SECTION 4 ELECTRICAL SYSTEM

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

Group 2 Electrical Circuit ------------------------------------------------------------------------------------------------ 4-3
Group 3 Electrical Component Specification ---------------------------------------------------------------- 4-24
Group 4 Connectors -------------------------------------------------------------------------------------------------------- 4-32
 SECTION 4 ELECTRICAL SYSTEM
GROUP 1 COMPONENT LOCATION
1. LOCATION 1

18 19
17 20
16 21
15
B
A
C

Travel pilot lamp

14
13 ON

push
22
12 23
11 24
10
9
8
7
SEEK
MUTE

MODE
CALL

Electric box
6
VOL

5
4
3 25
2
26
1
27
28
29
CN-16&16A
30 CN-16B

31 32

14W94EL01

1 Service meter 12 Ram lock switch 23 Heated seat switch

2 Multi function switch (RH) 13 Hazard switch 24 Radio & CD/MP3 player
3 Start switch 14 Select switch 2 25 Master switch
4 Cluster 15 Main light switch 26 Fuse & relay box
5 Handsfree 16 Work light switch 27 RS232 & J1939 service socket
6 Accel dial 17 Cab light switch 28 One touch decel switch
7 Breaker operation switch 18 Select switch 2 29 Power max switch
8 Horn switch 19 Quick clamp switch 30 Safety lever
9 Creep switch 20 Beacon switch 31 Multi function switch (LH)
10 Remote controller 21 Overload switch 32 Emergency engine connector
11 Air conditioner switch 22 Speaker

4-1
 2. LOCATION 2

4 1
1 25
1 28

1 27
BOOM CAB SOLENOID VALVE COUNTERWEIGHT
26

2 8 9 10 12
13
ON

F
23
14
OF

3 24
a3
15
a2
a1 16
BRAKE VALVE
29

5
6

21
20
7 Pc2

1
Pc1

18
c
h1
11 Pw

17
19
d1
1 22

SHUTTLE BLOCK BOOM SAFETY VALVE MAIN CONTROL VALVE

20W94EL20

1 Lamp 11 Overload pressure sensor 21 Nega 2 pressure sensor

2 Fuel sender 12 Start relay 22 Attach/travel pressure sensor
3 Fuel filler pump 13 Alternator 23 Working pressure sensor
4 Beacon lamp 14 Heater relay 24 Brake lamp pressure sensor
5 Battery 15 Air cleaner switch 25 Solenoid valve
6 Battery relay 16 Travel alarm buzzer 26 Pump EPPR valve
7 Horn 17 Arm / Bucket in pressure sensor 27 Boom priority EPPR valve
8 P1 pressure sensor 18 Boom up pressure sensor 28 Rear camera
9 P2 pressure sensor 19 Swing pressure sensor 29 MCU
10 P3 pressure sensor 20 Nega 1 pressure sensor

4-2
GROUP 2 ELECTRICAL CIRCUIT (1/3)
CN-97 189 5R
0.8B SILPRING
1 FNR COM 1 AIR-CON
0.8Br 163 5W 57
2 FNR REV 2 NO. DESTINATION CN-11 AC COMP RY ECM POWER
0.8YW 138 0.8B 151 MASTER SW POWER RY
3 TR1 3 1 CONTROLLER GND 1 2RW
0.8GOr 164 0.8G 111 R/DRYER 188 CR-66
PRE-HEAT

5R 189
5R 190
POWER_1

POWER_2
4 FNR FWD 4 ANTI-RESTART 71 0.8Gr

85
BLOWER SIG

86
2

85
2

86
0.8BOr 165 187 0.8OrW 186 FUEL PUMP 1

CAN_Lo

2
2L 29 CN-81

Pa

CAN_Hi

GND_2
SPARE
GND_1
SPARE
5 TR2 5 0.8L 4 5 1

87a 87
4

30

87a 87
3 AC 24V 3 5 0.8G

30
0.8LOr 136 2

M
2

2
FUSE BOX

2
6 FNR NEUTRAL 6 4 REVERSE FAN SIG 4 ILLUMINATION FUEL HEATER G B 4 0.8L
0.8L 7 3

4
15

5
2Y 1

CN-29

5
CS-74

3
7 Hi BEAM B+ 7 34 0.8V

87a

CR-35
5 CONTROLLER B+

87a
5

10
CR-7

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31
CR-45
30
CN-95

2
86

85
4

87

30
86

85
87
0.8LW 149

CS-74
4
1.2G 193 5W 57

4
8 TURN SIG COM 8 TRAVEL BZ

2
6 AC COMP

2
1
2
6

4
2

3
3 2

30A

10A

20A

30A

20A

10A

10A

10A

20A

10A

10A

10A

20A

30A

30A

20A

20A

30A

20A

10A

30A

10A

20A

20A

20A

20A

20A

20A

10A

10A
5

CR-36
CN-155
0.8Gr 46

5A
5W 191

CN-61
CN-96
CR-5
9 HORN 9

3
7 CONDENSOR FAN 7 CN-123 1

4
1

1
2
3
2

4
PARKING

5
2

2
5

7
8

4
1

1
6

2
3

3
0.8L 146

CS-74B
G

1.2Br
0.8Y 9

ROOM LAMP/CASSETTE
B

0.8WOr
1.2G
1.2Br
10 WASHER

4
10

0.8V
8

0.8L
0.8L
8

0.8WOr
ILLUMINATION 1

0.8OrW
FUSIBLE LINK

2RW
1.2B

CR-15
1
2
5 1.2G

0.8W
11 WIPER WI

2W
11 CR-12

1.2B
2 5R 190

177 0.8GrW
174 0.8ROr
175 0.8BOr
165 0.8BOr

CIGAR,SEAT HEAT
166

5
0.8YW

0.8BOr

2Br
2

4
3

0.8BOr
2

0.8BW
OPTION(BEACON)

