SWITCH
AC CONTROLLER B+

SWITCH_Q/COUPLER
SWITCH_Q/COUPLER
AC CONDENSOR FAN

WIPER MOTOR BATT24V

DC/DC CONVERTER_24V

SW_AUTO GREESE LAMP

DC/DC CONVERTER_GND
WIPER MOTOR DRIVE SIG

1
2
SW_AUTO GREESE RESET

2
1

2
1

CN-263
CN-68
ELECTRICAL CIRCUIT (1/2)

CN-140
SAFETY SOL

AIR COMP RY
12
11
10
9
8
7
6
5
4
3
1
2

10
9
8
7
6

16
15
14
13
12
11
10
5
4
3
1
2

9
8
7
5
4
1

6
3

QUICK COUPLER
0.75Br 7
CN-7

0.75L 38
0.75Y 37
CN-6

CN-4
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10

1.0 V 183

0.75Y 260
2

5
4
1

9
8
7
6
3

1.0 G 66A
8
7
6
5
4
3
1
2

CN-5
CN-11
- MACHINE SERIAL NO. : -#01373

1.0 B 55
1.5 B 46

1.0 Gr 53
1.0 Or 47

1.0 YR 50

0.75W 52

1.0 G 66
1.5 B 46A
1.0 VW 48

0.75Y 62
0.75W 60
0.75BY 67

0.75W 60
0.75W 179

0.75LOr 61

1.0Or 47A
0.75GrR 59

0.75BW 56

0.75L 63F
0.75B 63F
0.75GrR 59

0.75B 63E

0.75Y 260
1.0 GW 43A

0.75GrW 58

0.75B G41
0.75GrW 64
0.75B 9

0.75OR 139A
1.0 B 33
2.0 B 24
1.5 B 23
1.0 B 20
1.0 B 19
1.0 V 17
1.0 R 16
1.0 R 11

1.0 G 30
1.5 Dr 22

1.5 Gr 45

0.75L 38
0.75L 15

0.75Y 42
0.75Y 37
2.0 W 28
1.0 RL 21

1.0 YBr 29
1.0 BR 27
1.0 RY 14

0.75YL 35
0.75W 12

1.0 ROr 25

1.0 B 24B
1.0 B 24A
2.0 VW 26
1.0 B 23A

1.0 BrW 34
0.75L 155
0.75YBr 18
0.75RB 10

1.0 GW 43
0.75L(sh) 8

0.75B 157
0.75Y 156
0.75GR 13

0.75Y 260

0.75R 153
0.75Br 152
0.75R 178
0.75Y(sh) 7
0.75V(sh) 6

0.75BW 54
0.75G(sh) 5

0.75BL 154
GROUP 2 ELECTRICAL CIRCUIT

0.75RY 151

1.0 VW 26A

1.0 GW 43B
2.0 L 148
0.75LY 91

1.0 G 150

1.0 GW 43
2.0 B G17

2.0 RW 147

IG 24V

RS232 P_DUMP
CAN2_Hi

RS232_TX
RS232_RX
CAN_Hi
CAN2_Lo

CAN_Lo

Service Tool
GND
J

B
E

A
H

D
C
G

0.8G 2
0.8R 3
0.8B 4
0.8V 5
0.8G 6
0.8G 6
0.8G 6
0.8G 6

0.8BW 1
1
2
3
4
5
6
7
8
9
10
CN-126
>

>
>
>
>
1/2 006

1/2 009
1/2 010
1/2 008
1/2 007

1.0 V 69

0.75B 71
0.75R 70
0.75G 68
0.75L(sh) 8
0.75Y(sh) 7

0.75BW 72
0.75G(sh) 6
0.75G(sh) 5
CR-7
148 2.0 L
30
AC

148B 1.0 L 87a 87 85

86
145 2.0 V
87
149 1.0 Br
85
COMP RY

87a 30 86

CN-29
CN-376 149 1.0 Br
0.75L 77 2 Pa
IG 24V 1 150 1.0 G
1
TRVEL ALARM 2
R/DRYER

0.75GR 13
WIPER 3
0.75WY 74
WORK LIGHT 4 CN-22
0.75RW 76 14 1.0 RY
CABIN LIGHT 5 2 M
17 1.0 V
NC 6 1
OVERLOAD SW 7
NC 8 14A 1.0 RY
DO-5
WASHER P/P

NC 9 2
0.75V(sh) 5A 17A 1.0 V
CAN_HI(2) 10 1
0.75L 15
WASHER 11
0.75YBr 18
INT WIPER 12
0.75YBr 75
HEAD LIGHT 13
NC 14
0.75RW 78
BEACO LAMP SW 15
NC 16
NC 17

MEMBRANE CONT.
0.75G(sh) 5A
CAN_LO(2) 18
NC 19

0.75B G12
GND 26
0.75B G13
GND 27
0.75B G11
NC 34
CD-10
1.0 B 63B
Pa 1.0 YBr 83
CR-36
78 0.75RW
1
CD-2 47A 1.0 Or 4 5 1
1.0 B 63C 2
1 47B 1.0 Or
1.0 YW 100 3
2

LEVEL
4
34 1.0 BrW 3 2
CD-1 5
1.0 B 63D
1
1.0 LOr 101
2

AIR CLEANER SW FUEL HYD TEMP

CN-76 28 2.0 W
1
0.75G 79 167 2.0 W
M- 6 2
CS-74

6 5 0.75V 82
M M+ 5
CS-74B
BEACON LAMP MASTER SW

NC 4
2 1.0 B 55A
P- 3
3 1 0.75WY 84
SIG 2
0.75Gr 53A

GOV. MOTOR
P+ 1
CR-9
170 2.0 R
1.0 B 63 30
170A 0.75R 87a 87 85
86
26 2.0 VW
87
CN-51 76 0.75RW
85
1.5 RY 88 30 86
BATT POWER_24V 1 87a
1.0 V 69
CABIN LAMP

KEY IG 24V 2
1.0 ROr 89
SENSOR 24V 3
1.0 Y 168
ENG. SPEED INPUT+ 4 CN-249
1.0 B 55 152 0.75Br
GND(5V) 5 1 LVDS NEG
1.0 Gr 53 54 0.75BW
POWER_5V OUT 6 2 GND
0.75V 82 151 0.75RY
GOV MOTOR+ 7 3 LVDS POS
0.75G 79 178 0.75R
GOV MOTOR- 8 4 POWER 6.5V
STRAIGHT TRAVEL SOLENOID 9
0.75WY 90
ARM IN OILOT PRESSURE 10
1.0 B 63A
GND_MAIN 11
1.0 B 20A
REAR VIEW CAMERA

> 1/2 003

> 1/2 002

CAN_SHIELD 12
0.75BW 81
GROUND (SENSOR) 13 CR-35
FAN SPEED INPUT+ 176 3.0 R
14 30
1.0 L 169 30 1.0 G 87a 87 85
PULSE INPUT- 15 86
0.75BW 72 165 3.0 RW
PROGRAM DUMP 16 87
0.75GrW 64 G18 1.0 B
POWER

ONE TOUCH DECEL SIG 17 85

0.75Y 62 30 86
POWER BOOST SW 18 87a
0.75YL 35
HOUR METER 19
1.0 GrR 127
ANTI RESTART RY 20
0.75L(sh) 8A
CAN #1 Hi 21
0.75V(sh) 6B
CAN #2 Hi 22 CN-36
4.0 R 164A

RS485 TX 23
0.75R 70 176 3.0 R IG POWER 30A
RS232 #1 TX 24 3
88 1.5 RY MCU 30A
RS232 #2 TX 25 4
0.75YR 50A 42 0.75Y ROOM LAMP/CASSETTE 10A
FINE SWING SELECTION SW 26 5
167 2.0 W 30A
6.0 R 164B

0.75YW 166 START KEY

ENG. OIL PS 27 6
147 2.0 RW AIR CON/HEATER 20A
COOLANT WATER LEVEL 28 7
1.0 YBr 83 16 1.0 R WIPER MOTOR 10A
AIR CLEANER CLOGGING SW 29 8
0.75LY 91 11 1.0 R CLUSTER 10A
A/C BLOWER STATE 30 9
0.75Y(sh) 7A 175 1.0 Br FUEL CUT OFF SOL 10A
6.0 R 164C

CAN #1 Lo 31 10
0.75G(sh) 5B 10 0.75RB CLUSTER 10A
CAN #2 Lo 32 11
2.0 RW 165A

69A 1.0 V MCU CONT. 20A

RS485 RX 33 12
0.75G 68 97 1.0 Y MCU_EPPR 20A
RS232 #1 RX 34 13
77 0.75L SWITCH PANEL 10A
RS232 #2 RX 35 14
0.75G 66B 12 0.75W CASSETTE 10A
2.0 RW 165B

SAFETY LEVER S/W 36 15

0.75OrW 92 146 1.0 Or PVG CONT. 10A
ARM OUT PILOT PRESSURE 37 16
135 2.0 Y START. STOP 30A
OPTION PILOT PRESSURE SW 38 17
1.0 L 93 143 2.0 RW WORK LAMP 30A
N1 PRESSURE 39 18
1.0 Gr 94 170 2.0 R CABIN LAMP(OPTION) 30A
6.0 W 163A

N2 PRESSURE 40 19
14B 1.0 RY WIPER 10A
20

>
>
144 2.0 Br WORK LAMP 20A

MCU
CN-52 21
180 2.0 L FUEL HEATER 30A
ARM REGEN SOL 1 22

4-3
1.0 P 95 138 2.0 Y START,AIR HEAT 20A

1/2 004
1/2 005
POWER BOOST SOL 2 23
1.0 B 108 141 1.0 V HORN 10A
TAVEL SPEED SOL 3 24
6.0 W 163B

0.75Br 158 148A 2.0 L AC& HEATER 20A

ATT. SAFETY SOL 4 25
0.75LOr 120 183 1.0 V SAFETY SOL 10A
ATT. PRESSURE SOL 5 26
0.75GW 177 48 1.0 VW SEAT 20A
ATT. CONFLUX SOL 6 27
0.75RG 96 25 1.0 ROr SWITCH 20A
BOOM PRIORITY EPPR(+) 7 28
1.0 Y 97 45 1.5 Gr CIGAR 10A
EPPR POWER 24V 8 29
6.0 W 163C

1.0 RW 98 47 1.0 Or OPTION,SWITCH 20A

PUMP SHIFT EPPR+ 9 30
0.75Br 99 173A 1.0 Or SOLENOID 15A
ATT. FLOW EPPR1(+) 10 31
22 1.5 Or CONVERTER 10A
NC 11 32
0.75L 102 182 2.0 Y FUEL P/P 20A
FUEL WARMER RELAY 12 33
0.75BrB 103 > 184 1.0 RW AAVM / SIREN 10A
TRAVEL BUZZER 13 1/2 001 34
139 1.0 Or BREAKER 10A
ENGINE STOP RELAY 14 35
6.0 W 163D

0.75BR 109
PREHEAT RELAY 15
0.75Y 104
ATT. FLOW EPPR2(-) 16
0.75VW 105
FUSE BOX

BOOM PIORITY EPPR(-) 17

0.75B 106 CR-46
GROUND(EPPR) 18 180 2.0 L
1.0 V 107 30
PUMP SHIFT EPPR- 19 180A 0.75L 87a 87 85
0.75BW 130 86
ATT. FLOW EPPR1(-) 20 181 2.0 Br
87
COOLING FAN EPPR(+) 21 102 0.75L
85
COOLING FAN EPPR(-) 22 30 86
0.75W 179 87a
FUEL HEATER

ACCEL DIAL SIG. 23

1.0 LOr 101
HYD. OIL TEMP SENDOR 24
0.75W 131 CN-96
ENG. COOLANT TEMP 25 2Br
1.0 YW 100 133
FUEL LEVEL SENDOR 26 1
0.75W 110 G31 2B
ALT VOLTAGE 27 2
0.75WY 84 3
GOV. MOTOR POTENTIONMETER 28
0.75G 111
P1 PRESSURE SENSOR 29 4
0.75OrW 112
FUEL HEATER

P2 PRESSURE SENSOR 30
0.75R 113 CN-61
BUCKET OUT PILOT PRESSURE 31 G20 2.0 B
0.75WR 114 1 M
PUMP EPPR 2ND PRESSURE SENSOR 32 182 2.0 Y
0.75V 115 2
ATT. PILOT PRESSURE 33
0.75BR 132
BOOM DOWN PILOT PRESSURE 34
0.75LgR 117
FUEL PUMP

BOOM UP PILOT PRESSURE 35

0.75LgW 118
SWING PILOT PRESSURE 36
0.75LgY 119
WORKING PILOT PRESSURE 37
0.75LW 133
TRAVEL PILOT PRESSURE 38
0.75LG 121
OVERLOAD PRESSURE 39
0.75GrW 122
ATT. FLOW EPPR2(+) 40

CD-6 1.0 ROr 89A

SUPPLY A
0.75LW 133
SIG B
0.75BW 81A
RETURN C

TRAVEL
CD-7 1.0 ROr 89B
SUPPLY A
0.75LgY 119
SIG B
0.75BW 81B CN-258
RETURN C

WORK
4.0 W 163E
1
CD-24 1.0 ROr 89C
SUPPLY A AIR COPM POWER
0.75LgW 118
SIG B
0.75BW 81C
RETURN C
SWING

CD-31 1.0 ROr 89D

1.0 G 66

SUPPLY A
0.75BY 67
0.75LOr 61
1.0 Or 146
1.0 B G15

0.75LG 121
0.75W 60A
1.0 B G15A
0.75GrR 59A
0.75V(sh) 6C
0.75G(sh) 5C

SIG B
0.75BW 81D
LOAD
OVER

RETURN C
CD-32 1.0 ROr 89E
SUPPLY A
5
3
4
1

9
8
7
6
2

12
11
10

0.75LgR 117
CN-3

SIG B
UP

0.75BW 81E
RETURN C
BOOM

0.8Y 206
CD-90 ERROR 4
1.0 ROr 89F 0.8B G47
SUPPLY A GND 3
0.8G 210
0.75WY 90 SIGNAL VOLT(Udc) 2
IN

SIG B 0.8G 209

(PVG 32)

0.75BW 81F SIGNAL VOLT(Us) 1

ARM
P/P VALVE

RETURN C
CN-307
80A

40A

CN-81 2 0.8B G46

2 0.75ROr 25B
1 0.8G 208
FUSE

1 0.75BrB 103
CN-310
1
2

1
2

CN-133 2 0.8B G45

0.75VW 105
CN-60
CN-95

1
1.0 B G16

0.8L 207
1.0 YBr 29B

1
0.75RG 96
BOOM
1.0 L 169
1.0 L 137

1.0 Y 168

2
1.0 L 93
1.0 YBr 29A

EPPR V/V-A2 EPPR V/V-A1

1.0 Gr 94

0.75B 63G
0.75W 131
0.75W 110
1.0 B G16A

1.0 V 107
2.0 V 145

1.0 B G14A
1.0 ROr 89
1.0 Br 175

2.0 W 134A
1.0 RW 98

2.0 B G14
2.0 W 134

0.75BW 81
0.75G 111

CN-309
0.75YW 166

0.75WR 114

0.75OrW 112

CN-70 0.8Or 18E

6.0 R 160

Power ground(+)
6.0 W 162
6.0 W 163

12
6.0 W 161

1.0 B 108 0.8Or 18D

1 Power supply(+) 11
G7 2.0 B

1.0 ROr 25A

1
2

0.8G 210
TRAVEL BZ PRIORITY HIGH
3
2

9
8
7
6
5
4

2
1

12
11
10
2

PVGOUT(SIGNAL)
5
4
1

9
8
7
6
3

10
15
14
13
12
11
10

CN-2
CR-1

0.8Br 209
CN-1

PVGOUT(POWER) 9
DO-3
BATT RY

CN-88
1L
1Y

1.0 P 95 N/A 8
1.2L
1.2B

1.2G
2B

1
2W
1.2Gr

1.2BW
1.2LOr

N/A 7
1.2G

1.0 ROr 25C

1.0Br

1.2WOr
1.2VW

MAX
1.2GrW

1.2BW
1.0RW
1.2LOr

2 0.8G 208
1.2ROr
1.2OrW

EPPR2 SOL 6
ENG.HARNESS REAR

15
14
13
12
11
10

9
8

0.8L 207
EPPR1 SOL 5
1

4
5
3
2

7
6

CN-242 0.75BW 130

19
18
27
17

28

1 RELEASE SOL 4
0.75Br 99 N/A 3
TRAVEL POWER ATT.

2
N/A 2
0.8Y 206
PVG ERROR SIG 1
6.0 R 164

CN-242A 0.75Y 104

6.0 W 161

CONNECTOR 2(C2_BLACK)

1
60R

0.75GrW 122
2.0 Br 144

CN-306
0.75YBr 75
PROPORTIONAL VALVE & LEVER

ATT.
G9 1.0 B
G8 1.0 B
2.0 Br 144A

2
1.0 GW 43B

G10 1.0 B

FLOW FLOW

0.8V 134A
43E 1.0 GW
43D 1.0 GW
43C 1.0 GW

SAFETY SIGNAL 12
EPPR 1 EPPR 2

0.8L 205
2
1

CN-370 CN-14 RIGHT JOY. SIG 11

1.2BrW 119 1.0 YR 50 0.8LOr 204
CS-74A

1 1 LEFT JOY. SIG 10

1
2

1
2

1
2

1.0 Or 173
87

203
85
86

0.8B
30

0.8AA
FINE
87a

2 2 Sensor power GND- 9

CL-4
12V X 2

CL-3

0.75W 52 0.8Gr 202

CL-24

3 5Vdc sensor power+ 8

CR-13

1.0 B G2
BATTERY

CS-74
TO:STARTER "B" TERM.

CN-419 0.8Gr 4 N/A 7

119
1 N/A 6
30 86
87a 87 85

HEAD LAMP

47
HEAD LAMP

0.8Gr
HEAD LAMP

CONT SOL A1
60B

2 CAN Shield 5
0.8LW 72A
MASTER SW

CAN(-) 4
CN-420 0.8YW 71A
1.0 L 137

CAN(+)
1.0 Y 138

0.8Gr 119 3
HEAD LAMP REAR

0.75BR 109

1 18C
1.75Y 138A

0.8Or
Power supply(+) 2
A2
135 2.0 Y

0.8Gr 47
134 2.0 W
27 1.0 BR

2 0.8B G44
127 1.0 GrR
CONNECTOR 1(C1_GREY)

Power ground(-) 1
CN-421 1.2BrW 119
CN-305
3
4
10

5
1
11

1
47 0.8B 201
A3

0.8Gr
87
85
86
30

C C
CR-36

2
87a
CR-5

0.8LW 72B
SWING SWING SWING SWING

B B
1.2B

0.8YW 71B
1.2LOr

CD-69 CN-15 A A
3 2
4 5 1

0.8ROr 1 1.0 ROr 89G

AIR-HEAT

SUPPLY A 1 CN-307
30 86
87a 87 85
13

0.8BW 2 0.75V 115

1
2

SIG B 2
SERVICE TOOL

0.8BW 3 0.75BW 81G

0.75WY 74
2.0 RY 142
2.0 RW 143

RETURN C 3
1.2L

0.75RW 143A
RS-1A
RS-1B

2.0 B G6

CN-236 4
2.0 RY 142

0.8LOr 4 0.75LOr 120

1 5
15

ANTI-
START RY

0.8Or 1.0 Or 173

CR-23

5
5W/100
5W/100

2 6
87
85
86
30

6 0.75GW 177
87a
2
2

1
1

7
RESTART

CN-149
1.2G

CR-4

0.8Br 7 0.75Br 158

2
1
14 1.2BW

1 8
0.8Or
CN-12

G3 1.0 B

ATT. ATT.
1.2B
1.2B

2 9
CR-24

SOL.
2
1

30 86
1.2WOr
1.2WOr

87a 87 85

CN-237 10
CD-8

4 1.0 B G32
PRE-HEAT RY

WORK LAMP

0.8GW 11
FROM BATT.RY

1 5
0.8Or 1.0 Br 136
15R

2 12
25
12A

WATER TEMP SENDOR

9
8
15R

PARKING PARKING PARKING ATT. PS PRESS SAFETY CONFLUX

1A
M

0.75B 56
1.0 V 141
2A

1.0 G 140

CN-66
3

1.0 Br 136
1.0 B G5
B+

1.0 Or 139
0.75GrW 58

1.0 B G4
1.0 V 141A

0.8B
1.0 G 140

0.75Br 158A
19A
18A

1.0 G 140A

1
V
B
1E V
2E B
12

0.8Br
1
1

CN-45

1.0L
1.0Y

2
M

1
2
1
2

3
4
2

5
1
1.2Gr

3
2
1

4
2

5
1
2
1.2BW

2A 1.2ROr

2
1
1.2L
2A 1.2ROr
1.2ROr

2
CL-6

1
1.2L

15 R
STARTER
4A 1.2BW

CL-5
4A 1.2BW

1.2WOr

CR-2

ATT. BREAKER SOL.

CR-62
rp

CN-20
CN-25
CD-17
m
1

7
6

CN-80

CD-36
27
28

4
3
2
1
B
B

1.0 ROr 89H

SUPPLY A
BREAKER
3 2
4 5 1

3 2
4 5 1
WORK LAMP
L

TACHO SENSOR
FI
P

0.75OrW 92
1.2VW

PRE-HEATER
CD-71

B+
CD-70
CD-44
4

NC

SIG B
B SIG

5 1.2LW
2B

0.75BW 81H
1.0Br
2W

1.0RW

RETURN C
1
SIG
SIG

A SUPPLY
A SUPPLY
A SUPPLY

ALTERNATOR
C RETURN

3~
CN-74
C RETURN
C RETURN

HORN
1.2GrW

HORN
F

CD-87
H
G
18 1.2ROr
18B 1.2ROr

1
2
17 1.2OrW

1.2G

1.0 ROr 89J

19 1.2BW
19B 1.2BW

SUPPLY A
A4

CN-28

CN-79

0.75R 113
SIG B
CN-75

OUT
AC COMP

0.75BW 81J
N1(Pi1)

N2(Pi2)
PRESS

PRESS
B
B

FUEL CUT OFF SOL

RETURN C
ARM OUT BUCKET
Pa
CD-18
CD-42
CD-43

CD-85 1.0 ROr 89K

ENG OIL PS

SUPPLY A
SIG
SIG

0.75BR 132
A SUPPLY
A SUPPLY

C RETURN
C RETURN

SIG B
0.75BW 81K
BOOM
DOWN
EPPR V/V

RETURN C
P1
P2

PRESS
PRESS

20K6-95200-01
- MACHINE SERIAL NO. : #01374-
AC
COMP RY
R/DRYER 6.0 R 164B 6.0 R 164
WASHER P/P 1

87a 87 85

30 86
BEACON LAMP

CS-74
REAR VIEW CAMERA 4.0 R 164A 6.0 R 164C 6.0 W 161
MASTER SW CABIN LAMP 2

Pa
6.0 W 163A 6.0 W 163B 6.0 W 163C 6.0 W 163D
POWER

M
2.0 RW 165A 2.0 RW 165B
CS-74A

CN-22
CN-29
FUSE BOX

2
DO-5

POWER 6.5V
CR-7
80A

87a 87 85
CN-95

30 86
87a

LVDS POS
2
1

LVDS NEG
30

87a 87 85
86

85

1
87

30 86
3
2
1
6.0 W 163 MASTER SW

11
10

12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
4
5
6
7
8
9
3
2

AIR COPM POWER

4

4.0 W 163E
6.0 W 162

CR-36

GND

10A
30A
20A
10A
10A

10A
20A
20A
10A
10A
10A
30A
30A
30A
10A
20A
30A
20A
10A
20A
10A
20A
20A
10A
20A
15A
10A
20A
10A
30A
10A

10A
30A
1
CS-74

CR-9

CR-35
CN-249
1

5
2

4
3

87a
FUSE

30
86

85
87

87a
30
86

85
87
14A 1.0 RY
14 1.0 RY

ROOM LAMP/CASSETTE
6.0 W 161

17A 1.0 V
149 1.0 Br

17 1.0 V

4
3
150 1.0 G

2
2

1
149 1.0 Br
148B 1.0 L

CABIN LAMP(OPTION)
145 2.0 V
148 2.0 L

CS-74B
6.0 R 160 BATTERY

FUEL CUT OFF SOL

CN-258
CN-5A 1

AIR CON/HEATER
78 0.75RW

START,AIR HEAT
34 1.0 BrW

OPTION,SWITCH
2.0 B G17

47A 1.0 Or
47B 1.0 Or

1
2

1
WIPER MOTOR

SWITCH PANEL
5A-33 CN-60
40A

76 0.75RW

FUEL HEATER

AAVM / SIREN
START. STOP
60B

170A 0.75R
60R

26 2.0 VW

AC& HEATER
165 3.0 RW

CONVERTER
SAFETY SOL
WORK LAMP

WORK LAMP
170 2.0 R

SOLENOIDE
START KEY

MCU CONT.
G18 1.0 B

MCU_EPPR

PVG CONT.
176 3.0 R

IG POWER
54 0.75BW
151 0.75RY

CASSETTE
30 1.0 G

CLUSTER

BREAKER
178 0.75R

CLUSTER
2.0 L 148

152 0.75Br

FUEL P/P
5A-32

SWITCH
WIPER
CN-36

CIGAR
HORN

SEAT
MCU
CR-1

167 2.0 W
12V X 2

28 2.0 W
2.0 RW 147
5A-34 1.0 B G16
1.0 G 150
5A-35 1.0 YBr 29B
FUEL PUMP TO:STARTER "B" TERM.
FUEL HEATER
1.0 GW 43

173A 1.0 Or
FUEL HEATER

147 2.0 RW

143 2.0 RW

184 1.0 RW
25 1.0 ROr
14B 1.0 RY
10 0.75RB

48 1.0 VW
5A-37

146 1.0 Or

148A 2.0 L
88 1.5 RY

11 1.0 R
175 1.0 Br

139 1.0 Or
144 2.0 Br
167 2.0 W

12 0.75W

183 1.0 V

M
45 1.5 Gr
47 1.0 Or

22 1.5 Or
69A 1.0 V
BATT RY

176 3.0 R

170 2.0 R
42 0.75Y

135 2.0 Y

138 2.0 Y
141 1.0 V

182 2.0 Y
77 0.75L

180 2.0 L
16 1.0 R

97 1.0 Y

87a 87 85

30 86
DO-3

CN-96

CN-61
1.0 YBr 29A
2

4
1
2
3
CR-46
1.0 B G16A
1

1
2
87a
30
86

85
87

2Br
2B
CN-5
1 NC 1

G31

G20 2.0 B
181

182 2.0 Y
180A 0.75L
181 2.0 Br
2 NC 2

102 0.75L
180 2.0 L
3 NC 3
4 NC 4
0.75G(sh) 5
5 CAN2_LO 5 CN-3 CN-307
0.75V(sh) 6 0.75V(sh) 6C 0.75YW 0.75YW
6 CAN2_HI 6 1 A A
0.75Y(sh) 7 0.75G(sh) 5C 0.75LW 0.75LW
7 CAN1_LO 7 2 B B
0.75L(sh) 8 1.0 B G15 0.75B 0.75B
8 CAN1_HI 8 3 C C
0.75B 9 1.0 G 66 0.75V
9 CLUSTER_GND 9 4 SERVICE TOOL
0.75RB 10 1.0 Or 146 1.0R
10 CLUSTER_IG 24V 10 5
1.0 R 11 1.0 B G15A 1.0B
11 CLUSTER_BATT.24V 11 6
0.75R 178 0.75GrR 59A 0.75Gr
12 CAM POWER 12 7
0.75BW 54 0.75W 60A 0.75B
13 CAM GND 13 8 CD-43
0.75W 12 0.75LOr 61 0.75LOr 18B 1.2ROr
14 CASSETTE RADIO IG 14 9 A SUPPLY
0.75GR 13 0.75BY 67 0.75L 17 1.2OrW
15 WIPER MOTOR DRIVE SIG 15 10 B SIG P2
1.0 RY 14 19B 1.2BW PRESS
16 WIPER MOTOR IG24V 16 11 C RETURN
0.75L 15
17 WASHER SIG. 17 12 CD-42
1.0 R 16 18 1.2ROr
18 WIPER MOTOR BATT24V 18 A SUPPLY
1.0 V 17 4 1.2G
19 WASHER P/P 19 B SIG P1
0.75YBr 18 19 1.2BW PRESS
20 INT. SIG 20 C RETURN
1.0 B 19
21 WIPER MOTOR_GND 21
0.75RY 151

134A
1/2 002 CD-44

204

202
205

203
207

G44
208
18D

209

18C
18E
22

210
CAM DIFF H 22

0.75YW 71A
72A
0.75Br 152 18A 1.2ROr
23 CAM DIFF L 23 1/2 003 3 1.2Gr
A SUPPLY
1.0 RL 21

0.75LOr

0.75LW
B SIG A4

0.75Or
0.75Or

0.75Gr
G47
24 Q/COUPLING SWITCH

0.75Br
24

0.75G
0.75G

0.75V
0.75L

0.75B
0.75L
1.2BW

1.0R
19A

1.0B
1.0 B 20
25 CAN_SH 25 C RETURN
1.5 Dr 22
26 DC/DC CONVERTER_24V 26

CN-305
CN-306
0.75Y 260

1.0B
27 Q/COUPLING SWITCH 27 CD-70

5
4

1
6

5
4

1
9

2
9

3
2A 1.2ROr

12
11
10

12
11
10
1.5 B 23 A SUPPLY
28 DC/DC CONVERTER_GND 28

G45
G46

207
208
2.0 B 24 1 1.2L

PWMOUT/DOUT/PVGOUT
PWMOUT/DOUT/PVGOUT
29 CABIN_GND 29 B SIG N1(Pi1)
4A 1.2BW
1.0 ROr 25 C RETURN PRESS

PWMOUT/ROTATE R
30 SWITCH_POWER

PWMOUT/ROTATE L
30

0.75G
0.75B
0.75G
0.75B

5Vdc sensor power+

Sensor power GND-
1.0 B 23A
31 GND 31 CD-71

G47A

SAFETY SIGNAL
RIGHT JOY. SIG
Power ground(+)

Power ground(-)
Power supply(+)
Power supply(+)
G47
2A 1.2ROr

DIN/AIN/FreqIN
209

DIN/AIN/FreqIN
210

LEFT JOY. SIG

32 NC 32 A SUPPLY

CN-309
CN-310

EPPR2 SOL
EPPR1 SOL
1 1.2L N2(Pi2)

CAN Shield
B SIG

1
33 NC

2
33

2
0.75Br
0.75G
2.0 VW 26 4A 1.2BW PRESS

CAN(+)
CAN(-)
0.75B

0.75B
34 CABIN LAMP RY 34 C RETURN
1.0 BR 27

N/A
N/A

N/A
N/A
35 ENG. START SIG. 35
2.0 W 28 CD-18

CN-238
CN-239
36 START KEY 24V 36
CONNECTOR 1(C1_GREY)

1
CONNECTOR 2(C2_BLACK)

2
1
2
1.0 B 24A EPPR A1 EPPR A2 1 1.2GrW
37 CABIN_GND 37 Pa
1.0 VW 26A
38 CABIN LAMP RY 38
1.0 YBr 29 PROPORTIONAL VALVE & LEVER
39 START KEY_BR 39
1.0 G 30 B A ENG OIL PS
40 START KEY_IG 40
41
1.0 GW 43B (ROTATE "R") (ROTATE "L") CN-28
ILLUMINATION 41
1.5 Gr 45 2 1.2VW
42 CIGARLIGHT 24V 42 2 1
1.0 B 24B
43 CIGARLIGHT_GND 43 1
1.0 B 33
44 CONT._GND 44
0.75R 153 CN-1 AC COMP
45 CAM0 POWER 45 1/2 006 0.75YW 166 1.2GrW 1
0.75BL 154 1
46 CAM0 LIN 46 1/2 007
0.75L 155 2 CN-79
47 CAM0 LVDS POS 47 1/2 008 2.0 V 145 1.2VW 2 28 1.5B
0.75Y 156 3 C GROUND
48 CAM0 LVDS NEG 48 1/2 009 0.75WR 114 1.2Gr 3 27 1.5W
0.75B 157 4 B PULL
49 CAM0 GND 49 1/2 010 1.0 LY 185 1.2R 5 5 1.5R
1.0 BrW 34 5 A HOLD
50 BEACON LAMP 50 0.75G 111 1.5G 4
0.75YL 35 6 FUEL CUT OFF SOL
51 HOUR METER SIG 51 0.75OrW 112 1.2OrW 17
7
52 NC 52 2.0 W 134 1.5W 27
0.75Y 37 8 CN-75
53 AIR COMP RY 53 1.0 RW 98 1.0RW 6 6 1.0RW
0.75L 38 9 2
54 AIR COMP RY 54 1.0 V 107 1.0Br 7 7 1.0Br EPPR V/V
10 1
55 SW_AUTO GREESE LAMP 55 1.0 L 93
11
56 SW_AUTO GREESE RESET 56 1.0 Gr 94
12
57 NC 57 1.0 ROr 89 1.2ROr 18
13
58 NC 58 2.0 B G14 2B 28
0.75Y 42 14
59 ROOM LAMP 24V 59 0.75BW 81 1.2BW 19
1.0 GW 43 15
60 ILLUMINATION 60
ENG.HARNESS REAR

CR-23 CN-45
CN-2
1.0 B G14A 1.2B 10 10 1.2B 1 M
1 M
2.0 W 134A 1.2LOr 11 11 1.2LOr 2
2
0.75W 110 1.2WOr 12
3
1.0 L 137 1.2L 13 B+
4 START RY
0.75B 63G 1.2BW 14
FROM BATT.RY
5 STARTER
0.75W 131 1.2G 15 1.2B
6 2
1.0 Y 168 1Y 8 RS-1B 1
1.2WOr
7
1.0 L 169 1L 9 15 R CN-74
8 25
1.2B
9 2 B+
RS-1A 1.2WOr 12A
10 1 G
1 P
CN-7 12 1.2WOr 3~

1/2 001
11
1.0 GW 43A 2 L
1 ILLUMINATION 1 12 U
3 FI
2 NC 2
1.5 B 46 4 NC
3 GND 3 CR-24
1.0 Or 47 15R ALT.
4 SWITCH POWER 4 CR-13 13 1.2L
1.0 VW 48 2.0 Br 144A
5 AIR SHEAT POWER 5 30
2.0 Br 144 87a 87 85 15R
6 SW_2PCS&DOZER 6 86
1.0 YR 50 1.0 GW 43B
7 SWING FINE SW 7 87
1.5 B 46A 0.75YBr 75 PRE-HEAT RY Pre-heater
8 GND 8 85
0.75W 52 30 86
9 SWING LOCK SW 9 87a CD-8
1.0 Gr 53 14 1.2BW
10 ACCEL DIAL SUPPLY 10 HEAD LAMP 1 ˚C
15 1.2G
11 ACCEL DIAL SIGNAL 11
0.75W 179 CL-4 2
G7 2.0 B G8 1.0 B
1.0 B 55 1
12 ACCEL DIAL GND 12 43C 1.0 GW WATER TEMP SENDOR
2
CD-17
HEAD LAMP 8 1.0Y
2 m
1.0L rp
CL-24 9
1
G9 1.0 B
1
43D 1.0 GW TACHO SENSOR
2