2Y
2B
AIR CON/HEATER
CS-74

2B
0.8BW

0.8BW
0.8BW

0.8BW
12 Lo BEAM 12 REV. 1

0.8RY

0.8Br
0.8YB

116 0.8OrW

0.8Y
194
193
5R

0.8Or
192

176
194

SWITCH PANEL
34 0.8V 4 5 1 1 BATTERY

ILLUMINATION
ILLUMINATION
29
29

FUEL HEATER
2W

188
2W
2

187

TRAVEL SOL.
AC& HEATER
14
55

START,STOP

SAFETY SOL
CONVERTER
WORK LAMP
CABIN LAMP
55
14

00
CN-122

TURN LAMP

SOLENOIDE
SOLENOIDE
HEAD LAMP
0.8V

MCU CONT.
CN-60

START KEY
CN-98 34

1.2Or

185
CASSETTE

0.8BOr
G

00
B

6
CLUSTER
3 60R 60B

CLUSTER

27
1.2V 41

180
1

44
145
0.8L
1.2L
35 1.2LW

122
114
121
123
115
113
124
1 HEAD LAMP COM 1

6
WIPER
184 V

WIPER
4

HORN
0.8BrW 167

EPPR
MCU
2

CN-36
1.2G

ECM
00

ECM
36

00
2 HEAD LAMP Hi BEAM 2 DO-7 5 3 2
0.8W 45 0.8V 53 FWD. MASTER SW

186
12V X 2

150
3 WIPER Lo SPEED 3 1 TRAVEL SPEED CR-1

7
7
0.8W 45 0.8ROr 26 CR-30
4 WIPER Hi 4 2 00 1.2B
0.8Br 148 87a
5 WIPER INT 5 163 0.8Br 30 86 CN-70 37 1.2G TO:STARTER "B" TERM.

0.8ROr

0.8ROr

1.2ROr
36

0.8VOr

0.8YOr
CN-22 1.2G

0.8RW

1.2RW

1.2RW
0.8BW

1.2VW
85

1.2R
0.8Y
0.8GrW 131 2

0.8Or

0.8Gr

1.2Or
0.8V 53

1.2Br
3W

2W
6 PARKING SIG

2RW
6

2R
0.8R

0.8R

1.2V

1.2V

1.2V

0.8Y
5 1.2G

1.2L

0.8L
M 1 87 00 0.85 B

2R

2Y

2L
0.8W 130 0.8ROr 26 1
7 WORKING SIG 7 2 4 0.8L BATT RY
0.8Gr 137 86 HIGH SPEED SOL.(M2)