CN-6 HEAD LAMP REAR

0.75GrR 59 CL-3 CN-12 CL-5
1 P-RCV_POWER(5V) 1 G10 1.0 B 2.0 B G6 2E B
0.75W 60 1 1 1
2 P-RCV_GND 2 43E 1.0 GW 2.0 RY 142 V
0.75BY 67 1E
2 2 2
3 P-RCV_SIG 3
0.75BW 56
4 BREAKER SW 4 HEAD LAMP CR-4 WORK LAMP
0.75OR 139A 2.0 RW 143 2A B
5 BREAKER SW 5 30 1
0.75GrW 58 0.75RW 143A 87a 87 85 1A V
6 SW_HORN 6 86 2
2.0 RY 142
7 NC 7 87 CL-6
0.75WY 74
8 NC 8 85
9 NC 9 30 86
87a
10 NC 10 WORK LAMP CR-2
0.75GrW 58
1
1.0 V 141A 4 5 1
2
1.0 V 141
3
4
1.0 G 140 3 2
CN-4 5
0.75GrR 59
1 P-RCV_POEWR(5V) 1
0.75W 60
2 P-RCV_GND 2 CN-25
0.75LOr 61 1.0 G 140
3 P-RCV_SIG 3 CR-36 1
1.0Br 175 0.75BR 109 1.0 B G4 HORN
4 EM'CY STOP SW 4 1 2
0.75Y 62 1.75Y 138A 4 5 1
5 MCU_POWER MAX 5 2
0.75B 63E 1.0 Y 138 1.0 G 140A
CN-20
6 MCU_SIG.GND 6 3
0.75GrW 64 1
7 MCU_DECEL 7 4
1.0 B G5 HORN
0.75B 63F 2
8 MCU_SIG.GND 1.0 L 137 3 2
8 5
0.75L 63F G3 1.0 B
9 SWITCH_Q/COUPLER 9
0.75Y 260 AIR-HEAT
10 SWITCH_Q/COUPLER 10
11 NC 11 CR-62
0.75Br 158A
12 NC 12 1
1.0LY 185 0.75B 56 4 5 1
13 EM'CY STOP SW 13 2
0.75B G41 1.0 Or 139
14 GND 14 3
1.0Or 47A
15 SWITCH POWER 15 CR-5 4
1.0 G 66 135 2.0 Y 1.0 Br 136 3 2
16 SAFETY SOL 16 30 5
27 1.0 BR 87a 87 85
LH CONSOL 86
ANTI- BREAKER
134 2.0 W
87 RESTART
127 1.0 GrR
85
30 86
87a

CN-68
1.0 G 66A
1
1.0 V 183
2

SAFETY SOL
1/2 005
1/2 004
CN-140
0.75Y 260
1
0.75Br 7
2
QUICK COUPLER

CN-263
0.75L 38
2
0.75Y 37
1

1.0 Or 173
0.75W 52
1.0 YR 50

1.0 B G2
AIR COMP RY

0.75BW 81G

0.75GW 177
1.0 ROr 89G

0.75LOr 120

0.75Br 158
0.75V 115

1.0 B G32
1.0 Or 173

1.0 Br 136
CN-14

2
1

4
3

CN-15

10
11
12
2

6
7
8
9
1

4
3

5
0.75B G11

1
2
3

4
5
6
7

4
5
0.75G(sh) 5B

0.75OrW 112

0.75LgW 118

0.75GrW 122
0.75GW 177
0.75V(sh) 6B

0.75Y(sh) 7A

0.75WR 114
0.75YW 166

0.75VW 105

0.75BW 130
0.75L(sh) 8A

0.75LgR 117
0.75YR 50A

0.75LgY 119
0.75LW 133
0.75LOr 120

0.75BrB 103

0.75BR 109

0.75BR 132
1.0 YW 100

0.75LG 121
1.0 GrR 127
0.75GrW 64

0.75OrW 92

0.75W 179

0.75W 131

0.75W 110
1.0 LOr 101
0.75WY 90

0.75BW 81

0.75G 66B

0.75WY 84
0.75G 111
0.75Br 158

0.75R 113
0.75RG 96

0.75Y 104

0.75B 106

0.75V 115
1.0 RW 98

0.75L 102
1.0 B 63A
1.0 B 20A
1.0 ROr 89

0.75YL 35

1.0 B 108

1.0 V 107
1.5 RY 88

1.0 L 169

1.0 YBr 83
0.75G 79

0.75Br 99
1.0 Y 168

0.75V 82

0.75Y 62
1.0 Gr 53

1.0 Gr 94
1.0 V 69

1.0 B 55

1.0 P 95

1.0 Y 97
1.0 B 63

1.0 L 93
0.75G(sh) 5A
0.75V(sh) 5A

0.75B G12
0.75B G13
0.75RW 76

0.75RW 78
0.75WY 74
0.75GR 13

0.75YBr 18
0.75YBr 75
0.75L 77

0.75L 15
2.0 YBr 29

CN-5,5A,5B
2.0W 134
2.0W 28

2.0G 30

0.75Gr 53A

5A-25
5A-26
5A-27
5A-01
5A-28
5A-29
5A-02
5A-03
5A-04
5A-05
5A-30

5A-31
5A-06
5A-07

5A-08
5A-09
5A-10
5A-11

5A-41
5A-42
5A-43
5A-44

5A-49
5A-50
5A-51
5A-52
5A-53

5B-02
5B-03
5B-04
5B-05
5B-06
5B-27
5B-25
5B-28
5B-29
5B-07
5B-08
5B-09

5B-11
5B-30
5B-31
5B-26
5B-32
5B-33
5B-41
5B-42
5B-43
5B-44
5B-45
5B-46
5B-47
5B-48
5B-49
5B-50
5B-51
5B-52
5B-53
5B-54
5B-55
5B-56
5B-57
5B-58
5B-59
5B-34
0.75WY 84
1.0 B 55A
0.75G 79

5-25

5-08
5-06

5-07
5-05
0.75V 82

119
119

119
119

47
CN-376

47
47
CS-46E

0.8ROr
0.8BW
0.8BW
0.75LgW 118
0.75BW 81C

0.75BW 81D
0.75BW 81A

0.75BW 81B

0.75BW 81E
10
11
12
13
14
15
16
17
18
19

26
27

34

0.75BW 81F
0.75LgR 117
0.75LW 133

0.75LgY 119
1
2
3
4
5
6
7
8
9

1.0 ROr 89C

1.0 ROr 89D

1.0 ROr 89A

1.0 ROr 89B

1.0 ROr 89E

0.75BW 81H
0.75LG 121

1.0 ROr 89F

0.75BW 81K
0.75BW 81J
0.75WY 90
3

0.75GrW 122

1.0 ROr 89H

1.0 ROr 89K

0.75BR 132
1

4
5
6
2

EMCY START KEY SW

1.2BrW

0.75OrW 92

1.0 ROr 89J

0.75ROr 25B

1.2BrW

0.75R 113
0.75BrB 103

0.75Y 104

0.8LOr

0.8GW
0.8AA
0.75BW 130

0.8Gr

0.8Gr
0.8Gr
1.0 YW 100

0.8Gr
0.8Gr
0.75VW 105
1.0 LOr 101

0.8Or

0.8Or

0.8Or
0.8Br
1.0 B 63C

1.0 ROr 25A

1.0 B 63D

1.0 ROr 25C

0.8Br
0.75RG 96

0.8B
0.75Br 99
1.0 B 108
1.0 B 63B
1.0 YBr 83

CN-76

1.0 P 95

CD-69
6
5
4
3
2
1

CN-421

C
A
B
CN-370

CN-420
CN-419

CN-236

CN-149

CN-237
1
2
1

1
2

2
1
2
BEACO LAMP SW
ENG. START SIG.

CN-66
1

1
2

1
2
CD-7

CD-31

CD-32

1
CD-24

CD-90

CD-85
CD-36

CD-87
CN-242A
START KEY 24V

OVERLOAD SW
START KEY_BR

RETURN
SUPPLY
START KEY_IG

CD-6
SIG
CD-1
TRVEL ALARM

CD-2

M+

CN-242
P+
NC

C
C

A
B

A
B

A
B
M-

A
B

A
B

C
A
B
P-

C
C

C
WORK LIGHT

A
B
A
B

A
B
CN-81
CABIN LIGHT

2
1
HEAD LIGHT

1
1

2
2
CN-70

CN-88
1
2

1
1
2

2
2

1
CAN_LO(2)

SIG
2
CD-10
INT WIPER

CN-133
CAN_HI(2)

1
5
WASHER

RETURN

RETURN

RETURN
RETURN

RETURN

SUPPLY

RETURN

SUPPLY

SUPPLY
SUPPLY

SUPPLY

RETURN
RETURN

RETURN
SUPPLY
2

SUPPLY
SUPPLY

SUPPLY
M
WIPER

Pa
IG 24V

SWING SWING SWING SWING ATT. ATT. ATT.

SIG

SIG

SIG
SIG

SIG
BREAKER SOL.
GND
GND

SIG
ATT. PS

SIG
SIG

SIG
NC

6
NC

3
NC

PARKING PARKING PARKING

NC
NC

NC

NC
NC
NC

FINE
NC

GOV. MOTOR CONT SOL A1 A2 A3 PRESS SAFETY CONFLUX

AIR HYD TEMP TRAVEL WORK SWING OVER BOOM ARM BOOM TRAVEL POWER ATT. ATT. BOOM
MEMBRANE CONT. CLEANER FUEL FLOW FLOW SOL. ARM OUT BUCKET
IN TRAVEL BZ
SW LEVEL LOAD UP PRIORITY HIGH MAX
EPPR 1 EPPR 2 OUT DOWN

20K6-95203-00

4-3-1
·ELECTRICAL
ELECTRICAL CIRCUIT (2/2)
- MACHINE SERIAL NO. : -#01185
CS-67
10
9 9 10
DC/DC CONVERTER CIGAR LIGHTER 8 CS-33
12V SOCKET 25A 0.8B
HOUR METER 7 6 5 5

24V
5
6 4

3 12V 12V
25B 0.8B 4 4

h
5 3 3 3

1 GND
70 1.0Y 2 0.8Br 15

2 24V

CN-48

CL-2
4 1 2 2
0.8G 16

CN-139

CN-138
3

3
2
1
1 1

1
2
24 0.8ROr
CN-21 2 7 8 HARNESS LH,CONSOLE

0.75ROr
65 0.8ROr
1 EM'CY STOP SW

0.75YL

1.5Gr
0.75R
0.75B
1 WIPER CUT

1.5B
3

60 1.5Or
10

1.5BW
R QUICK COUPLING SW

22A 1.5B

1.5Or
1.5Or
2 CN-247 CN-4 NO. DESTINATION
Gr 12 0.8Gr 1
5 3 1 0.8Gr
CN-113 5V

CS-53
1

10A
A 1 MCU_5V

3
2
1
R 4A

85
79
4 25 0.75B RETURN 0.8Or 2 2 0.8Or

60

22
21

LH
4 G 8 1 PROPORTIONAL B 2 2 MCU_RETURN
5 56 0.75Or SIG 0.8LOr 3 3 0.8LOr
L 9 2 C 3 3 MCU_DIAL SIG

CN-432
0.8Br

B
6 M 2 6 15
4 4 EM'CY STOP SW

Or
BUZZER CS-1 CN-24 0.8Y 4 4 0.8Y

2A

3
2
1
power 1 5 5 MCU_POWER MAX
CN-56B 1.0Gr 11 0.75G 2 max B 0.8B 5 5 0.8B
WIPER MOTOR

11
0.75RY 2 2 6 6 MCU_SIG.GND
11 RW CAM 6.5V 0.75V 3 CN-10 NO. DESTINATION CS-29 0.8Grw 6 6 0.8Grw
1 1 7 MCU_DECEL

0.75ROr
12 0.75BW WR 1 decel 7
2 CAM GND CL-1 1 1 NC R 0.8B 7 7 0.8B

1.5Gr
2 8 MCU_SIG.GND

1.5B
0.75RY 1.0Gr 11 8
1
3
B CAM DIFF H DOOR S.W 3 SPEAKER RH 2 2 NC CS-19 8 0.8L
CN-141 CN-157 2 0.75Br WL 0.75Y 1 1 0.75Y
FUSE 2 L 9 0.8V
9 9 Q/COUPLER SOL +
G 8 4 CAM DIFF L 2 3 3
FEED BACK 1 1.0B 6B 2 0.75G 10 10 Q/COUPLER SOL -
W

3
2
1
W 1 CN-17 ANTENA POWER 5 CAM 1 1
3 0.75V
4 4 CASSETTE_RH-
11 11 NC
MOTOR DRIVE SIG 2 L CN-23 1 Gr
L 9 6 CAM 2 ROOM LAMP 5 5 CASSETTE_RH+
MOTOR DRIVE- 3 1 0.75Y 4 4 0.75Y 12 12 NC
L 2 6 6 CASSETTE_LH- 16 0.8G
R 10 1 W 0.75GR 69 7 CAM 3 5 CS-4 13 13 EM'CY STOP SW
MOTOR DRIVE+ 4 2 L 0.75L 5 0.75L
B 2 2 B 1.0B 73 8 CAM SHIELD 1 7 7 CASSETTE_LH+ B C 1.0B 12 12 1.0B
GND 5 3 6 2.0B A 14 14 GND
GrW 3 3 GrW 1.0RY 70 8 8 GND 13 0.8RW
VCC 6 4 CLUSTER SPEAKER LH CL-7 7 2.0B B
0.8G 14 14 0.8G
15 15 IG24V_FUSE
R 4 4 R 1.0R 14 CN-56A 9 9 GND
CONTINUE 24V 7 5 1.0BrW 8 8 1.0BrW A C 16 16 SAFETY SOL
V 15 10 0.75R RW 10 10 BEACON SW
V 5 5 0.75V 1 BATT.24V M 9 2.0V SAFETY SW
WASHER P/P 8 6 9 1.0B 6A
L 6 6 L 0.75L 71 0.75RB WR 11 11 CABIN LIGHT RY
2 IG 24V 10 2.0V
WASHER SIG. 9 7 59 0.75B B 12 12 CABIN LIGHT RY CS-67
INT. SIG 10
Br 7 7 Br
8
0.75YBr 72 3 GND BEACON LAMP 10
8 0.75L Y
WIPER CUT SW 11
Or 11 4 CAN1_HI CL-8 CL-10 CL-9 10 9 9
7 0.75Y
5
Gr
CAN1_LO 2
2.0V 9 2
2V 10A 10 2.0V
2
HARNESS CABIN 0.8L 8A
N.C 12 6 0.75V WL 2B 7A 7 2B 8
Gr 12 6 CAN2_HI 2B 6 1 1 1.0B 12A
FEED BACK 13 5 0.75G 1 6 7
W 5
7 CAN2_LO CABIN LIGHT 4
WIPER MOTOR CONT. WIPER MOTOR HARNESS 8
L
RS-232 RX
6
1.0B 12B
L 3 5
9 RS-232 TX 2 0.8V 9
CS-99 90 0.75Y L 1 4
10 AUX LEFT
10 91 0.75L L 3
11 AUX RIGHT 0.8RW 13
10 9 9
0.75RY 3
92 0.75B
12 L AUX GND 8 7 2 0.8L 8
8 1
0.75B 25B CLUSTER
6 7 QUICK COUPLER
4
5
6
CN-5
0.75Or 24E 1 1 NC
3 5
2 0.75YR 3 2 2 NC
1 4
3 3 NC
3
0.75L 40 4 4 NC
8 7 2 0.75G 5
0.75Y 42 5 5 CAN2_LO
1 0.75V 6
6 6 CAN2_HI
AIR-COMP 0.75Y 7
7 7 CAN1_LO CN-246
0.75L 8 5V
0.75GrR 1
8 8 CAN1_HI A
0.75B 9 RETURN 0.75W 2
PROPORTIONAL B

RH
9 9 CLUSTER_GND
0.75RB 10 SIG
C
0.75BY 3 CN-6 NO. DESTINATION
10 10 CLUSTER_IG 24V 1 0.75GrR
1.0 R 11 1 1 MCU_5V
11 11 CLUSTER_BATT.24V 2 0.75W
0.75R 178 2 2 MCU_SUPPLY GND
12 12 CAM POWER 0.75G 4 3 0.75BY
0.75BW 54 BREAK 1 3 3 MCU_DIAL SIG
13 13 CAM GND B 0.75BW 5 5 0.75BW
0.75W 12 2 4 4 BREAKER
14 14 CASSETTE RADIO IG CS-26 0.75B 4B 4 0.75Or
0.75GR 13 HORN 1 5 5 BREAKER
CS-108 15 15 WIPER MOTOR DRIVE SIG R 0.75Grw 7 7 0.75Grw
1.0 RY 14 2 6 6 HORN RY
16 16 WIPER MOTOR IG24V CS-5 0.75L 8 8 0.75L
10 0.75L 15 7 7 NC
10 9 17 17 WASHER SIG. 2 L 0.75L 9 9 0.75L
9 1.0 R 16 8 8 NC
0.75Or 24C 18 18 WIPER MOTOR BATT24V 0.75Gr 10 10 0.75Gr
8 1.0 V 17 9 9 NC
0.75Gr 41 19 19 WASHER P/P 1 Gr 0.75Gr 11 11 0.75Gr
6 7 0.75YBr 18 10 10 NC
5 20 20 INT. SIG
4 6 1.0 B 19
3 5 21 21 WIPER MOTOR_GND CS-26A
2 0.75RY 151 0.75BW 5A
4 22 22 LVDS POS 2
1 0.75Br 152
23 23 LVDS NEG 0.75G 4A
3 0.75Or 56 1
1.0Or 24B
8 7 2 1.0 B 20
24 24 Q/COUPLER SOL+ ACCEL DIAL LED
1
1.0YW 44 25 25 CAN_SH BREAKER