11
12
13
14
15
87a 87 85
8 TRAVEL SIG 8 WASHER PUMP 4 0.8L

16
17
18
19
20
21
22
23
17
24
25

26

27
28
29
30
31

32
33

10
30

3
8

9
0.8BW 134
9 RAMLOCK ON 9 DO-3
0.8VW 129 REV.RY DO-4 37 1.2G
10 RAMLOCK AUTO 10 36 1.2G 2
2 00 1.2B
CR-29 00 0.85 B 1
CN-99 1
135 87a
0.8Or 164 0.8GOr
30 86
DIODE
1 CRUISE SIG 1 DO-2
0.8YOr 10 85 37 1.2G
2 HAZARD SW LAMP 2 184 V 2
0.8YOr 50 87 CN-181 40 0.8W
3 TURN RH 3 4 0.8L 35 1.2LW 1
0.8YW 51 86 87a 87 85 2
4 TURN LH 4 4 0.8L 00 0.85 B
1.2B 30 1 DO-1
5 GND 5 FWD.RY 37 1.2G
0.8L 91 LOW SPEED SOL.(M1) 2
6 WORKING BRAKE LP 6 158 0.8Or
0.8V 72 1
7 RAMLOCK LAMP 7 DO-5
0.8Or 8 35 1.2LW
8 LAMP 24V 8 2
00 0.85 B
9 NC 9 1
DOZER ACT. PS
10 NC 10 44 0.8B DIODE CN-249
2 Pa CN-173
NC 00 SH 1 0.8V
11 11 147 0.8WOr 1 A A
1 00 0.8B 2 0.8G
12 NC 12 2 B
0.8B CD-50 00 0.8W
13 HAZARD SW LAMP 13 3 C B
0.8B 3B CN-245 00 0.8R
14 PWT COM 14 5W 57 CN-3 4 RESISTER
0.8B 3 1
15 RAMLOCK SW COM 15 5B 195 00 SH SH 00 CAMERA
0.8BrW 133 2 1 CN-93
16 RAMLOCK OFF 16 140 0.8B 0.8B 00 10 0.8BW
PTC POWER 2 3 REMOTE ACCEL ON/OFF
141 0.8W 0.8W 00 9 0.8LW
3 34 REMOTE ACCEL RETURN
21 0.8R 0.8R 00 18 0.8B
4 32 RETURN
19 0.8W
MULTI-FUNCTION SW CN-5 5 26 ACCEL POSITION SIGNAL
0.8Y 81 20 0.8Gr
1 CLUSTER TX 1 6 21 ACCEL POSITION SUPPLY
0.8L 76 00 0.8Y 0.8Y 00
2 CLUSTER RX 2 7 00 NC
0.8B 140 38 0.8LW 0.8V 1 1 0.8V
3 CAMERA GND 3 8 46 CAN Hi
0.8W 141 39 0.8G 0.8G 2 2 0.8G
4 CAMERA SIG. 4 9 47 CAN Lo
0.8Gr 21 53A SH SH 3 3 SH
5 CLUSTER IG 5 10 37 CAN Shield
0.8RW 17 174 0.8ROr 0.8ROr 4 4 0.8ROr
6 CLUSTER BATT.24V 6 11 40 AIR-HEATER OUTPUT
0.8R 142 175 0.8BOr 0.8BOr 5 5 0.8BOr
7 CAMERA 12V 7 12 42 AIR-HEATER RETURN
SH 6 19 0.8Or 0.8Or 6 6 0.8Or
8 SHIELD 8 13 39 POWER IG
0.8BW 60 11 2W 2W 7A
9 P DUMP 9 14 00 00
143 11 1.2W 1.2W 7A 18 0.8B
0.8Br 15 28 COOLANT LEVEL
10 QUICK COUPLER SW NO 10
0.8V 144 *7 00 COOLANT LEVEL RETURN
11 OVERLOAD PS 11
0.8VOr 102 CR-62 3W
12 OVERLOAD SIG MCU 12 00 0.8B
0.8YOr 10 1
13 ILLUMINATION 13 159 0.8BW 4 5 1 *7 3W CN-94
73 2 7A 2W
0.8W 4 BATT (+)
14 HOUR METER SIG. 14 8 0.8Or
0.8G 82 3 CL-21 0.8Y 00
7E 2W
15 RS232 RX 15 3 BATT (+)
2 8 2B
0.8R 77 4 0.8B 16
16 RS232 TX 16 181 1.2Br 2 BATT (-)
3 2 1 8 2B
0.8B 3B 5 1 BATT (-)
17 GND 17 NUMBERPLATE
0.8R 16 BREAKER
18 WIPER CONT BATT.24V 18 LAMP
0.8V 53 ECM EARTH
19 WIPER CONT WASHER P/P DRIVE 19 CD-45
0.8LW 38 179 0.8V (BATTERY (-) TERMINAL)
20 CAN Hi 20 2
0.8G 39 178 0.8Br
21 CAN Lo 21 1 WIF
SH 53 21 0.8Br
22 Shield 22 WIF SENSOR 1 14 WIF SIGNAL
0.8W 45 22 0.8V
23 WIPER DRIVE SIG 23 2 47 WIF RETURN
24 WIPER IG 24
0.8ROr 26 CN-2 CUMMINS CONNECTER
172 0.8LW 0.8LW 9
1.2ROr 32 1
25 HEAT SEAT SW COM(IG) 25 173 0.8BW 0.8BW 10
1.2B 15 2 CN-28
26 HEAT SEAT GND 26 176 0.8V 1.2V 11 8 1.2V
1.2B 15 3 1
27 CLUSTER GND 27 177 0.8GrW 1.2GrW 12
1.2V 22 4
28 DC-DC CONVERTER IG 28 178 0.8Br 0.8Br 13
1.2Or 8 5 AC COMP
29 SW COM(IG) 29 179 0.8V 0.8V 14 CN-45
1.2B 19A 6 CR-23
30 GND 30 180 15 1.2BOr
0.8BOr 1.2BOr 15 M
31 GND 31
1.2B
0.8R
19
18
65 BOr
7
1.2B 16 16 1.2B
2
1
M
8
32 FLASHER UNIT B+ 32 40 0.8W 1.2W 17
1.2Br 33 9
33 BEACON SW COM(IG) 33
54 54 2V 169 0.8B 0.8B 18 START RY.
FROM BATT.RY
B+
1.2V 10
34 CABIN LIGHT 34 170 0.8W 19
0.8BOr 145 0.8W STARTER
35 START KEY SW START 11
35 171 0.8Gr 0.8Gr 20
1.2W 14 12
36 START KEY SW COM 36 CN-74
0.8L 146 15R
37 WASHER SIG 37 B+
0.8V 54 G
38 CABIN LIGHT 38 CL-4
0.8WOr 147 48 1.2R 17 1.2W ~3
39 DOZER PS 39 CN-216 CN-128 1 Lo I
0.8B 56 56 0.8B 49 1.2Or U
40 NC 40 1 1 2 Hi GND
0.8BrW 83 0.8BrW 3 3 0.8Y G81 B
41 RS232 RX2(GPS) 41 2 2 3 E ALTERNATOR
0.8GrW 78 CR-24
42 RS232 TX2(GPS) 42 FRONT LH REAR RH HEAD LAMP RH
0.8Br 148 15R
43 INT WIPER 43 CN-214 CN-220 12
0.8LW 149 0.8B 56 56 0.8B CL-3 CN-80
44 FLASHER UNIT L 44 1 1 48 1.2R
0.8Gr 3 3 0.8L 15R
0.8BOr 150 1 Lo
45 ILLUMINATION SW PANEL 45 2 2 49 1.2Or
0.8Y 12 FRONT RH REAR LH 2 Hi
46 CASSETTE RADIO BATT.24V 46 G1 B GLOW PLUG RY GLOW PLUG
0.8VOr 23 3 E
47 CASSETTE RADIO IG 47
HEAD LAMP LH
48 ECONO SW 48
0.8BrW 151
49 SWITCH PANEL HEAD LAMP 49 CN-151
0.8VW 152 156 0.8GrW
50 SWITCH PANEL WORK LAMP 50 1 CABIN LAMP RY(COIL)
0.8L 153 54 2.0V
51 SW PANEL FRONT/RIGHT 51 2 CABIN LAMP RY
25 2.0R
52 PRE-HEAT 52 3 CABIN LAMP RY
0.8Br 154 152 0.8VW
53 SW PANEL REAR/RIGHT 53 4 WORK LAMP RY(COIL)