CN-279
1.5 Dr 21
26 26 DC/DC CONVERTER_24V

1
2
AUTO GREASE 1.0Y 70
27 27 Q/COUPLER SOL-
1.5 B 22
28 28 DC/DC CONVERTER_GND

0.75ROr
2.0 B 23
29 29 CABIN_GND

0.75B
1.0 ROr 24
30 30 POWER_FUSE
1.0 B 25
31 31 GND

27B
25A
32 32 NC
28 2V 33 33 NC HARNESS RH,CONSOLE
2.0 VW 26
34 34 CABIN LAMP RY
CN-427 1.0 BR 27
35 35 ENG. START SIG.
0.8W 33 2.0 W 28
IG 24V 1 36 36 START KEY 24V
0.75B 23 1.0 B 24A
GND 2 37 37 CABIN_GND CN-7 NO.
0.75V 6C 1.0 VW 26A DESTINATION
CAN (HIGH) 3 38 38 CABIN LAMP RY 25 0.75ROr
0.75G 5C 1.0 YBr 29 1 1 ILLUMINATION
CAN (LOW) 4 39 39 START KEY_BR
1.0 G 30 2 2 NC
READER 40 40 START KEY_IG CN-156 27 1.5B
0.75ROr 1 3 3 GND
41 41 ILLUMINATION 1.0B 38E 32 1.0Or
1.5 Gr 2 2 4 4 SWITCH POWER
CN-125A 42 42 CIGAR LIGHT_IG24V 1.0VW 33 33 1.0VW
1.5 B 3 1 5 5 AIR SHEAT POWER
1.5W 30B 43 43 CIGAR LIGHT_GND 34 0.75V
BATTERY POWER 1 6 6 NC
1.2G 33A 1.0 B 33
44 44 CONT._GND AIR SEAT 37 0.75YR
KEY "IG" 2 0.75R 153 7 7 FINE SWING SIG
0.75V 6A 45 45 CAM0 POWER 38 1.0B
CAN (HIGH) 3 0.75BL 154 8 8 GND
RX232(1)-TX 46 46 CAM0 LIN 39 0.75W
4 0.75L 155 9 9 SWING LOCK SIG.
GND (SERIAL) 5 47 47 CAM0 LVDS POS CS-52 12 0.75Gr
10 MCU_5V
0.75Y 156 10
RX232(2)-TX 6 48 48 CAM0 LVDS NEG 10 13 0.75W
0.75B 157 11 11 MCU_ACCEL SIG.
49 49 CAM0 GND 10 9 14 0.75B
RX232(2)-RX 7 9 12 MCU_SUPPLY GND
1.0 BrW 34 0.75Y 35 12
0.75B 74 50 50 BEACON LAMP 8
CAN (SHIELD) 8 0.75YL 35
51 HOUR METER SIG 0.75B 38
RX232(1)-RX 9 51 6 7
5
F/W DOWN 10 52 52 NC 4 6
0.75G 5A 0.75Y 37
CAN (LOW) 11 53 53 AIR COMP RY 3 5
0.75B 85B 0.75L 38 2
MAIN GND 12 54 54 AIR COMP RY 1 4
0.75Y 35
55 55 AUTO GREESE LAMP 3
RMS 56 0.75Or 32B
56 AUTO GREESE RESET 2
8 7
57 57 NC 1
58 58 NC 2PCS & DOZER
0.75Y 42
59 59 ROOM LAMP 24V
1.0 GW 43
60 60 ILLUMINATION
CS-83
10
10 9 9
CN-10 0.75YW 36
1 NC 1
CS-2A 8
0.75B 38A
30 1.5W

H0 I
1 6 7
2 NC 2 32 1.0YOr 5
0.75Y 45 2 4 6

0, I
3 ROOM LAMP 24V 3 47 1.0R 0.75Or 32
0.75G 51 3 4 3 5

H
4 SPEAKER RH- 4 2 0.75YW 36
0.75V 53 4 1 1 4

BR ACC
B
5 SPEAKER RH+ 5 2
0.75Y 52 5 3 3
6 SPEAKER LH- 6 29 1.0BOr 0.75B 38B
7 SPEAKER LH+ 7
0.75L 55 6 8 7 2 0.75YW 37
2B 24 2B 1

ST C
23 5
8 GND 8 6
9 GND
1B 23A FINE SWING
9
1BrW 39 START KEY SW
10 BEACON LAMP 10
11 CABIN LIGHT
2.0VW 28 28 2V CS-83
11
2.0VW 28B 6C 0.75V CAN_H 10
12 CABIN LIGHT 12 A 10 9
5C 0.75G CAN_L 9
B 0.75W 39A
HARNESS CABIN 85G 0.75B GND 8
C 0.75B 38C
CN-27A 6 7
0.75W 13 5
ACC 1 CS-2B 4 6
0.75B 85E 0.75Or 32C
ILL- 2 CN-125 CN-125 3 5
3 30A 1.0W 2 0.75W 39
NC 1 1 1 4
0.75G 51 47 1.0R R 77
SPK FRT RH- 4 2 2 3
0.75Y 52 85C 1.0B
SPK FRT LH- 5
33 1.0G
3 3
R 77
8 7 2
TEL MUTE 6 4 4 1
ANT 12V 7 CN-142 0.75Gr 12
0.75Y 45A GPS CONN. SWING LOCK + A
BACK UP+ 8 0.75W 13
0.75GW 46 S B
ILL+ 9 0.75B 14
- C
NC 10
SPK FRT RH+ 11
0.75V 53 CN-402 ACCEL DIAL
36 0.75L
1 LVDS POS
REMOCON+ 12 38 0.75B
2 GND
REMOCON GND 13 37 0.75Y
0.75L 55 3 LVDS NEG
SPK FRT LH+ 14 34 0.75R
4 POWER 24V
NC 15
0.75B 85D 5 NC
GND 16 35 0.75Br
6 ADJUST SIGNAL
CN-27B
FRONT VIEW CAMERA
USB 5V 1
USB D- 2 AAVM
USB D+ 3
USB_GND 4
N.C 5 HARNESS RH SIDE
0.75Y 90
AUX L 6

CAM3 LVDS NEG

CAM3 LVDS POS
CAM1 LVDS NEG

CAM2 LVDS NEG

CAM2 LVDS POS
CAM0 LVDS NEG
CAM0 LVDS POS

CAM1 LVDS POS

CLU VOUT NEG
0.75L

CLU VOUT POS

91

CAM3 POWER
CAM1 POWER

CAM2 POWER
AUX R 7

CAM0 POWER
RS232_GND
0.75B

CAM3 GND
92

CAM2 GND
CAM1 GND
CAM0 GND
RS232_RX
RS232_TX

CAM3 LIN
AUX GND 8

CAM1 LIN

CAM2 LIN
CAM0 LIN

CAN Lo
CAN Hi
IGN 24V
IGN 24V

GND
GND
CASSETTE RADIO

CN-401

60
74
75

20

22

78
21

56
57
23
24

26
27
28
29
30

46
47
48
49
50

76

86
77

87
58

79
59

71
80

72
THERMISTOR INTAKE ACT`R TEMP ACT`R MODE ACT`R

1.0RW
1.0RW

0.75BrW

0.75ROr
0.75ROr

0.75ROr
0.75BrG

0.75YBr
0.75RW
0.75RW

0.75YW
0.75YW

0.75BW

0.75BW

0.75BrL
0.75LBr
0.75LW

0.75RG
0.75LW

0.75BR
0.75YG
0.75LG
0.75LB

0.75BL
0.75Br
0.75R

0.75B
0.75Y
0.75L

1.0B
1.0B
3 M 1 M 4 2 7
3 M 7
7
5

236A

204A
212

216
303
205

207

268
213
214
215

217

260

264

265
266

269
302

208
209
210
211

261
262

267
206

263
236

204
CONTROL BOX(A)
2
1

5
6
7
5
6
7

1
2
3
4
5
6
7

1
2
3
4
1
2
3
4

6
5
7B
GND 1
20E

20B

20A

6
23

3B

CN-405
20
15

3A
14

11
10
12
6

13

2
3

INLET (PBR)
4
5

5 267 0.75LBr
TEMP (PBR) 3 1 LVDS POS
4 269 0.75BL
MODE(PBR) 4 2 GND
REF(+5V) 5
3 HARNESS AIR-CON 268 0.75YBr
3 LVDS NEG
265 0.75ROr
NC 6 CN-11 NO. DESTINATION 4 POWER 24V
1A 7
BATTERY(+) 7 1 1 AC GND 5 NC
20F 19 266 0.75BrL
SENSOR GND 8 2 2 BLOWER ON SIG. 6 ADJUST SIGNAL
15 8
INLET ACT`R(REC) 9 3 3 IG 24V RIGHT VIEW CAMERA
14
INLET ACT`R(FRE) 10
13 1
4 4 NC SERVICE TOOL CN-404
TEMP ACT`R(COOL) 11 5 5 AC CONTROLLER B+ 0.75YW 205 262 0.75LG
A A 1 LVDS POS
12 18 264 0.75BR
TEMP ACT`R(WARM) 12 6 6 COMP(DPS) 0.75LW 206 2 GND
11 17 B B
MODE ACT`R(FRONT) 13 7 7 CAN LOW 0.75BW 207 263 0.75YG
10 C C 3 LVDS NEG
16 8 260 0.75RG
MODE ACT`R(FRONT-DEF) 14 8 CAN HI POWER 24V
CN-406 4
NC 15 5 NC
8A 261 0.75BrG
IGN.24V 16 6 ADJUST SIGNAL

CONTROL BOX(B) LEFT VIEW CAMERA

20 22 CN-403
>

SENSOR GND 1 0 215 0.75LW

20C 1 LVDS POS
NC 2 0 217 0.75BW
19 2 GND
BLOWER ON SIG 3 INCAR SENSOR 216 0.75YW
18 3 LVDS NEG
A/C THERMO (+) 4 213 0.75RW
4 POWER 24V
NC 5
17 CN-9 5 NC
CAN LOW 6 21 214 0.75BrW
>

16 0 > 1.0 RW 184 6 ADJUST SIGNAL

CAN HI 7 20D
0
2/2 001 1
NC 8 2 REAR VIEW CAMERA
AMBIENT SENSOR > 0.75Br 152A
NC 9 2/2 002 3
7C > 0.75RY 151A
GND 10 2/2 003 4
> 0.75V(sh) 6D
NC 11 2/2 004 5
26 > 0.75G(sh) 5D
FET(G) 12 2/2 005 6
25A > 0.75R 153
FET(D) 13 2/2 006 7
24A > 0.75BL 154
BLOWER MOTOR(+) 14 2/2 007 8
> 0.75L 155
NC 15 2/2 008 9
23 > 0.75Y 156
EVAP SENSOR(5V) 16 2/2 009 10
> 0.75B 157
NC 17 2/2 010 11
17A

16A
19A

22 1.0 B G1
7A
24
25
26

INCAR SENSOR(5V) 18
25

12
24

8
7

21
AMB SENSOR(5V) 19
3
2
4

1
2
1

NC 20
CAN CONNECT
WITH APTC
2
4
M

FET
1
3

BLOWER BLOWER
MOTOR RELAY

20K6-95100-00

4-4
- MACHINE SERIAL NO. : #01186-

10
9 10
9
DC/DC CONVERTER CIGAR LIGHTER CS-33
8
12V SOCKET 25A 0.8B

24V
HOUR METER 7 6 5 5
5

12V
6 4 4 4
25B 0.8B

h
5 3 3 3

CN-48
GND
70 1.0Y 2 0.75Br 15

12V
24V
4

CL-2
1 2 2

CN-138
0.75G 16

CN-139

3
2
1
3 1 1

1
2
24 0.8ROr

3
2
1
2
CN-21 7 8

0.75ROr
65 0.8ROr EM'CY STOP SW

0.75YL
1

1.5Gr
HARNESS LH,CONSOL

0.75R
0.75B

1.5B
3 1 WIPER CUT

1.5Or

1.5BW
R 10

22A 1.5B

1.5Or
QUICK COUPLING SW

1.5Or
2 CN-247 CN-4 NO. DESTINATION
Gr 12
5 3 5V
0.75Gr 1 1 0.75Gr

10A
CS-53
CN-113 1 1

3
2
1
R 4A A MCU_5V

85
79
60
4 25 RETURN 0.75Or 2 2 0.75Or

60

22
0.75B

21

LH
4 G 8 1
PROPORTIONAL B 2 2 MCU_RETURN
5 56 0.75Or SIG 0.75LOr 3 3 0.75LOr
L 9 2 C 3 3 MCU_DIAL SIG

B
0.75Br

CN-432
6 M 2 6 15
4 4 EM'CY STOP SW

Or

2A
BUZZER CS-1 0.75Y 4 4 0.75Y

3
2
1
power 1 5 5 MCU_POWER MAX
CN-56B 1.0Gr 11 0.75G 2 max B 0.75B 5 5 0.75B

11
WIPER MOTOR 0.75RY 2 2 6 6 MCU_SIG.GND
11 RW 0.75V 3 CN-10 NO. DESTINATION cs-29 0.75Grw 6 6 0.75Grw
1 CAM 6.5V

0.75ROr
0.75BW 1 1 7 7 MCU_DECEL
12 WR CL-1 1 1 NC decel R 0.75B 7 7 0.75B

1.5Gr
2 CAM GND

1.5B
0.75RY 1.0Gr 11 2 8 8 MCU_SIG.GND
CN-157 1
3
B
CAM DIFF H DOOR S.W 3 SPEAKER RH 2 2 NC cs-19 8 0.75L
CN-141 0.75Y 1 1 0.75Y 9 9 Q/COUPLER SOL +
2 0.75Br WL 2 3 3 FUSE 2 L 9 0.75V
G 8 4 CAM DIFF L 10 10 Q/COUPLER SOL -
FEED BACK 1 W 1.0B 6B 2 0.75G

3
2
1
W 1 ANTENA POWER 5 CAM 1 1 4 4 CASSETTE_RH-
11
MOTOR DRIVE SIG 2 CN-17 L CN-23 MG651032 3 0.75V 1 Gr
11 NC
L 9 6 CAM 2 ROOM LAMP 5 5 CASSETTE_RH+
12 12 NC
MOTOR DRIVE- 3 1 L 0.75Y 4 4 0.75Y
R 10 1 W 0.75GR 69 7 CAM 3 2 6 6 CASSETTE_LH- 16 0.75G
MOTOR DRIVE+ 4 2 L 0.75L 5 5 0.75L CS-4 13 13 EM'CY STOP SW
2 2 B 73 8 CAM SHIELD 1 7 7 CASSETTE_LH+ B C 1.0B 12 12 1.0B
B 1.0B 6 2.0B A 14 14 GND
GND 5 3
3 GrW 70 CLUSTER 8 8 GND 13 0.75RW
GrW 3 1.0RY SPEAKER LH 7 2.0B B 15 15 IG24V_FUSE
VCC 6 4
R 4 4 R 1.0R 14 CN-56A CL-7 9 9 GND
C
0.75G 14 14 0.75G
16 16 SAFETY SOL
CONTINUE 24V 7 5 1.0BrW 8 8 1.0BrW A
10 0.75R RW 10 10 BEACON SW
V 5 5 V 0.75V 15 1 BATT.24V
WASHER P/P 8 6 9 0.75RB WR
M 1.0B 6A 9 2.0V SAFETY SW
L 6 L 0.75L 71 11 11 CABIN LIGHT RY
6 2 IG 24V 10 2.0V
WASHER SIG. 9 7 59 0.75B B 12 12 CABIN LIGHT RY
CS-67
Br 7 7 Br 0.75YBr 72 3 GND BEACON LAMP
INT. SIG 10 8 8 0.75L Y 10
WIPER CUT SW 11
Or 11 4 CAN1_HI CL-8 CL-10 CL-9 10 9
7 0.75Y Gr 2V 10A 10 2.0V HARNESS CABIN 9
WIPER MOTOR HARNESS 5 CAN1_LO 2.0V 9 0.75L
N.C 12 2 2 2 8A
6 0.75V WL 2B 7A 7 2B 8
Gr 12 6 CAN2_HI 2B 6 1.0B 12A
FEED BACK 13 1 1 1 6 7
5 0.75G W 5
7 CAN2_LO
WIPER MOTOR CONT. L CABIN LIGHT 4 6
8 RS-232 RX 1.0B 12B
L 3 5
9 RS-232 TX 2 0.75V 9
CS-99 90 0.75Y L 1 4
10 AUX LEFT
10 91 0.75L L 3
9 11 AUX RIGHT 0.75RW 13
10 2
9 92 0.75B L 8 7
0.75RY 3 12 AUX GND 0.75L 8
8 1
6
0.75B 25B CLUSTER
5 7 QUICK COUPLER
4 CN-5
6
0.75Or 24E 1 1 NC
3 5
2 0.75YR 3 2 2 NC
1 4
3 3 NC
3
0.75L 40 4 4 NC
8 7 2 0.75G 5
0.75Y 42 5 5 CAN2_LO
1 0.75V 6
6 6 CAN2_HI
AIR-COMP 0.75Y 7
7 CAN1_LO CN-246
7 0.75GrR 1
0.75L 8 5V
A
8 8 CAN1_HI