HARNESS RY
0.8G 155 183 2.0RG
54 SW PANEL FRONT/LEFT 54 5 WORK LAMP RY
0.8GrW 156 24 2.0RW
55 SWITCH PANEL CABIN LAMP 55 6 WORK LAMP RY
0.8BW 157 G39 1.2B
56 SW PANEL REAR/LEFT 56 7 RELAY EARTH
0.8V 22 49 1.2Or
57 SWITCH PANEL IG 57 8 HEAD LMP RY HI
167 0.8BrW
58 ECONO SW 58 9 HEAD LMP RY HI(COIL)
0.8WOr 55 48 1.2R
59 START SW ACC 59 10 HEAD LMP RY LO
0.8Or 158
60 START SW BR 60 11 NC
8 1.2Or
12 OUTRIGGER RY
CN-7
0.8Gr 42 CN-152
1 JOYSTICK SUPPLY 1 92 0.8V
0.8B 43 1 FUEL HEAT RY(COIL)
2 JOYSTICK GND 2 185 2.0Br
0.8L 79 2 FUEL HEAT RY
3 JOYSTICK TILT SIGNAL 3 166 0.8YW
4 NC 3 HEAD LMP RY LO(COIL)
4 151 0.8BrW
0.8Or 8 4 HEAD LMP RY (COIL)
5 BREAKER SW 5 00. 0.8L
0.8BW 159 5 REAR LH RY

HARNESS RY
6 BREAKER SW 6 00. 0.8Y
0.8B 33A 6 REAR RH RY
7 HORN 7 00. 0.8BrW
0.8Gr 46 7 FRONT LH RY
8 HORN 8 6 2.0Y
8 FUEL HEAT RY
9 BUTTON 2 9 00. 0.8Gr
9 FRONT RH RY
10 BUTTON 2 10 157 0.8BW
11 BUTTON 1 10 REAR LH RY(COIL)
11 154 0.8Br
12 BUTTON 1 11 REAR RH RY(COIL)
12 155 0.8G
13 NC 12 FRONT LH RY(COIL)
13 153 0.8L
0.8GrW 160 13 FRONT RH RY(COIL)
14 ACCEL DIAL SUPPLY 14 7 2.0L
0.8W 161 14 HEAD LMP RY
15 ACCEL DIAL SIGNAL 15 7 2.0L
0.8B 162 15 HEAD LAMP POWER RY
16 ACCEL DIAL GND 16

CN-8 CN-12 CL-5

G2 2B B 2 2 B
1 NC 1 2 1
183 2RG RG 1 1 RG
2 CRAB SW 24V 2 1 2
3 CRAB SW COM 3 WORK LAMP
2A B
4 NC 4 1
1A RG
5 GND 5 2
CR-2 CL-6
6 CRAB SW SIG 6 28 1.2V
30
7 NC 7 28 0.8V 87a 87 85
86
8 NC 8 47 1.2G
87
9 NC 9 46 0.8Gr CN-25
85 G3 1.2B
10 NC 10 1
30 86
11 NC
87a 47 1.2G
11 2
HORN
12 NC 12 HORN
RH CONSOL G5 1.2B
1
47 1.2G
CN-4 2
0.8Gr 42
1 JOYSTICK SUPPLY 1 CN-20
0.8B 43
2 JOYSTICK GND 2
0.8LOr 80
3 JOYSTICK ROTATE SIGNAL 3
4 NC 4
0.8Y 132
5 POWER MAX SW 5
0.8B 81
6 POWER MAX SW 6 CN-16B
0.8GrW 139 0.8B 169
7 ONE TOUCH DECEL 7 1
0.8B 81 2.5k 0.8W 170
8 ONE TOUCH DECEL 8 2
0.8Gr 171
9 BUTTON 2 9 3
2.5k 0.8LW 172 CD-1
10 BUTTON 2 10 CR-79 4 84 1.2LOr
1.2V 28 0.8BW 173 2
30 5 2 1.2B
11 BUTTON 1 11 28
85 87 87a 0.8V 0.8Br 44 1 C
12 BUTTON 1 86 6
12 1.2G 00 HYD TEMP
13 NC 87
13 0.8Gr 00
1.2B 33B 33 85 CN-16 CD-2
14 SAFETY SW COM 14 86 30 162 0.8B 0.8B 43 85 1.2YOr
87a 1 2
15 SAFETY SW NC 15 161 0.8W 0.8W 93 2 1.2B
1.2G 163 PEDAL 2 1
16 SAFETY SW NO 16 160 0.8GrW 0.8Gr 42
3 FUEL LEVEL
LH CONSOL CN-153 135 0.8BW
1.2G 163 4 CD-10
1 135 0.8BW 128 1.2YOr
2
1.2VW 30 5
CN-68 135 0.8BW 2 1.2B
Pa
1.2G 163 6
1 PEDAL
1.2VW 30 1.2G 163 AIR CLEANER SW
2 1
SAFETY SOL 1.2VW 30
2 CN-206
CN-154 163 1.2G
1
CN-140
1.2B 33C CR-47 30 1.2VW
2
1 0.8ROr
0.8Br 143 30 CRAB
2 0.8Y 87a 87 85
86
QUICK COUPLER
87
0.8BOr
85
0.8GrW 30 86
CL-16 87a
0.8Y 9
TA 1 SAFETY SOL RY
NC 2
YOr 50
TU 3
0.85B 00
EH 4
0.8G 5 CL-26 CL-27
BU 5 SIDE SIDE
0.8Gr 52 MARKER LH MARKER RH
ST 6
REAR COMBI RH
1

1
2

CL-25
0.8 YOr 10
C 1
B G82
E 2
YOr 50
T 3
FRONT COMBI RH
CL-15
0.8 YOr 10
TA 1
NC 2
0.8YW 51

102
103

119
100
101

104
105
106
107
108
109
110

112
113
114

115
116

118

120
121
122

123
124

126
127

128

131

132

139
TU

129
86

56

130
3

117

125

138
111

137
136
133
134
135
58 2B

31
87
60

78

79
80

83
84

85
40

89
90

91
00

44
92

93

95
96
97
98
99
88

94
G41
76

B
38
74
73
1
2

72
71
58
13
20

42
43

58
59

77

39
0.8LW 75
81
82

EH 4

122
114
121
123
115
113
124
116

110

101

108

126
118
120
112
0.8G 5

0.8GrW
BU

0.8GrW
5

0.8GrW
0.8GrW

0.8GrW

0.8WOr

0.8OrW

2
0.8BrW

0.8BrW

0.8BrW

0.8GOr

0.8ROr
0.8ROr

0.8VOr

0.8BrW
0.8BOr

1.2YOr
0.8GW

0.8VW
1.2RW

0.8LOr

1.2LOr

0.8LOr

0.8RW

0.8RW

0.8BW
0.8LOr
1.2YOr

0.8BW

0.8YW
0.8BW

0.8YW

0.8YW

0.8BW
0.8BW
0.8BW

0.8BW
0.8BW

0.8BW
0.8BW

0.8LOr
0.8LW

0.8LW

0.8BW
0.8RY
0.8YB
0.8Gr 52
0.8Gr
0.8Gr

0.8Gr

0.8Gr

0.8Or

0.8Or

0.8W

0.8Gr
0.8Br
0.8Br

0.8Br

0.8W

0.8Or
0.8W

0.8W

0.8W
0.8G

0.8G

0.8G

0.8G
1.2R

0.8R
103

0.8V
1.2B

0.8B

0.8B

1.2B

0.8Y

0.8V

0.8V

0.8V
0.8Y

0.8Y
88

87
89

87
89

0.8L

0.8L

0.8L
0.8L

0.8L

0.8L
ST 6

0.8OrW

0.8ROr
1

SH

0.8BW

0.8BW
0.8BW

0.8BW

0.8RW

0.8RW
0.8BW

0.8BW
0.8RY

0.8YB
0.8Or
144
105

106

104

100

109

107

56
56

0.8G
REAR COMBI LH
90

0.8B
0.8V
0.8L
99

97

98

96

95

86

3
0.8GrW

0.8GrW

3
1

2
1

3
0.8GW

0.8GW
0.8LOr
1.2RW
0.8BW

CN-51

CN-52

CN-53
0.8G
0.8L

CL-24
75
74
0.8BrW

0.85RW

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
PEDAL FWD PRESS.(AD IN) 28
29
30
31
32
33
34
35
36
37
38
39
40

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
0.8Y
1.2RW

CN-1
CN-14
1
2
3
4
5
6
7
8
9

1
2
3
4
5
6
7
8
9

1
2
3
4
5
6
7
8
9
1.2RW

127
119
0.8WOr

1.2RW
0.8BrW

125
117
0.8GOr

0.8ROr

1
0.8ROr

0.8ROr

0.8ROr

0.8ROr

0.8ROr

0.8ROr

0.8ROr

0.8ROr

0.8ROr

0.8ROr

0.8ROr
0.8BOr

0.8Gr

CN-131
0.8LOr

0.8YW
0.8LW

CD-38
0.8V
0.8Or

0.8Gr

B G2
0.8V

1 2

6
1

4
5

7
8

3
2

6
1

4
0.8V
0.8B

7
8
9
0.8B

0.8B

0.8B

0.8B

0.8Y
0.8B

0.8B

0.8B

0.8B

0.8B

0.8B

0.8B

10
0.8L

0.8B
CN-15

TRAVEL PRESS SENSOR(A)