RH
0.75B 9
RETURN 0.75W 2
9 9 CLUSTER_GND
PROPORTIONAL B
0.75RB 10 SIG 0.75BY 3 CN-6 NO. DESTINATION
10 10 CLUSTER_IG 24V C 1 0.75GrR
1.0 R 11 1 1 MCU_5V
11 11 CLUSTER_BATT.24V 2 0.75W
0.75R 178 2 2 MCU_SUPPLY GND
12 12 CAM POWER 0.75G 4 3 0.75BY
0.75BW 54 1 3 3 MCU_DIAL SIG
13 13 CAM GND BREAK B 0.75BW 5 5 0.75BW
0.75W 12 2 4 4 BREAKER
14 14 CASSETTE RADIO IG CS-26 0.75B 4B 4 0.75Or
0.75GR 13 1 5 5 BREAKER
CS-108 15 15 WIPER MOTOR DRIVE SIG HORN R 0.75Grw 7 7 0.75Grw
1.0 RY 14 2 6 6 HORN RY
16 16 WIPER MOTOR IG24V CS-5 0.75L 8 8 0.75L
10 0.75L 15 7 7 NC
10 9 17 17 WASHER SIG. 2 L 0.75L 9 9 0.75L
9 1.0 R 16 8 8 NC
0.75Or 24C 18 18 WIPER MOTOR BATT24V 0.75Gr 10 10 0.75Gr
8 1.0 V 17 9 9 NC
0.75Gr 41 19 19 WASHER P/P 1 Gr 0.75Gr 11 11 0.75Gr
6 7 10 10
5 0.75YBr 18 NC
4 20 20 INT. SIG
6 1.0 B 19
3 5 21 21 WIPER MOTOR_GND CS-26A
2 0.75RY 151
22 22 LVDS POS 0.75BW 5A
1 4 2
0.75Br 152
23 23 LVDS NEG 0.75G 4A
3 0.75Or 56 1
1.0Or 24B 24 Q/COUPLER SOL+
2 24
8 7 1.0YW 44 1.0 B 20 ACCEL DIAL LED BREAKER
1 25 25 CAN_SH

CN-279
1.5 Dr 21
26 26 DC/DC CONVERTER_24V

1
2
AUTO GREASE 1.0Y 70
27 27 Q/COUPLER SOL-
1.5 B 22
28 28 DC/DC CONVERTER_GND

0.75ROr
2.0 B 23
29 29 CABIN_GND

0.75B
1.0 ROr 24
30 30 POWER_FUSE
1.0 B 25
31 31 GND

27B
25A
32 32 NC
33 33 NC
28 2V 2.0 VW 26
34 34 CABIN LAMP RY
CN-427 1.0 BR 27
35 35 ENG. START SIG.
0.8W 33 2.0 W 28
IG 24V 1 36 36 START KEY 24V HARNESS RH,CONSOL
0.75B 23 1.0 B 24A
GND 2 37 37 CABIN_GND
0.75V 6C 1.0 VW 26A CN-7 NO. DESTINATION
CAN (HIGH) 3 38 38 CABIN LAMP RY 25 0.75ROr
0.75G 5C 1.0 YBr 29 1 1 ILLUMINATION
CAN (LOW) 4 39 39 START KEY_BR
1.0 G 30 2 2 NC
READER 40 40 START KEY_IG 27 1.5B
0.75ROr 1 CN-156 3 3 GND
41 41 ILLUMINATION 1.0B 38E 32 1.0Or
1.5 Gr 2 2 4 4 SWITCH POWER
CN-125A 42 42 CIGAR LIGHT_IG24V 1.0VW 33 33 1.0VW
1.5 B 3 1 5 5 AIR SHEAT POWER
1.5W 30B 43 43 CIGAR LIGHT_GND 34 0.75V
BATTERY POWER 1 AIR SEAT 6 6 NC
1.2G 33A 1.0 B 33
44 44 CONT._GND 37 0.75YR
KEY "IG" 2 7 7 FINE SWING SIG
0.75V 0.75R 153
6A 45 45 CAM0 POWER 38 1.0B
CAN (HIGH) 3 8 8 GND
0.75BL 154
RX232(1)-TX 46 46 CAM0 LIN 39 0.75W
4 0.75L 155 9 9 SWING LOCK SIG.
GND (SERIAL) 5 47 47 CAM0 LVDS POS CS-52 12 0.75Gr
0.75Y 156 10 10 MCU_5V
48 48 CAM0 LVDS NEG 10 13 0.75W
RX232(2)-TX 6 11 11 MCU_ACCEL SIG.
0.75B 157 10 9
49 49 CAM0 GND 9 14 0.75B
RX232(2)-RX 7 12 12 MCU_SUPPLY GND
0.75B 74 1.0 BrW 34 0.75Y 35
CAN (SHIELD) 8 50 50 BEACON LAMP 8
0.75 YL 79 0.75B 38
RX232(1)-RX 9 51 51 HOUR METER 6 7
5
F/W DOWN 10 52 52 NC 4 6
0.75G 5A 0.75Y 37
CAN (LOW) 11 53 53 AIR COMP RY 3 5
0.75B 85B 0.75L 38 2
MAIN GND 12 54 54 AIR COMP RY 1 4
0.75Y 35
RMS 55 55 AUTO GREESE LAMP 3
0.75Or 32B
56 56 AUTO GREESE RESET 2
8 7
57 57 NC 1
58 58 NC 2PCS & DOZER
0.75Y 42
59 59 ROOM LAMP 24V
1.0 GW 43
60 60 ILLUMINATION
CS-83
10
10 9
9
CN-10 0.75YW 36
CS-2A 8
1 NC 1 30 1.5W 0.75B 38A

H0 I
1 6 7
2 NC 2 32 1.0YOr 5
0.75Y 45 4 6

0, I
3 2 32
ROOM LAMP 24V 3 47 1.0R 0.75Or
0.75G 51 4 3 5

H
3 0.75YW 36
4 SPEAKER RH- 4 2
0.75V 53 4 1 1 4

BR ACC
5 SPEAKER RH+ 5 2
0.75Y 52 5 3 3
6 SPEAKER LH- 6 29 1.0BOr 0.75B 38B
0.75L 55 6 2
7 SPEAKER LH+ 8 7 0.75YW 37
7
2B 23 24 2B 5 1

ST C
8 GND 8 6
9
1B 23A FINE SWING
GND 9
1BrW 39 START KEY SW
10 BEACON LAMP 10
2.0VW 28 28 2V CS-83
11 CABIN LIGHT 11
2.0VW 28B 6C 0.75V CAN_H 10
12 CABIN LIGHT 12 A 10 9
5C 0.75G CAN_L 9
B 0.75W 39A
HARNESS CABIN 85G 0.75B GND 8
C 0.75B 38C
CN-27A 6 7
0.75W 13 CS-2B 5
ACC 1 4 6
0.75B 85E 0.75Or 32C
ILL- 2 5
CN-125 CN-125 3
2 0.75W
3 30A 1.0W 39
NC 1 1 1 4
0.75G 51 47 1.0R R 77
SPK FRT RH- 4 2 2 3
0.75Y 52 85C 1.0B
SPK FRT LH- 5 3 3 2
8 7
TEL MUTE 6 33 1.0G R 77
4 4 1
CN-142
ANT 12V 7 SWING LOCK 0.75Gr 12
0.75Y 45A GPS CONN. + A
BACK UP+ 8 0.75W 13
0.75GW 46 S B
ILL+ 9 0.75B 14
- C
NC 10
0.75V 53 CN-402 ACCEL DIAL
SPK FRT RH+ 11 36 0.75L
1 LVDS POS
REMOCON+ 12 38 0.75B
2 GND
REMOCON GND 13 37 0.75Y
0.75L 55 3 LVDS NEG
SPK FRT LH+ 14 34 0.75R
4 POWER 24V
NC 15
0.75B 85D 5 NC
GND 16 35 0.75Br
6 ADJUST SIGNAL
CN-27B
FRONT VIEW CAMERA
USB 5V 1
USB D- 2 AAVM
USB D+ 3
USB_GND 4
N.C 5 HARNESS RH SIDE

CAM3 LVDS NEG

CAM3 LVDS POS
CAM1 LVDS NEG
0.75Y

CAM2 LVDS NEG

CAM2 LVDS POS
CAM0 LVDS NEG
CAM0 LVDS POS

CAM1 LVDS POS

90
AUX L 6

CAM3 POWER
CAM1 POWER
VIDEO_OUT H

CAM0 POWER

CAM2 POWER
VIDEO_OUT L
0.75L 91

RS232_GND
AUX R 7

CAM3 GND
CAM2 GND
CAM1 GND
CAM0 GND
RS232_RX
RS232_TX
0.75B

CAM3 LIN
92

CAM1 LIN
CAM0 LIN

CAM2 LIN
AUX GND 8

CAN Lo
IGN 24V

CAN Hi
IGN 24V

GND
GND
CASSETTE RADIO

CN-401

31
11
12

27

20
16

23
25
26
14

22

17
29

34
13
18

30

35

15
24
19

32

10
4

1
5

3
7

9
B1
0
B3
0 INTAKE ACT`R MIX ACT`R MODE ACT`R
DUCT SENSOR

1.0RW
1.0RW

0.75BrW

0.75ROr
0.75ROr

0.75ROr
0.75BrG

0.75YBr
0.75RW
0.75RW

0.75YW
0.75YW

0.75BW

0.75BW

0.75BrL
0.75LBr
0.75LW

0.75RG
0.75LW

0.75BR
INCAR SENSOR

0.75YG
0.75LG
0.75LB

0.75BL
B2

0.75Br
0.75R

0.75B
0.75Y
0.75L
0

1.0B
1.0B
B3 1 2 7
4
0 3 M 7 M 3 M 7
5
AMBIENT SENSOR

236A

204A
212

216
303
205

207

268
213
214
215

217

260

264

265
266

269
302

208
209
210
211

261
262

267
206

263
236

204
2
1

5
6
7
5
6

1
2
3
4
5
6
7

1
2
3
4

6
1
2
3
4

5
CONTROL BOX(B)
B1
INCAR SENSOR 1
A14
A15

A10

A12
A13
A7
B4

A17

B2
A6

A7
A7

A9
A8

AMBIENT SENSOR 2 CN-405

B3 267 0.75LBr
TEMP (PBR) 3 1 LVDS POS
B4 269 0.75BL
DUCT SENSOR 4 2 GND
HARNESS AIR-CON 268 0.75YBr
NC 5 3 LVDS NEG
265 0.75ROr
NC 6 CN-11 NO. DESTINATION 4 POWER 24V
B7 A17
FET 7 1 1 AC GND 5 NC
B8 B11 266 0.75BrL
FET 8 2 2 BLOWER ON SIG. 6 ADJUST SIGNAL
B9 A4
COMP(DPS) 9 3 3 IG 24V RIGHT VIEW CAMERA
B10 B10
REVERSE FAN SIG 10 4 4 REVERSE FAN SIG CN-404
B11 A16
BLOWER ON SIG 11 5 5 AC CONTROLLER B+ 0.75YW 205 262 0.75LG
A A 1 LVDS POS
B9 264 0.75BR
NC 12 6 6 COMP(DPS) 0.75LW 206
A1 SERVICE TOOL B B 2 GND
NC 0.75BW 207 263 0.75YG
7 7 C C 3 LVDS NEG
A3 260 0.75RG
8 8 ILLUMINATION 4 POWER 24V
CN-406
5 NC
261 0.75BrG
6 ADJUST SIGNAL
LEFT VIEW CAMERA
CONTROL BOX(A)
1
A1 CN-403
NC 215 0.75LW
1 LVDS POS
NC 2 217 0.75BW
A3 2 GND
ILLUMINATION 3 216 0.75YW
A4 3 LVDS NEG
AC24V 4 213 0.75RW
4 POWER 24V
NC
A6 CN-9 5 NC
MODE ACT 6 214 0.75BrW
A7 1.0 RW 184 6 ADJUST SIGNAL
RETURN 7 2/2 001 1
A8 REAR VIEW CAMERA
MIX ACT 8 2
A9 0.75Br 152A
MIX ACT 9 2/2 002 3
A10 0.75RY 151A
MODE ACT 10 2/2 003 4
0.75V(sh) 6D
NC 11 2/2 004 5
A12 0.75G(sh) 5D
MIX ACT 12 2/2 005 6
A13 0.75R 153
MIX ACT 13 2/2 006 7
A14 0.75BL 154
INTAKE ACT 14 2/2 007 8
A15 0.75L 155
INTAKE ACT 15 2/2 008 9
A16 0.75Y 156
CONTROLLER B+ 16 2/2 009 10
A17 0.75B 157
GND 17 2/2 010 11
A17
A17

1.0 B G1
A3
A4
C1
C2
B7

B8

C2
C1

NC 18 12
3
2
4

1
2
1

2
4
M

FET
1
3

BLOWER BLOWER
MOTOR RELAY

20KB-95100-01 1OF2

4-4-1
 1

8
7
6
5
4
3
2
NO.

Service Tool
AC 24V

CAN2_Hi

RS232_TX
AC GND

CAN_Hi
IG 24V

RS232 P_DUMP
CAN2_Lo

RS232_RX
GND
CAN_Lo
AC COMP
BLOWER SIG.

ILLUMINATION

B
E

A
H

C
D
G
AIR-CON
REVERSE FAN SIG
AC CONTROLLER B+
DESTINATION

AC CONDENSOR FAN

0.75B
0.75V

0.75R
0.75G
0.75G
0.75G
0.75G
0.75G

0.75BW
- MACHINE SERIAL NO. : #01186-

1
2
3
4
5
6
7
8
9
10
CN-126
5
4
3
1

8
7
6
2
CN-11

1.0 V 69

0.75B 71
0.75R 70
0.75G 68
0.75L(sh) 8
0.75Y(sh) 7

0.75BW 72
0.75G(sh) 6
0.75G(sh) 5
2.0 L 148
0.75LY 91

1.0 G 150

1.0 GW 43
2.0 B G17

1.0 G 3001
2.0 RW 147

5-08
5-07
5-06
5-05
5A-26

5A-30
CN-5, 5A
5A-33

5A-37
5A-35
5A-34
5B-10
5A-32
CN-5A

CN-51 CN-5, 5A, 5B

1.5 RY 88
BATT POWER_24V 1 5A-25
1.0 V 69
KEY IG 24V 2 5A-26
1.0 ROr 89
SENSOR 24V 3 5A-27
1.0Y
ENG. SPEED INPUT+ 4 5A-01
1.0 B 55
GND(5V) 5 5A-28
1.0 Gr 53
POWER_5V OUT 6 5A-29
0.75V
GOV MOTOR+ 7 5A-02
0.75G
GOV MOTOR- 8 5A-03
0.75W
STRAIGHT TRAVEL SOLENOID 9 5A-04
0.75WY 90
ARM IN OILOT PRESSURE 10 5A-05
1.0 B 63A
GND_MAIN 11 5A-30
1.0 B 20A
CAN_SHIELD 12 5-25
0.75BW 81
GROUND (SENSOR) 13 5A-31
0.75BW 172
SPEED SENSOR + 14 5A-06
0.75GrW 164
SPEED SENSOR - 15 5A-07
0.75BW 72
PROGRAM DUMP 16
0.75GrW 64
ONE TOUCH DECEL SIG 17 5A-08
0.75Y 62
POWER BOOST SW 18 5A-09

4-4-2
0.75YL 35
HOUR METER 19 5A-10
1.0 GrR 127
ANTI RESTART RY 20 5A-11
0.75L(sh) 8A
CAN #1 Hi 21 5-08
0.75V(sh) 6B
CAN #2 Hi 22 5-06
RS485 TX 23
0.75R 70
RS232 #1 TX 24
RS232 #2 TX 25
0.75YR 50A
FINE SWING SELECTION SW 26 5A-41
0.75YW
ENG. OIL PS 27 5A-42
0.75G
COOLANT WATER LEVEL 28 5A-43
1.0 YBr 83
AIR CLEANER CLOGGING SW 29 5A-44
0.75LY 91
A/C BLOWER STATE 30
0.75Y(sh) 7A
CAN #1 Lo 31 5-07
0.75G(sh) 5B
CAN #2 Lo 32 5-05
RS485 RX 33
0.75G 68
RS232 #1 RX 34
RS232 #2 RX 35
0.75G 66B
SAFETY LEVER S/W 36 5A-49
0.75OrW 92
ARM OUT PILOT PRESSURE 37 5A-50
0.75WY
OPTION PILOT PRESSURE SW 38 5A-51
1.0 L 93
N1 PRESSURE 39 5A-52
1.0 Gr 94
N2 PRESSURE 40 5A-53

CN-52
ARM REGEN SOL 1
1.0 P 95
POWER BOOST SOL 2 5B-02
1.0 B 108
TAVEL SPEED SOL 3 5B-03
0.75Br 158
ATT. SAFETY SOL 4 5B-04
0.75LOr 120
ATT. PRESSURE SOL 5 5B-05
0.75GW 177
ATT. CONFLUX SOL 6 5B-06
0.75RG 96
BOOM PRIORITY EPPR(+) 7 5B-27
1.0 Y 97
EPPR POWER 24V 8 5B-25
1.0 RW 98
PUMP SHIFT EPPR+ 9 5B-28
0.75Br 99
ATT. FLOW EPPR1(+) 10 5B-29
0.75L 402
REVERSE FAN SOL 11 5B-07
0.75L 102
FUEL WARMER RELAY 12 5B-08
0.75BrB 103
TRAVEL BUZZER 13 5B-09
1.0 G 3001
REVERSE FAN SIG 14 5B-10
0.75VW
PREHEAT RELAY 15 5B-11
0.75Y 104
ATT. FLOW EPPR2(-) 16 5B-30
0.75VW 105
BOOM PIORITY EPPR(-) 17 5B-31
0.75B 106
GROUND(EPPR) 18 5B-26
1.0 V 107
PUMP SHIFT EPPR- 19 5B-32
0.75BW 130
ATT. FLOW EPPR1(-) 20 5B-33
1.0W 279
COOLING FAN EPPR(+) 21 5B-41
1.0 LOr 271
COOLING FAN EPPR(-) 22 5B-42
0.75W 179
ACCEL DIAL SIG. 23 5B-43
1.0 LOr 101
HYD. OIL TEMP SENDOR 24 5B-44
0.75W
ENG. COOLANT TEMP 25 5B-45
1.0 YW 100
FUEL LEVEL SENDOR 26 5B-46
0.75W 110
ALT VOLTAGE 27 5B-47
0.75Gr 135
ARM IN/OUT BUCKET IN PRESSURE 28 5B-48
0.75G 111
P1 PRESSURE SENSOR 29 5B-49
0.75OrW 112
P2 PRESSURE SENSOR 30 5B-50
0.75R 113
BUCKET OUT PILOT PRESSURE 31 5B-51
0.75WR 114
PUMP EPPR 2ND PRESSURE SENSOR 32 5B-52
0.75V 115
ATT. PILOT PRESSURE 33 5B-53
0.75BR 132
BOOM DOWN PILOT PRESSURE 34 5B-54
0.75LgR 117
BOOM UP PILOT PRESSURE 35 5B-55
0.75LgW 118
SWING PILOT PRESSURE 36 5B-56
0.75LgY 119
WORKING PILOT PRESSURE 37 5B-57
0.75LW 133
TRAVEL PILOT PRESSURE 38 5B-58
0.75LG 121
OVERLOAD PRESSURE 39 5B-59
0.75GrW 122
HARNESS RH SIDE

ATT. FLOW EPPR2(+) 40 5B-34

20KB-95100-01 2OF2
MEMORANDUM

4-5
1. POWER CIRCUIT
The negative terminal of battery is grounded to the machine chassis directly.
When the start switch is in the OFF position, the current flows from the positive battery terminal as
shown below.

1) OPERATING FLOW
Battery Battery relay [CR-1] Fuse [CN-60] Master switch [CS-74A]
Fuse box [No.3] Power relay [CR-35 (30)]
Fuse box [No.4] MCU [CN-51 (1)]
Fuse box [No.5] I/conn [CN-5 (59)] l/conn [CN-10 (3)] Room lamp [CL-1 (2)]
Door switch [CS-1]
Radio & USB player [CN-27A (8)]
Fuse box [No.6] Master switch [CS-74B] l/conn [CN-5 (36)] Start switch [CS-2A(1)]
RMS [CN-125A (1)]
GPS connection [CN-125 (1)]
Fuse box [No.7] l/conn [CN-11 (5)] AC & Heater controller box (A)
Blower relay (4)
Fuse box [No.8] I/conn [CN - 5 (18)] I/conn [CN -17 (5)] Wiper motor controller
[CN-141 (7)]
Wiper motor [CN-21 (4)]
Fuse box [No.9] I/conn [CN - 5 (11)] Cluster [CN -56A (1)]
Hour meter [CN-48 (1)]
※ I/conn : Intermediate connector

2) CHECK POINT

Engine Start switch Check point Voltage

① - GND (battery 1EA) 10~12.5V
② - GND (battery 2EA) 20~25V
STOP OFF
③ - GND (battery relay) 20~25V
④ - GND (fuse) 20~25V
※ GND : Ground

※ The circuit diagram may differ from the equipment, so please check before a repair.
4-6
 CN-141
R
CONTINUE 24V 7 3.0R CR-35
30
1.0G 87a 87 85
CN-17 86
CS-74 30.RW

CONTROLLER
CN-21 1 87

WIPER MOTOR
1.0B
3 1 2 85
87a 30 86

POWER RY
2 3

1
2
5 3 4
R R 1.0R
4 5

CS-74B
4
5 6 CN-36

h
2.0W
2.0W

MASTER SW
6 2 6 7
POWER CIRCUIT

M 3.0 R 30A 4.0R

WIPER MOTOR
IG POWER
3

2
3

1
8

CN-48
1.5 RY MCU 30A
4
0.75Y ROOM LAMP/CASSETTE 10A 6.0R

0.75R
5
2.0 W START KEY 30A
CN-5 6
CN-427 2.0 RW AIR CON/HEATER 20A
0.8W 1 7

0.75R
IG 24V 1 1.0 R WIPER MOTOR 10A 6.0R
2 8
GND 2 1.0 R CLUSTER 10A

9
8
7
6
5
4
3
2
1

12
11
10
10 9
CAN (HIGH) 3 1.0R 1.0R FUEL CUT OFF SOL 10A

CN-56A
11 10

READER
L
L
L
L
L
Y
B
CAN (LOW)

W
4 10A

Gr
CLUSTER

WL
WR
RW
12 11
CN-125A MCU CONT. 20A
13
2.0RW

1.5W 12
BATTERY POWER 1 MCU_EPPR 20A
14 13
1.2G
6.0R

IG 24V
10A

RMS
SWITCH PANEL

GND
KEY "IG" 2 15

BATT.24V

CAN2_HI
CAN1_HI

RS-232 TX
RS-232 RX

AUX LEFT
CAN1_LO

AUX GND
CAN2_LO

AUX RIGHT
14

CLUSTER
16 CASSETTE 10A
15
2.0RW

17 PVG CONT. 10A

1.0R 1.0R 16
CS-2A 18 START. STOP 30A 6.0W
1.5W 19 17
1 WORK LAMP 30A

H0 I
1.0YOr 34 18
2 CABIN LAMP(OPTION) 30A

0, I
35 19

H
4 3 2.0W 2.0W WIPER 10A
36 20

B
2 1 4 20A

1.0G
WORK LAMP

1.0W
3
37 21
5 30A

4-7
BR ACC
38
FUEL HEATER 6.0W
22

START KEY SW
6 1.0YBr 1.0YBr
20A

3
4
1
2
39 START,AIR HEAT
5 1.0G 1.0G 23
10A

ST C
6 40 HORN

CN-125

2
24

4
1

3
41 AC& HEATER 20A
CN-27A 0.75Y

GPS CONN
0.75Y 25
59 10A

R
SAFETY SOL
ACC 1 26
60 SEAT 20A 6.0W
ILL- 2 27
SWITCH 20A
NC 3 28
1.0YBr

1.0YBr CIGAR 10A

SPK FRT RH- 4 29
OPTION,SWITCH 20A
1
2
SPK FRT LH- 5
30
15A
DO-3

TEL MUTE 6 SOLENOID

CR-1

31
10A
3

ANT 12V 7 CONVERTER

BATT RY

0.75Y 32
BACK UP+ 8 FUEL P/P 20A 6.0W

RADIO & USB PLAYER

33
ILL+ 9 AAVM / SIREN 10A
34

0.75Y
BREAKER 10A
2

35

5
4
1

9
8
7
6
3

12
11
10
60R

CN-10
CN-11
FUSE BOX

1
80A

40A

2
3 CS-74A
FUSE

1.0Gr
(12VX2)

6.0R

1.0Gr
BATTERY

※ The circuit diagram may differ from the equipment, so please check before a repair.
0.75Y
4 1
1A 2.0RW
1
2

1
2

BATTERY(+) 7 5 6.0W

1
2
CS-1
2
CS-74

CN-60
CN-95

CL-1
60B

6
1
MASTER SW
6.0W

CONTROL BOX(A)
6.0R
6.0W
6.0W

6.0W

DOOR SW
8
1 2

ROOM LAMP
1
2 CN-51 1.5RY
3 BATT POWER_24V 1 CN-258
4

4.0W

MCU
3 4 4 1

AC & HEATER BLOWER RY

AIR COMP POWER

300S4EL05
2. STARTING CIRCUIT
1) OPERATING FLOW
Battery (+) terminal Battery relay [CR-1] Fuse [CN-60] Master switch [CS-74A]
Fuse box [No.5] Master switch [CS-74B] I/conn [CN-5 (36)] Start switch [CS-2A (1)]
Power relay [CR-35 (30)]
(1) When start switch is in ON position
Start switch ON [CS-2A (2)] I/conn [CN-5 (39)]
Battery relay [CR-1] Battery relay operating (all power is supplied with the electric component)
Start switch ON [CS-2A (3)] GPS conn [CN-125 (2) → (4)]
I/conn [CN-5 (40)] Power relay [CR-35 (86) → (87)]
Fuse box [No.11] MCU [CN-51 (1)]
Fuse box [No.10] I/conn [CN-1 (5)]
Fuel cut off solenoid [CN-79 (H)]
Reader [CN-427 (1)]
RMS [CN-125A (2)]
(2) When start switch is in START position
Start switch START [CS-2A (6)] I/conn [CN-5 (35)] Anti-restart relay [CR-5 (86) → (87)]
l/conn CN-2 (2) Start relay [CR-23] Starter motor operating
l/conn [CN-1 (8)] Fuel cut off solenoid [CN-79(F)]

2) CHECK POINT
Engine Start switch Check point Voltage
① - GND (battery)
② - GND (start switch)
③ - GND (battery relay M4)
OPERATING START ④ - GND (starter B+) 20~25V
⑤ - GND (starter M)
⑥ - GND (start relay)
⑦ - GND (battery relay M8)

※ The circuit diagram may differ from the equipment, so please check before a repair.
4-8
 CN-51
1.0GrR
ANTI RESTART RY 20

MCU
CN-125 CN-125 CN-5
77 R 1.0G
4 4 1
3 3 2
77 R 1.0R
2 2 3
1.0W CR-35
3.0R

GPS CONN
1 1 4
30
5 1.0G 87a 87 85
CS-74 86
6 3.0RW
CN-427 0.8W 87
7 1.0B
IG 24V 1 85
8 87a 30 86
POWER RY
GND 2

1
2
CAN (HIGH) 3
9

CS-74B

READER
CAN (LOW) 17
4

2W
2W
18

MASTER SW
19
CN-36
CN-125A 3.0 R 30A
1.5W 20 IG POWER 4.0R
1 3
STARTING CIRCUIT

BATTERY POWER
1.5G 21 MCU 30A
KEY "IG" 2

RMS
4
22 ROOM LAMP/CASSETTE 10A 6.0R
5
23 2.0 W START KEY 30A
24 6
AIR CON/HEATER 20A
33 7
6 WIPER MOTOR 10A 6.0R
5

ST C
CS-2A 34 8
1.2BOr 1.0BR 1.0BR CLUSTER 10A
6 35 9
2.0W 2.0W 1.0 Br FUEL CUT OFF SOL 10A
3 5 36 10
2 10A

BR ACC
1 4 37 CLUSTER
1.0R 11
1.0V MCU CONT. 20A

H
4 3 38
2.0RW

1.0YOr 1.0YBr 1.0YBr 12

MCU_EPPR 20A

0, I
2 39
1.5W 1.0G 1.0G 13
6.0R

10A

START KEY SW
1 40 SWITCH PANEL

H 0 I
14
41 CASSETTE 10A
15
2.0RW

57 10A
PVG CONT.

2
58 16
2.0 Y START. STOP 30A 6.0W
59 17
WORK LAMP 30A
60 18
CN-51 CABIN LAMP(OPTION) 30A
1.0V 19
KEY IG 24V 2 WIPER 10A

4-9
MCU
20
WORK LAMP 20A
CN-2 21
FUEL HEATER 30A 6.0W
1.2L 1.0L 22
4 2.0Y START,AIR HEAT 20A
23
HORN 10A
1.0L

2.0Y
1.0Y

24
2.0W
0.75Y

1.0GrB
1.0BR

2.0W AC& HEATER 20A

0.75BR

1.2LOr 25
2 10A

3
SAFETY SOL
4
2
3

5
1

1.2B 1.0B
85
86
87
30

26
CR-5

1
87a

SEAT 20A 6.0W

CR-36

1.2WOr 0.75W
27

1.0YBr
3
SWITCH 20A
1.0B 28

1.0B
CIGAR 10A
3 2
4 5 1

1.0YBr
29
30 86
87a 87 85
PRE-HEAT RY

OPTION,SWITCH 20A

2
1
30
ANTI-RESTART RY

6
CR-1

1.2L
15A

RS-1A
RS-1B
SOLENOID
DO-3

1.2B
31

1.2LOr
DIODE
CONVERTER 10A
BATT RY
7

32
20A 6.0W

5W/100
5W/100
1
2
FUEL P/P
33

2
2

1
1
CN-1 AAVM / SIREN 10A
34
1 BREAKER 10A

1.2B
1.2B
2.0W 2.0W 35

1.2WOr
1.2WOr
8

CR-23

CR-24
2.0B

2W
2.0B

2B

1.2LW

START RY
FUSE BOX

14

PRE-HEAT RY

※ The circuit diagram may differ from the equipment, so please check before a repair.
1
80A

40A

1.2LOr 1.0Br

15R
15R
4
F
H
G
5
60R

1.2WOr
CS-74A
FUSE

CN-79
6.0R

15 R
1
1
2

1
2

6.0W

5
2
CS-74

CN-60
CN-95

4
3
2
1
MASTER SW

FUEL CUT OFF SOL

(12V X 2)
6.0W

L
BATTERY

FI
P
B+

CN-80
6.0R

B+

NC
6.0W
6.0W

6.0W

CN-45

CN-74

ALTERNATOR

PRE-HEATER
3~
60B

M
CN-52

U
0.75W

STARTER
ALT VOLTAGE 27 CN-258
0.75BR 4.0W
PREHEATER RELAY 15

MCU
1

AIR COMP POWER

300S4EL06
3. CHARGING CIRCUIT
When the starter is activated and the engine is started, the operator releases the start switch to the
ON position.
Charging current generated by operating alternator flows into the battery through the battery relay
[CR-1].
The current also flows from alternator to each electrical component and controller through the fuse box.
1) OPERATING FLOW
(1) Warning flow
Alternator [CN-74 (2)] I/conn [CN-2 (3)] MCU alternator voltage [CN-52 (27)]
Cluster charging warning lamp (Via CANbus interface)

(2) Charging flow

Alternator [CN-74 (B+)] Battery relay(M8)
Battery (+) terminal
Fuse [CN-60] Master switch [CS-74A] Fuse box [No.3~9]
Fuse [CN-95] Fuse box [No.17~35]
Air compressor power [CN-258 (1)]

2) CHECK POINT

Engine Start switch Check point Voltage

① - GND (battery voltage)
② - GND (battery relay)
RUN ON ③ - GND (alternator B+ terminal) 20~25V
④ - GND (alternator 2 terminal)
⑤ - GND (MCU)
※ GND : Ground

※ The circuit diagram may differ from the equipment, so please check before a repair.
4-10
 1.0R
0.75B
0.75B
0.75R

0.75L

0.75RB
0.75RB

0.75Y

0.75L
0.75Y
9
8
7
6
5
4
3
2
1

12
11

5
4
1

9
8
7
6
10

60
59
58
57
24
23
22
21
20
19
11
10
CN-36

CN-5
CN-56A
30A 4.0R

L
L
L
L
L
IG POWER

Y
B

W
Gr
3

WL
WR
RW
30A

1.0R
MCU

0.75L
0.75B
0.75Y
4

0.75RB
ROOM LAMP/CASSETTE 10A 6.0R
5
START KEY 30A

IG 24V
GND
6

BATT.24V

CAN2_HI
CAN1_HI

RS-232 TX
RS-232 RX

AUX LEFT
CAN1_LO

AUX GND
CAN2_LO

AUX RIGHT
CN-51 AIR CON/HEATER 20A

CLUSTER
7
CHARGING CIRCUIT

BATT POWER_24V 1 WIPER MOTOR 10A 6.0R

8
KEY IG 24V 2 1.0R CLUSTER 10A
SENSOR 24V 3 9
FUEL CUT OFF SOL 10A
ENG. SPEED INPUT+ 4 10
0.75RB CLUSTER 10A
GND(5V) 5 11
MCU CONT. 20A
POWER_5V OUT 6 12
GOV MOTOR+ 7 MCU_EPPR 20A
13
6.0R

GOV MOTOR- 8 SWITCH PANEL 10A

14
STRAIGHT TRAVEL SOLENOID 9 CASSETTE 10A
10 15
PVG CONT. 10A
16
0.75L START. STOP 30A 6.0W
CAN #1 Hi 21 17
WORK LAMP 30A
CAN #2 Hi 22 18
RS485 TX 23 CABIN LAMP(OPTION) 30A
19
RS232 #1 TX 24 WIPER 10A
RS232 #2 TX 25 20
WORK LAMP 20A
FINE SWING SELECTION SW 26 21
FUEL HEATER 30A 6.0W
ENG. OIL PS 27 22
START,AIR HEAT 20A
COOLANT WATER LEVEL 28 23
AIR CLEANER CLOGGING SW HORN 10A

4-11
29

1.0B
24

0.75W
A/C BLOWER STATE 30 AC& HEATER 20A
0.75Y
CAN #1 Lo 25
31 SAFETY SOL 10A

2
1

3
CAN #2 Lo 32 26
SEAT 20A 6.0W

CN-2
33 27
SWITCH 20A
28

1.2B
CN-52 CIGAR 10A

1.2LOr
29

1.2WOr
20A

MCU
ARM REGEN SOL 1 OPTION,SWITCH
30

1.0B
1.0B
POWER BOOST SOL 2 SOLENOID 15A
31
TAVEL SPEED SOL 3 CONVERTER 10A

RS-1A
RS-1B
1
2
32

1.2B
ATT. SAFETY SOL 4 20A 6.0W

1.2LOr
FUEL P/P
CR-1

DO-3
ATT. PRESSURE SOL 5 33
AAVM / SIREN 10A
2

ATT. CONFLUX SOL 6 BATT RY

5W/100
5W/100
34

1
2

2
2
10A

1
1
22 BREAKER
35
ACCEL DIAL SIG. 23

1.2B
1.2B
HYD. OIL TEMP SENDOR 24
FUSE BOX

1.2WOr
1.2WOr
CR-23
ENG. COOLANT TEMP 25
80A

40A

FUEL LEVEL SENDOR

60R

26

START RY
0.75W
ALT VOLTAGE 27 CS-74A
6.0R
FUSE

GOV MOTOR POTENTIONMETER 28 1

1
2

5
1
2

P1 PRESSURE SENSOR 29 6.0W

※ The circuit diagram may differ from the equipment, so please check before a repair.
15 R