E 2

PEDAL REV PRESS(AD IN)

WORK PRESS SENSOR(A)

REVERSE FAN_MANUAL
BOOM PRIORITY EPPR+
ARM IN.OUT BUCKET IN PS
C 1

BOOM PRIORITY EPPR-

RETURN

BOOM UP PRESS SENSOR

TRAVEL LEVER NEUTRAL

RIGHT ROTATE EPPR+
0.8YW 51
WORKING BRAK LAMP

RIGHT ROTATE EPPR-

OPTION AUTO IDLE A_IN
2 B
RS485+(TX)(CLUSTER

0.8Y 168
0.8YW

COOLING FAN EPPR+

TWOWAY PEDAL SOL

WORK BRAKE PRESS

REVERSE FAN_AUTO
SWING PRESS SENSOR
0.8LW

ONE TOUCH DECEL SW

LEFT ROTATE EPPR+
3

ATT. PRESS SENSOR

6
1

4
5

7
8
9
2

10
11
12

COOLING FAN EPPR-

0.8GrW
RAMLOCK SW_AUTO
3

LEFT ROTATE EPPR-

EPPR POWER IN 24V
WATER TEMP SENDOR
POWER OUTPUT_5V

MODE SW_PARKING

0.8BW
ENG. OIL PRESS SW
RESERVE PWM IN01
RESERVE PWM IN02

GOV. POTENTION SIG.

TRAVEL SPEED SOL

SIG+ B 2

0.8BW
PUMP SHIFT EPPR+
ATT CONFLUX SOL.
CN-88

N2 PRESS SENSOR

PUMP SHIFT EPPR-

P1 PRESS SENSOR
FUEL LEVEL SENSOR
RS485-(RX) CLUSTER

0.8W
OVERLOAD PRESS
CN-135

DO-6
CD-31
CD-71

3
RS232C1 RX HRDT

FUEL WARMER RY

RIGHT TILT EPPR+

CD-24

CN-69

Y
CD-7
CD-70

CD-6

POWER BATT_24V

0.8ROr 1
CD-35
CD-73

WATER LEVEL SW
CD-5

CD-74

CD-32

TRAVEL EPPR+(w)
ANTI RESTART RY
CD-3

RIGHT TILT EPPR-

FRONT COMBI LH
HYD.TEMP SENDER

ATT FLOW EPPR+

1

TRAVEL EPPR-(w)

MODE SW_WORK
TACHO SENSOR+

TRAVEL ALARM SW
2

PARKING RY OUT

RS232C2 RX RCM

AIR CLEANER SW
N1 PRESS SENSOR
POWER_24V OUT

POWER MAX SOL

P3 PRESS SENSOR

P2 PRESS SENSOR
RS232C2 TX RCM

MODE SW_TRAVEL
PROGRAM DUMP

ATT FLOW EPPR-

ARM REGEN SOL

RESERVE EPPR+

LEFT TILT EPPR+

REVERVE EPPR+
TACHO SENSOR-

ATT SAFETY SOL

1
2

3
1

TRAVEL BUZZER

LEFT TILT EPPR-

REVERVE EPPR-
SUPPLY A
2

ATT PRESS SOL.

REVERVE EPPR-

BRAKE OIL PRESS

POWER MAX SW
RS232C1 TX HRDT

CRAB SIGNAL"ON"
1

GND PRESSURE
2

RAMLOCK LAMP

SAFETY SOL RY

ACCEL DIAL SIG

ENG OIL FILTER

C

PREHEATER RY
C

C
A
B
A
B

SUPPLY A
B

SUPPLY A
B

SUPPLY A
B

SUPPLY A
B

A
B

A
B

SUPPLY A
B

SUPPLY A
B

A
B

SUPPLY A
B

TRAVEL Hi-Lo SW
PWM OUTPUT1
PWM OUTPUT2

T/M OIL PRESS

RAMLOCK SOL

BLOWER SIG_IN
RESERVE A IN

CAN2 Lo APTC

RAMLOCK_ON
ACCEL ACT(+)

RIGHT ROTATE+
CAN2 Hi APTC

ENG STOP RY

RAMLOCK_OFF
HOUR METER

WORKING BRAKE

PREHEAT SW
ACCEL ACT(-)

RIGHT ROTATE-
CAN1 Lo ECM
ATT.CONFLUX SOL

4
BREAKER SOL(GND)

CAN1 Hi ECM

SENSOR GND
ROTATE SIG.

PUMP SHIFT+
CN-244

LEFT ROTATE+
ATT.SAFETY SOL

PUMP SHIFT-
CAN SHIELD

CR-45

LEFT ROTATE-

SENSOR 24V
RETURN
RETURN

RETURN

RETURN

RETURN

RETURN

RETURN

RETURN

RETURN

RETURN

RETURN

RETURN

4 YW
SUPPLY
SUPPLY

SUPPLY

SUPPLY

SUPPLY

CRUISE SW

CN-133
0.8ROr 1

CN-246
ATT PRESS SOL

ATT FLOW+
0.8Y 168
CRAB SOL
POWER IG

ATT FLOW-
GND MAIN

GND MAIN

ALT. LEVEL

RIGHT TILT+
5

1
BREAKER SOL

2
CD-4

RIGHT TILT-
1
2
2
1

1
SENSOR GND

TILT SIG.

LEFT TILT+
5 GrW

LEFT TILT-
94
SENSOR 24V

0.8Br
GND 5V
SIG
SIG

SIG

SIG

SIG

SIG

SIG

SIG

SIG

SIG

SIG

SIG

1 5 4 0.8V 28 SIG+ C 6 POWER RAMLOCK DIODE

D OUT
ATT.PS SIG

ARM

P2 SIG

P1 SIG

P3 SIG
2 BOOST

GND
0.8V 28 REGEN CAN2
SOL 24V

RETURN B PRESS PRESS PRESS PRESS N1 N2 WORK(A) ARM IN OVER TRAVEL(A) SWING BOOM UP

NC
3
SUPPLY A SENSOR SENSOR T/M SENSOR(R) SENSOR(F) PRESS PRESS LOAD
4 AUTO BOOM
NC

NC
NC

0.8Gr BRAKE FAIL PRIORITY PUMP HARNESS

2 3 52 STOP LAMP MCU CRUISE
5 OPTION
TWO WAY SOL
STOP LAMP 20W94EL01

4-3
ÂELECTIRC
LECTIRC CIRCUIT (2/3)

RELAY
INTAKE M/ACT TEMP M/ACT MODE(D/FOOT) MODE(VENT) BLOWER
Service Tool DC/DC CONVERTER CIGARLIGHT
OVERLOAD SW CS-67

24V
12V SOCKET HOUR METER 2 7 2 7

12
1

12
1 4 1 4

RS232 P_DUMP
M M M BLOWER

10
M

4
9
3 3

3
7

1
7

12V
2 12
2

h
5 5

M
RS232_RX
RS232_TX

4
2
3

GND
CAN_Lo

CN-48

5
6
7
CAN_Hi

5
6
7

5
6
7
1
2
3
4
5
6
7

1
2
3
4

1
2
3
4
1
2
3
4
12V
24V
10 0.8Br

CL-2
4

GND

CN-139
- S

1
CN-138

2
1

4
2
3
B+

11
nc
nc
nc
5

2
1
2

8
3
2
1

CS-50

10
6

11
12
0.8YOr
1.2ROr
CN-21

9
4

8
1
2
3

6
7
3

0.8RW

1.2B
7

0.8W
7

0.8B
3 1

G
9

B
E

A
WIPER CUT

F
26

J
0.8Or

1.2Or
R 10

1.2B

1.2Or
8

1.2V
1.2B

0.8VOr
2
4

0.8Or

0.8Or
12

0.8Br
Gr

0.8V

0.8B
3 9 8
5

13

84
24
84
10

14
R 4A

CS-53

6
84
75
0.8BW
4 10

75

84
25
0.8G

0.8G
0.8R
10

0.8V
0.8B
4 G 8 0.8Br HARNESS AIR-CON

0.8
0.8
0.8
11

77
12

28
11

77
84
5 84 0.8B 11 12
9

2A B
L 12
2 6 CN-11 NO. DESTINATION

9
8
7
6
5
4
3
2
1
6 M

CN-126
Or
QUICK COUPLING SW
1 1 GND

10
9
8
7
6
5
4
3
2
1
2 BLOWER SIG

11
2
WIPER MOTOR
CS-52 3 3 FUSE(IG)
1

9 0.8BW
19 0.8LW
2 12 4 4 REVERSE FAN

20 0.8G

15 0.8G
16 0.8R
0.8B
2
42 0.8BW 5 5 FUSE(Battery)
CN-141 3
6 6 DPS(COMPRESSOR)
G 8 78 0.8G

82
FEED BACK 1 CN-157 4
W 1 ANTENA 7 7 CONDENSOR FAN
MOTOR DRIVE SIG 2 CN-17 5 8 8 ILLUMINATION
L 9
MOTOR DRIVE- 3 1 6
R 10 1 W 0.8W 22 52 0.8LOr 3
MOTOR DRIVE+ 4 2 7 7
B 2 2 B 1.2B 24A 28 0.8Br 9
GND 5 3 8
GrW 3 3 GrW 0.8ROr 23 4
VCC 6 4 9 8
R 4 4 R 0.8R 17 10
CONTINUE 24V 7 5 10
V 5 5 V 0.8V 18 78 0.8G
WASHER P/P 8 6 11
L 6 6 L 0.8L 32 84 0.8B 11 12
WASHER SIG. 9 7 12
Br 7 7 Br 0.8Br 37
INT. SIG 10 8 ECONO SWITCH
Or 11
WIPER CUT SW 11
CN-56