4
2
CS-74

CN-60
CN-95

1.2WOr
P2 PRESSURE SENSOR 30
(12VX2)
BATTERY

BUCKET OUT PILOT PRESSURE 31

MASTER SW
6.0W

4
3
2
1
6.0R
6.0W
6.0W

6.0W

PUMP EPPR 2ND PRESSURE SENSOR 32

3
60B

ATT. PILOT PRESSURE

L
33

FI
P
B+

B+

NC
BOOM DOWN PILOT PRESSURE 34

CN-45

CN-74
BOOM UP PILOT PRESSURE 35

3~
SWING PILOT PRESSURE 36 CN-258

G
4.0W

U
1

STARTER
WORKING PILOT PRESSURE 37
TRAVEL PILOT PRESSURE 38 AIR COMP POWER
OVERLOAD PRESSURE 39
ATT. FLOW EPPR2(+) 40

300S4EL07
ALTERNATOR
4. HEAD AND WORK LIGHT CIRCUIT
1) OPERATING FLOW
Fuse box (No.21) Head light relay [CR-13 (30, 86)]
Fuse box (No.18) Work light relay [CR-4 (30, 86)]
Fuse box (No.14) Membrane controller [CN-376 (1)]

(1) Head light switch ON

Head light switch ON [CN-376 (13)] Head light relay [CR-13 (85) → (87)]
Head light ON [CL-3 (2), CL-4 (1), CL-24 (2)]
l/conn [CN-5 (41)] I/conn [CN-432 (1)] Cigar lighter [CL-2]
l/conn [CN-5 (60)] Radio & USB player illumination ON [CN-27A (9)]
l/conn [CN-7 (1)] Accel dial LED [CN-279 (2)]

(2) Work light switch ON

Work light switch ON [CN-376 (4)] Work light relay [CR-4 (85) → (87)]
l/conn [CN-12 (1)] Work light ON [CL-5 (2), CL-6 (2)]

2) CHECK POINT
Engine Start switch Check point Voltage
① - GND (fuse box)
② - GND (switch power input)
③ - GND (head light relay)
④ - GND (head light)
STOP ON 20~25V
⑤ - GND (fuse box)
⑥ - GND (switch power output)
⑦ - GND (work light relay)
⑧ - GND (work light)
※ GND : Ground

※ The circuit diagram may differ from the equipment, so please check before a repair.
4-12
 NC
NC
NC

NC
NC
NC
NC

NC

GND
GND
IG 24V

WIPER
ACCEL DIAL LED

WASHER
CAN_HI(2)

INT WIPER

CAN_LO(2)
HEAD LIGHT
CABIN LIGHT
WORK LIGHT
TRVEL ALARM

OVERLOAD SW

1
2
BEACO LAMP SW
CN-36

CN-279
IG POWER 30A
3
MCU 30A

0.75B
9
8
7
6
5
4
3
2
1
4

34
27
26
19
18
17
16
15
14
13
12
11
10

0.75ROr
ROOM LAMP/CASSETTE 10A

CN-376
5

MEMBRANE CONTROLLER
START KEY 30A
6
20A

0.75B
0.75B
AIR CON/HEATER
7

0.75WY

0.75YBr
WIPER MOTOR 10A

6
6
0.75L
2
8
CLUSTER 10A

5
4
2

9
8
7
6
3
1
9

12
11
10
FUEL CUT OFF SOL 10A

CN-7
10
CLUSTER 10A
11
20A

1.5B
MCU CONT.

1.0GW
12
MCU_EPPR 20A
CN-5 13
0.75L SWITCH PANEL 10A
1 14
CASSETTE 10A
2 15
PVG CONT. 10A
3
4
1 START. STOP 30A
16
17
2.0RW WORK LAMP 30A
5 18
CABIN LAMP(OPTION) 30A
HEAD AND WORK LIGHT CIRCUIT

6 19
7 WIPER 10A

CL-2
20
8 2.0Br WORK LAMP 20A
21

CIGAR LIGHTER
1.5B
9 FUEL HEATER 30A
22

0.75ROr
10 START,AIR HEAT 20A
11 23
10A
1

HORN
12 24
AC& HEATER 20A
13 25
SAFETY SOL 10A
14 26
SEAT 20A
15

4-13
27

2
1

3
SWITCH 20A
16 28

CN-432
CIGAR 10A
17 29
OPTION,SWITCH 20A

1.5B
18
30
15A

0.75ROr
19 SOLENOID
31
20 CONVERTER 10A
2.0B 32
CN-27A 21 FUEL P/P 20A
0.75ROr 1.0GW 33
ACC 1 41 AAVM / SIREN 10A
34
ILL- 2 42 BREAKER 10A
3 35
NC 43
FUSE BOX

SPK FRT RH- 4 44

SPK FRT LH- 5 45
TEL MUTE 6 57
ANT 12V 7 58
4

1.0B
1.0B

1.0B

BACK UP+ 8 59
1.0GW
1.0GW

1.0GW
3

0.75GW 1.0GW 1.0GW

2.0Br
2.0Br

7
2.0RY
8

2.0RW
1.0GW

ILL+ 60

0.75WY
9
0.75RW
0.75YBr

2.0B

NC 10
2.0RY

SPK FRT RH+ 11

1
2

1
2

1
2
87
85
86
30

87
85
86
30
87a

CL-4

REMOCON+ 12

87a
CL-3

CR-4

RADIO & USB PLAYER

CR-13

CL-24

REMOCON GND
2

13
1

※ The circuit diagram may differ from the equipment, so please check before a repair.
30
87a 87

CN-12

SPK FRT LH+ 14

HEAD LAMP
HEAD LAMP
86
85

NC 15
30 86
87a 87 85

GND 16
WORK LAMP RY
HEAD LAMP REAR
HEAD LAMP RY

V
B
V
B

1
2
1
2

CL-6
CL-5

300S4EL08
WORK LAMP
5. BEACON LAMP AND CAB LIGHT CIRCUIT
1) OPERATING FLOW
Fuse box (No.30) Beacon lamp relay [CR-36 (2, 3)]
Fuse box (No.19) Cab light relay [CR-9 (30, 86)]
Fuse box (No.14) Membrane controller [CN-376 (1)]
(1) Beacon lamp switch ON
Beacon lamp switch ON [CN-376 (15)] Beacon lamp relay [CR-36 (1)→ (5)]
I/conn [CN-5 (50)] I/conn [CN-10 (10)] Beacon lamp ON [CL-7]
(2) Cab light switch ON
Cab light switch ON [CN-376 (5)] Cab lamp relay [CR-9 (85) → (87)]
I/conn [CN-5 (34, 38)] I/conn [CN-10 (11)] Cab light ON [CL-8 (2)]
I/conn [CN-10 (12)] Cab light ON [CL-9 (2), CL-10 (2)]

2) CHECK POINT
Engine Start switch Check point Voltage
① - GND (fuse box)
② - GND (beacon lamp relay)
③ - GND (switch power input)
④ - GND (beacon lamp)
STOP ON 20~25V
⑤ - GND (fuse box)
⑥ - GND (cabin light relay)
⑦ - GND (switch power output)
⑧ - GND (cab light)
※ GND : Ground

※ The circuit diagram may differ from the equipment, so please check before a repair.
4-14
BEACON LAMP AND CAB LIGHT CIRCUIT

FUSE BOX

11
10

12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
4
5
6
7
8
9
3

10A
30A
20A
10A
10A

10A
20A
20A
10A
10A
10A
30A
30A
30A
10A
20A
30A
20A
10A
20A
10A
20A
20A
10A
20A
15A
10A
20A
10A
30A
10A

10A
30A

CABIN LAMP(OPTION)
ROOM LAMP/CASSETTE

AIR CON/HEATER

FUEL CUT OFF SOL

START,AIR HEAT

OPTION,SWITCH
WIPER MOTOR

SWITCH PANEL

FUEL HEATER

AAVM / SIREN
START. STOP

AC& HEATER

CONVERTER
SAFETY SOL
WORK LAMP

WORK LAMP
MCU CONT.
START KEY

MCU_EPPR

PVG CONT.
IG POWER

CASSETTE

SOLENOID
CLUSTER

BREAKER
CLUSTER

FUEL P/P
SWITCH
WIPER

CIGAR
HORN

SEAT
CN-36

MCU

1.0Or
2

2.0R
0.75L
5 1 1 CR-36
0.75RW
1
1.0Or 4 5 1
2
3 1.0Or
3
4
CN-376 1.0BrW
3 2
0.75L 5
IG 24V 1
2
BEACON LAMP RY
TRVEL ALARM
WIPER 3
6
WORK LIGHT 4
0.75RW
CR-9
2.0R
CABIN LIGHT 5 30
0.75R 87a 87 85
NC 6 86
2.0VW
OVERLOAD SW 7 87
0.75RW
NC
NC
8
9
7 85
87a 30 86

CAN_HI(2) 10 CABIN LAMP RY

WASHER 11
INT WIPER 12
HEAD LIGHT 13
NC 14
0.75RW
BEACO LAMP SW 15
NC 16
NC 17

1.0BrW
1.0VW
2.0VW

1.0B

CAN_LO(2) 18
7
2.0B

NC 19
CN-5

28
29
30
31
32
33
34
35
36
37
38
39

49
50
51
52
53
56
57
58
59
60
0.75B
3

6
1

4
5
2

GND 26
0.75B 1.0BrW
GND 27
1.0B
1.0VW
2.0B

2.0VW

NC 34
MEMBRANE CONTROLLER

CN-10
1
2

4 3
4
5
CL-7 6
1.0BrW
BEACON 7
M 1.0B 2.0B 2.0B
LAMP 8
2.0B 1.0B
9
1.0BrW 1.0BrW
CL-8 10
2.0V 2.0V 2.0VW
2 11
2.0B 2.0V 2.0VW
1 12

CL-9
2.0V
CABIN 2
2.0B
LIGHT 1

CL-10
2.0V
2
2.0B
1

300S4EL09

※ The circuit diagram may differ from the equipment, so please check before a repair.
4-15
6. WIPER AND WASHER CIRCUIT
1) OPERATING FLOW
(1) Start switch ON
Fuse box (No.14) Membrance controller [CN-376 (1)]
Fuse box (No.8) I/conn [CN-5 (18)] I/conn [CN-17 (5)] Wiper motor controller [CN-141 (7)]
Wiper motor [CN-21 (4)]
Fuse box (No.20) I/conn [CN-5 (16)] l/conn [CN-17 (4)] Wiper motor controller [CN-141 (6)]
Washer pump [CN-22 (2)]
(2) Wiper switch ON (Intermittent)
Wiper switch ON [CN-376 (12)] I/conn [CN-5 (20)] I/conn [CN-17 (8)]
Wiper motor controller [CN-141 (10)→(3)] Wiper motor [CN-21 (6)] Intermittently operating
(3) Wiper switch ON (continual)
Wiper switch ON [CN-376 (3)] I/conn[CN-5 (15)] I/conn[CN-17 (2)]
Wiper motor controller [CN-141 (2) → (4)] Wiper motor [CN-21 (2)] Continual operating
(4) Washer switch ON
Washer switch ON [CN-376 (11)] I/conn [CN-5 (17)] I/conn [CN-17 (7)]
Wiper motor controller [CN-141 (9) → (8)] I/conn [CN-17 (6)] I/conn [CN-5 (19)]
Washer pump [CN-22 (1)] Washer operating
Wiper switch ON [CN-376 (3)] I/conn[CN-5 (15)] I/conn[CN-17 (2)]
Wiper motor controller [CN-141 (2) → (4)] Wiper motor [CN-21 (2)] Continual operating
(5) Auto parking (when switch OFF)
Switch OFF [CN-376 (3)] Wiper motor parking position by wiper motor controller
3) CHECK POINT
Engine Start switch Check point Voltage
① - GND (fuse box)
20~25V
② - GND (switch power input)
③ - GND (switch power output)
STOP ON 0 ~ 5V
④ - GND (wiper switch power input)
⑤ - GND (wiper power output) 24V
⑥ - GND (wiper motor) 0 or 24V
※ GND : Ground

※ The circuit diagram may differ from the equipment, so please check before a repair.
4-16
 NC
NC
NC

NC
NC
NC
NC

NC

GND
GND
IG 24V

WIPER

WASHER
CAN_HI(2)

INT WIPER

CAN_LO(2)
HEAD LIGHT
CABIN LIGHT
WORK LIGHT
TRVEL ALARM

OVERLOAD SW

BEACO LAMP SW
9
8
7
6
5
4
3
2
1

34
27
26
19
18
17
16
15
14
13
12
11
10
CN-376

MEMBRANE CONTROLLER

6
3
CN-21

0.75L
0.75L

3
0.75GR
CS-53

0.75YBr
3 1
R Or
2
Gr
5 3
R
4 CN-5
4 G B CN-36
5 1
L
WIPER AND WASHER CIRCUIT

30A

WIPER CUT SW
2 6 2 IG POWER
6 M 3

WIPER MOTOR
3 MCU 30A
4
14 ROOM LAMP/CASSETTE 10A
0.75GR 0.75GR 5
15 START KEY 30A
1.0RY 1.0B
16 6
20A

4
0.75L 0.75L AIR CON/HEATER
17 7
1.0R 1.0R 1.0R WIPER MOTOR 10A
CN-141 18 8
G 1.0V 1.0V CLUSTER 10A
FEED BACK 1 19 9
W 0.75YBr 0.75YBr 10A
MOTOR DRIVE SIG 2 CN-17 20 FUEL CUT OFF SOL
10
1

L 1.0B 1.0B
MOTOR DRIVE- 3 1 21 CLUSTER 10A
R W 0.75GR 11
MOTOR DRIVE+ 4 2 22 MCU CONT. 20A
B B 1.2B 12
GND

4-17
5 3 MCU_EPPR 20A
GrW GrW 1.0RY 13
VCC 6 4 0.75L SWITCH PANEL 10A
R R 1.0R
CONTINUE 24V 7 5 14
V V 0.75V CASSETTE 10A
WASHER P/P 8 6 15
L L 0.75L PVG CONT. 10A
WASHER SIG. 9 7 16
1

Br Br 0.75YBr START. STOP 30A

INT. SIG 10 8 17
Or 30A
WIPER CUT SW 11 WORK LAMP
18
N.C 12 CABIN LAMP(OPTION) 30A

WIPER MOTOR CONTROLLER

Gr 19
FEED BACK 13 1.0RY WIPER 10A
20
WORK LAMP 20A
21

5
FUEL HEATER 30A
22
1

START,AIR HEAT 20A

23

4
HORN 10A
24
AC& HEATER 20A
25
SAFETY SOL 10A
26
SEAT 20A
27
SWITCH 20A
28
CIGAR 10A
29
OPTION,SWITCH 20A

※ The circuit diagram may differ from the equipment, so please check before a repair.
30
SOLENOID 15A
31
1.0V
1.0V

10A
1.0RY
1.0RY

CONVERTER 32
FUEL P/P 20A
33
2
1
2
1

AAVM / SIREN 10A

34
DO-5
CN-22

10A
DIODE

BREAKER
M

35
FUSE BOX

WASHER PUMP

300S4EL10
 3
6

-
+

S
M

2
5

ACCEL DIAL
B
A

C
CN-142
P-
M-

NC

P+
M+

SIG

0.75B
0.75W
0.75Gr
1
2
3
4
5
6
CN-76

GOV. MOTOR

5
4
1

9
8
7
6
3

12
11
10
CN-51

CN-7
1.5RY
BATT POWER_24V 1
1.0V

1.0 B
0.75V

RH CONSOLE
0.75G
KEY IG 24V 2

0.75Gr
0.75WY
SENSOR 24V 3

1.0B
CN-36

1.0Gr
0.75W
ENG. SPEED INPUT+ 4
1.0B IG POWER 30A
GND(5V) 5 3
1.0Gr 1.5RY 30A
POWER_5V OUT 6 MCU
0.75V 4
GOV MOTOR+ 7 ROOM LAMP/CASSETTE 10A
0.75G 5
GOV MOTOR- 8 30A
START KEY
STRAIGHT TRAVEL SOLENOID 9 6
AIR CON/HEATER 20A
10 7
CONTROLLER CIRCUIT

WIPER MOTOR 10A

0.75L 8
CAN #1 Hi 21 CLUSTER 10A
9
CAN #2 Hi 22 FUEL CUT OFF SOL 10A
RS485 TX 23 10
CLUSTER 10A
RS232 #1 TX 24 11
RS232 #2 TX 1.0V MCU CONT. 20A
25
12
FINE SWING SELECTION SW 26 1.0Y MCU_EPPR 20A
ENG. OIL PS 13
27 SWITCH PANEL 10A
COOLANT WATER LEVEL 28 14
CN-126 CASSETTE 10A
AIR CLEANER CLOGGING SW 29 15
A/C BLOWER STATE 10 PVG CONT. 10A
30 0.75Y 16
CAN #1 Lo 31 9 J IG 24V START. STOP 30A
CAN #2 Lo H 17
32 8 CAN2_Lo 30A
WORK LAMP
33 7 G CAN2_Hi 18
0.75Y 0.8G CABIN LAMP(OPTION) 30A
6 F CAN_Lo 19
0.75L 0.8V WIPER 10A

MCU
5 E CAN_Hi 20
CN-52 WORK LAMP 20A
4 D GND 21
ARM REGEN SOL 1 FUEL HEATER 30A

4-18
Service Tool

3 C RS232_TX 22
POWER BOOST SOL 2 20A
2 B RS232_RX
START,AIR HEAT
TAVEL SPEED SOL 3 23
HORN 10A

8
8
7
7
1 A RS232 P_DUMP

60
59
58
57
19

24
23
21
20

22
ATT. SAFETY SOL 4 24

CN-5
ATT. PRESSURE SOL 5 AC& HEATER 20A
25
ATT. CONFLUX SOL 6 SAFETY SOL 10A

0.75L
0.75Y
BOOM PRIORITY EPPR(+) 7 26
1.0Y SEAT 20A
EPPR POWER 24V 8 27
1.0RW SWITCH 20A
PUMP SHIFT EPPR+ 9 28
ATT. FLOW EPPR1(+) 10 CIGAR 10A
29
0.75L
0.75Y
NC 11 OPTION,SWITCH 20A
FUEL WARMER RELAY 12 30
SOLENOID 15A
TRAVEL BUZZER 13 31
9
8
7
6
5
4
3
2
1

12
11
10
CONVERTER 10A
ENGINE STOP RELAY 14 32
CN-56A

L
L
L
L
L

20A
Y
B

PREHEAT RELAY 15 FUEL P/P

Gr
WL
WR
RW

33
ATT. FLOW EPPR2(-) 16 AAVM / SIREN 10A
BOOM PIORITY EPPR(-) 17 34
BREAKER 10A
GROUND(EPPR) 18 35
IG 24V

1.0V
GND
BATT.24V

CAN2_HI
CAN1_HI

RS-232 TX
RS-232 RX

AUX LEFT
CAN2_LO
CAN1_LO

AUX GND
AUX RIGHT
FUSE BOX

PUMP SHIFT EPPR- 19

CLUSTER
ATT. FLOW EPPR1(-) 20
COOLING FAN EPPR(+) 21
COOLING FAN EPPR(-) 22 0.75W

※ The circuit diagram may differ from the equipment, so please check before a repair.
1.0V
ACCEL DIAL SIG. 23

1.0RW
HYD. OIL TEMP SENDOR 24
ENG. COOLANT TEMP 25

9
10
FUEL LEVEL SENDOR 26

CN-1
ALT VOLTAGE 27 0.75WY
GOV MOTOR POTENTIONMETER 28
P1 PRESSURE SENSOR 29

1.0Br
P2 PRESSURE SENSOR 30

1.0RW
BUCKET OUT PILOT PRESSURE 31

2
1
PUMP EPPR 2ND PRESSURE SENSOR 32
ATT. PILOT PRESSURE 33

CN-75
34

300S4EL11
EPPR V/V
 CN-51
BATT POWER_24V 1

GND
KEY IG 24V 2
SENSOR 24V 3

LVDS POS

LVDS NEG
ENG. SPEED INPUT+ 4

POWER 6.5V
GND(5V) 5

Pa
CD-10
POWER_5V OUT 6 CN-36

C 1
2
2
1
GOV MOTOR+ 7

1
2
3
30A

CD-2
IG POWER

HYD TEMP
GOV MOTOR- 8 3

CN-249

FUEL LEVEL
30A

REAR VIEW CAMERA

AIR CLEANER SW
MCU

CD-1 1.0B
STRAIGHT TRAVEL SOLENOID 9

1.0B
4

1.0B

1.0B
1.0LOr
1.0YBr
ROOM LAMP/CASSETTE 10A

1.0YW
ARM IN PILOT PRESSURE 10
1.0B 5

0.75R
0.75Br
30A

0.75RY
GND_MAIN 11

0.75BW
START KEY
12 6
AIR CON/HEATER 20A
7

1.0R

0.75Br
0.75L
0.75Y

0.75RY
0.75R
0.75L WIPER MOTOR 10A

0.75BW
0.75RB
0.75Br
CAN #1 Hi 21

0.75RY
0.75RY
8

0.75BW
1.0R CLUSTER 10A
CAN #2 Hi 22

9
8
1

24
23
22
14
13
12
11
10
9
10A

CN-5
RS485 TX 23 FUEL CUT OFF SOL

8
7
6
5
4
3
2
1
RS232 #1 TX 10
24 0.75RB CLUSTER 10A

CN-56B
11
MONITORING CIRCUIT

L
L
L
RS232 #2 TX

B
25

W
MCU CONT. 20A

WL
WR
RW

1.0R

0.75Br
0.75L
0.75Y
FINE SWING SELECTION SW

0.75RY
0.75R
26 12

0.75BW
0.75RB
MCU_EPPR 20A
ENG. OIL PS 27 13
COOLANT WATER LEVEL 28 SWITCH PANEL 10A
1.0YBr 14

CAM 2
CAM 1

CAM 3
AIR CLEANER CLOGGING SW 29 CASSETTE 10A

CAM 6.5V
CAM GND
15

CAM DIFF L
A/C BLOWER STATE

CAM DIFF H
30 0.75Y 10A

CLUSTER
CAM SHIELD
CAN #1 Lo
PVG CONT.
31 16
CAN #2 Lo START. STOP 30A
32 17
33 WORK LAMP 30A
18
CABIN LAMP(OPTION) 30A
19
CN-52 WIPER 10A
20

MCU
ARM REGEN SOL 1 WORK LAMP 20A
POWER BOOST SOL 2
21
FUEL HEATER 30A
TAVEL SPEED SOL 3 22
START,AIR HEAT 20A
ATT. SAFETY SOL 4 23
ATT. PRESSURE SOL 5 HORN 10A
24
ATT. CONFLUX SOL 6 AC& HEATER 20A
7
25

4-19
BOOM PRIORITY EPPR(+) SAFETY SOL 10A
EPPR POWER 24V 8 26
SEAT 20A
PUMP SHIFT EPPR+ 9 27
SWITCH 20A
ATT. FLOW EPPR1(+) 10 28
NC 11 CIGAR 10A
29
FUEL WARMER RELAY 12 OPTION,SWITCH 20A

8
6
7
4
3
2
1

9
5

12
11
10
TRAVEL BUZZER 13 30
15A

CN-9
ENGINE STOP RELAY 14
SOLENOID
31
CONVERTER 10A
PREHEAT RELAY 15 32

0.75Br

0.75RY
ATT. FLOW EPPR2(-) 16 FUEL P/P 20A
33
BOOM PIORITY EPPR(-) 17 AAVM / SIREN 10A
GROUND(EPPR) 18 34
BREAKER 10A
PUMP SHIFT EPPR- 19 35
0.75R

0.75L
0.75Y
0.75RB
FUSE BOX

ATT. FLOW EPPR1(-) 20

COOLING FAN EPPR(+) 21
9
8
7
6
5
4
3
2
1

12
11
10

COOLING FAN EPPR(-) 22

ACCEL DIAL SIG. 23 1.0LOr
CN-56A

L
L
L
L
L
Y
B

HYD. OIL TEMP SENDOR

W

24
Gr
WL
WR
RW

ENG. COOLANT TEMP 25 1.0YW

FUEL LEVEL SENDOR 26
ALT VOLTAGE 27

※ The circuit diagram may differ from the equipment, so please check before a repair.
IG 24V
GND

GOV MOTOR POTENTIONMETER 28

BATT.24V

CAN2_HI
CAN1_HI

RS-232 TX
RS-232 RX

AUX LEFT
CAN1_LO

AUX GND
CAN2_LO

AUX RIGHT

0.75LB
CLUSTER

P1 PRESSURE SENSOR 29

0.75RW
P2 PRESSURE SENSOR 30
BUCKET OUT PILOT PRESSURE 31

21
22
20
75
74
PUMP EPPR 2ND PRESSURE SENSOR 32
ATT. PILOT PRESSURE 33

CN-401
34

IGN 24V
IGN 24V

RS232_RX

AAVM
CLU VOUT POS
CLU VOUT NEG

300S4EL12
 CD-10 PRESS PRESS PRESS PRESS
A4 P1 P2 N2 N1
Pa

SIG

SIG

SIG
SIG
SIG

AIR CLEANER SW
SUPPLY
CD-2

RETURN

SUPPLY

SUPPLY
SUPPLY
SUPPLY
RETURN

RETURN
RETURN
RETURN
1

B
A

B
A

B
A
B
A
B
A
C

C
C
C

FUEL
2

CD-70

CD-71

CD-44
CD-42
CD-43

LEVEL
1
2
CN-75

EPPR V/V
CD-1
C 1
2

HYD TEMP
CS-99
1
7 8
2
3

9
7

4
13

15

10
11
12
CN-51

CN-1
4 1
BATT POWER_24V 1 2
5 3
KEY IG 24V 2
SENSOR 24V 3 6 4
5
ENG. SPEED INPUT+ 4 7 6
AIR-COMP SW

GND(5V) 5 8
POWER_5V OUT 6 9
9 10
GOV MOTOR+ 7 10
GOV MOTOR- 8
ELECTRIC CIRCUIT FOR HYDRAULIC (1/2)

STRAIGHT TRAVEL SOLENOID 9

ARM IN PILOT PRESSURE 10
CS-108
GND_MAIN 11
1
CAN_SHIELD 12 7 8
2
GROUND (SENSOR) 13
3
FAN SPEED INPUT+ 14
4 1
PULSE INPUT- 15 2
PROGRAM DUMP 5 3
16
ONE TOUCH DECEL SIG 17 6 4
5
POWER BOOST SW 18 7 6
HOUR METER 19 8
AUTO GREASE SW

ANTI RESTART RY 20 9
9 10
CAN #1 Hi 21 10
CAN #2 Hi 22
RS485 TX 23
RS232 #1 TX 24
CS-67
RS232 #2 TX 25
1
FINE SWING SELECTION SW 26 7 8
2
ENG. OIL PS 27
COOLANT WATER LEVEL 3
28
4 1
AIR CLEANER CLOGGING SW 29 2
A/C BLOWER STATE 30 5 3
CAN #1 Lo 31 6 4
5
CAN #2 Lo 32 7 6
QUICK CLAMP SW

RS485 RX 33 8
RS232 #1 RX 34 9
9 10
RS232 #2 RX 35 10
SAFETY LEVER S/W 36
ARM OUT PILOT PRESSURE 37
OPTION PILOT PRESSURE SW 38
N1 PRESSURE 39
N2 PRESSURE
CN-113
40
1
CN-52 2

MCU
ARM REGEN SOL 1
BUZZER
POWER BOOST SOL 2
6

9
8
7

10

12

55
54
53
52
31
30
29
28
27
26
25
24
23
11
CN-5

TAVEL SPEED SOL 3

ATT. SAFETY SOL 4
ATT. PRESSURE SOL 5
ATT. CONFLUX SOL 6 CN-140
BOOM PRIORITY EPPR(+) 7 2
EPPR POWER 24V 8 1

4-20
PUMP SHIFT EPPR+ 9
ATT. FLOW EPPR1(+) 10
QUICK CLAMP SOL

NC 11
FUEL WARMER RELAY 12
TRAVEL BUZZER 13
CN-36
ENGINE STOP RELAY 14
PREHEAT RELAY 15 IG POWER 30A
3
ATT. FLOW EPPR2(-) 16 MCU 30A
4
BOOM PIORITY EPPR(-) 17 ROOM LAMP/CASSETTE 10A
GROUND(EPPR) 5
18 START KEY 30A
PUMP SHIFT EPPR- 19 6
AIR CON/HEATER 20A
ATT. FLOW EPPR1(-) 20 7
WIPER MOTOR 10A
COOLING FAN EPPR(+) 21 8
CLUSTER 10A
COOLING FAN EPPR(-) 22 9
FUEL CUT OFF SOL 10A
ACCEL DIAL SIG. 23 10
HYD. OIL TEMP SENDOR CLUSTER 10A
24 11
ENG. COOLANT TEMP 25 MCU CONT. 20A
12
FUEL LEVEL SENDOR 26 MCU_EPPR 20A
13
ALT VOLTAGE 27 SWITCH PANEL 10A
GOV MOTOR POTENTIONMETER 14
28 CASSETTE 10A
P1 PRESSURE SENSOR 29 15
PVG CONT. 10A
P2 PRESSURE SENSOR 30 16
START. STOP 30A
BUCKET OUT PILOT PRESSURE 31 17
WORK LAMP 30A
PUMP EPPR 2ND PRESSURE SENSOR 32 18
CABIN LAMP(OPTION) 30A
ATT. PILOT PRESSURE 33 19
BOOM DOWN PILOT PRESSURE WIPER 10A
34 20

※ The circuit diagram may differ from the equipment, so please check before a repair.
BOOM UP PILOT PRESSURE 35 WORK LAMP 20A
21
SWING PILOT PRESSURE 36 FUEL HEATER 30A
22
WORKING PILOT PRESSURE 37 START,AIR HEAT 20A
TRAVEL PILOT PRESSURE 23
38 HORN 10A
OVERLOAD PRESSURE 39 24
AC& HEATER 20A
ATT. FLOW EPPR2(+) 40 25
SAFETY SOL 10A
26
SEAT 20A
27
SWITCH 20A
28
CIGAR 10A
29
OPTION,SWITCH 20A
30
SOLENOID 15A
31
CONVERTER 10A
32
FUEL P/P 20A
33
AAVM / SIREN 10A
34
BREAKER 10A
35
FUSE BOX

CD-6
SUPPLY A
SIG B
TRAVEL

RETURN C
CD-7
SUPPLY A
SIG B
WORK

RETURN C

CD-24
SUPPLY A
SIG B
SWING

RETURN C
CD-31
SUPPLY A
SIG B
LOAD
OVER

RETURN C
CD-32
SUPPLY A
2
1
2
1
1

1
1
2

2
2
1
2
1
2

UP

SIG B
CN-81

CN-70

BOOM
CN-88
CN-263

CN-133

RETURN C
CN-242

CN-242A

CD-90
AIR COMP RY

TRAVEL BZ

A
POWER MAX

SUPPLY
IN
TRAVEL-HIGH

ATT
ATT

ARM

SIG B
BOOM PRIORITY

EPPR2
EPPR1

RETURN C
300S4EL13
 LH RH

B
2

1
max
HORN
BREAK
CD-36

decel
power

A
SUPPLY A CS-83

CS-5

PRO
PRO

cs-19
CS-26

cs-29

C
SIG B 1

L
B

Gr

5V
5V

L
B
SIG
SIG

Gr
7 8

RETURN
RETURN
C 2

ARM OUT
RETURN

2
1

2
2

A
B
1
1

C
B
A
B
A

C
C
3

2
2
1
1
CS-26A

CN-246

SAFETY SW
CN-247

CS-4
CD-87

BREAKER SW
4 1
SUPPLY A 2
5 3
SIG B
6 4
RETURN C 5
7 9
CD-85 8
SWING LOCK SWING SW

SUPPLY A 9 9 10
SIG B 10
RETURN C

BUCKET OUT BOOM DOWN

CN-51 CS-83
BATT POWER_24V 1 1
KEY IG 24V 2 2 7 8
SENSOR 24V 3 3
ENG. SPEED INPUT+ 4 4 1
2
GND(5V) 5 5 3
POWER_5V OUT 6 6 4
5
GOV MOTOR+ 7 7 9

2
2
2

5
5

4
1
4
1
4
1

9
8
7
6
9
8
7
6

3
3
3

9
8
7
6

16
15
14
13
12
11
10
16
15
14
13
12
11
10
GOV MOTOR- 8 8

2
1
SWING FINE SWING SW

CN-4
CN-6
CN-7

CN-68
STRAIGHT TRAVEL SOLENOID 9 9 9 10

SAFETY SOL
ARM IN OILOT PRESSURE 10 10
GND_MAIN 11
CAN_SHIELD 12
GROUND (SENSOR) 13
FAN SPEED INPUT+ 14
PULSE INPUT- 15
CN-36
ELECTRIC CIRCUIT FOR HYDRAULIC (2/2)

PROGRAM DUMP 16
ONE TOUCH DECEL SIG 17 IG POWER 30A
3
POWER BOOST SW 18 MCU 30A
HOUR METER 4
19 ROOM LAMP/CASSETTE 10A
ANTI RESTART RY 20 5
START KEY 30A
CAN #1 Hi 21 6
AIR CON/HEATER 20A
CAN #2 Hi 22 7
WIPER MOTOR 10A
RS485 TX 23 8
CLUSTER 10A
RS232 #1 TX 24 9
RS232 #2 TX FUEL CUT OFF SOL 10A
25 10
FINE SWING SELECTION SW 26 CLUSTER 10A
11
ENG. OIL PS 27 MCU CONT. 20A
12
COOLANT WATER LEVEL 28 MCU_EPPR 20A
AIR CLEANER CLOGGING SW 13
29 SWITCH PANEL 10A
A/C BLOWER STATE 30 14
CASSETTE 10A
CAN #1 Lo 31 15
PVG CONT. 10A
CAN #2 Lo 32 16
START. STOP 30A
RS485 RX 33 17
WORK LAMP 30A
RS232 #1 RX 34 18
RS232 #2 RX CABIN LAMP(OPTION) 30A
35 19
SAFETY LEVER S/W 36 WIPER 10A
20
ARM OUT PILOT PRESSURE 37 WORK LAMP 20A
21
OPTION PILOT PRESSURE SW 38 FUEL HEATER 30A
N1 PRESSURE 22
39 START,AIR HEAT 20A
N2 PRESSURE 40 23
HORN 10A
24
AC& HEATER 20A

MCU
CN-52 25
SAFETY SOL 10A
ARM REGEN SOL 1 26
POWER BOOST SOL 2 SEAT 20A
27
TAVEL SPEED SOL 3 SWITCH 20A
28
ATT. SAFETY SOL 4 CIGAR 10A
29
ATT. PRESSURE SOL 5 OPTION,SWITCH 20A
ATT. CONFLUX SOL 6 30
SOLENOID 15A
BOOM PRIORITY EPPR(+) 7 31
CONVERTER 10A
EPPR POWER 24V 8 32
FUEL P/P 20A
PUMP SHIFT EPPR+ 9 33
AAVM / SIREN 10A
ATT. FLOW EPPR1(+) 10 34
NC BREAKER 10A
11 35
FUEL WARMER RELAY
FUSE BOX

12
TRAVEL BUZZER 13
ENGINE STOP RELAY 14
PREHEAT RELAY 15

4-21
ATT. FLOW EPPR2(-) 16
BOOM PIORITY EPPR(-) 17
GROUND(EPPR) 18
PUMP SHIFT EPPR- 19
ATT. FLOW EPPR1(-) 20
COOLING FAN EPPR(+) 21
COOLING FAN EPPR(-) 22
ACCEL DIAL SIG. 23
HYD. OIL TEMP SENDOR 24
5
3
4
1

9
8
7
6
2

12
11
10

ENG. COOLANT TEMP 25

CN-3

FUEL LEVEL SENDOR 26

ALT VOLTAGE 27
GOV MOTOR POTENTIONMETER 28
P1 PRESSURE SENSOR