32
22
N.C 12 WIPER MOTOR HARNESS 6 0.8RW RR
Gr 12 1 BATT.24V
FEED BACK 13 RR

0.8W
0.8L
2 SIG3
WIPER MOTOR CONT. 81 1.2B RR
3 GND

10
11
12
13
14
15
16
17
18

10
11
12
13
14
1
2
3
4
5
6
7
8
9

1
2
3
4
5
6
7
8
9
1 0.8Y RR
4 TX

DO-16
1
2
5 0.8Gr RR
CN-170 5 IG 24V

0
0

0
0
1

TEMP MOTOR ACT(+)

76 0.8Y

DUCT SENSOR(GND)
TEMP MOTOR ACT(-)
1.2LW RR

DPS(COMPRESSOR)

1
2
MODE M/ACT(FOOT)

BLOWER RELAY(Lo)
INLET MOTOR(REC)
SIG2

INLET MOTOR(FRE)
1 6

MODE M/ACT(PBR)
MODE M/ACT(DEF)

AMBIENT SENSOR
TEMP M/ACT(PBR)

CONDENSOR FAN
1

MOTOR ACT(REF)
83 0.8Y

DUCT SENSOR(+)

W/TEMP SENSOR
MODE M/ACT(M+)
1.2B RR

POWER TR BASE
MODE M/ACT(M-)

FET(FEED BACK)
2 7 CAMERA SIG

INCAR SENSOR
> > >

REVERSE FAN
2

ILLUMINATION
ILLUMINATION
0.8L RR
SPARE 8 RX

BATTERY(+)
AMBIENT INCAR W/TEMP

FET(GATE)
POWER TR

POWER IG
CLUSTER SENSOR SENSOR SENSOR
CS-82 CN-5 DUCT

IG 24V
0.8B 83 1 0.8Y SENSOR

GND
12 1 1 MCU RX

NC
NC

NC
12 11 0.8LW 76 2 0.8L
11 2 2 MCU TX
3 0.8B
10 3 3 CAMERA GND
10 4 0.8W AC&HEATER CONTROLLER(auto)
8 9 4 4 CAMERA SIG.
4 1.2ROr 24 5 0.8Gr
8 5 5 FUSE
9 6 0.8RW
7 7 6 6 FUSE
3 7 0.8R
6 7 7 CAMERA 12V CS-1 CN-24
8 SHIELD
Gr 11 0.8BW 2
5 8 8 NC 2
1.2LW 76 9 0.8BW 0.8Gr 3 CN-10 NO. DESTINATION
4 9 9 P DUMP(MCU) 1
10 0.8Br CL-1 1 1 NC
3 10 10 QUICK COUPLING SOL DOOR SW Gr 11 SPEAKER RH
11 0.8V 3 2 2 NC
2 11 11 OVERLOAD PS 0.8Y 1 1 0.8Y
12 2 12 0.8VOr 2 3 3 FUSE
1 12 12 MCU OVERLOAD 0.8B 6 2 0.8BW
spare 13 0.8YOr 1 4 4 CASSETTE RH-
13 13 ILLUMINATION FUSE 3 0.8Gr
14 0.8W CN-23 ROOM LAMP MG651032 5 5 CASSETTE RH+
CS-27 14 14 MCU HOURMETER 0.8BOr 4 4 0.8BOr
0.8B 84 15 0.8G 2 6 6 CASSETTE LH-
12 15 15 RS232 RX(MCU) 0.8Or 5 5 0.8Or
12 11 0.8G 34 16 0.8R 1 7 7 CASSETTE LH+
11 16 16 RS232 TX(MCU) 6 1.2B
82 0.8B SPEAKER LH 8 8 GND
10 17 17 GND 7 1.2B
10 17 0.8R CL-7 9 9 GND
8 9 18 18 FUSE 1.2BrW 8 8 1.2BrW
4 18 0.8V 10 10 BEACON SW
8 19 19 WASHER P/P M 1.2B 6 9 1.2V
9 1.2Or 26 19 0.8LW 11 11 CABIN LIGHT RY
7 7 20 20 CAN Hi 10 1.2V
3 20 0.8G BEACON LAMP 12 12 CABIN LIGHT RY
6 21 21 CAN Lo
5
21 SH
22 22 Shieeld CL-8 10 1.2V
CL-9 HARNESS CABIN
22 0.8W 1.2V 9 2
4 23 23 WIPER DRIVE SIG 2
0.8G 34 23 0.8ROr 1.2B 6 7 1.2B
3 24 24 WIPER FUSE 1 1
24 1.2ROr CABIN LIGHT
2 25 25 FUSE
12 2 83 1.2B
1 26 26 GND
REAR WORK LAMP 81 2.0B
27 27 NC CS-83
0.8B 19A
25 1.2V 12 CS-26A
CS-23 28 28 FUSE 12 11 0.8Or 18A
0.8B 84 26 1.2Or 11 5E 0.8BW
12 29 29 FUSE 2
12 11 0.8BrW 74 84A 1.2B 10 4E 0.8G
11 30 30 GND 1
10 0.8G 15
84E 1.2B 8 9
10 84 2B 31 31 GND 4 0.8V 16 BREAKER
10 27 1.2R 8
8 9 32 32 FUSE 0.8BrW 17
4 1.2Br 28 28 9
1.2Br 7 7 CN-156
8 33 33 FUSE 3 19 1.2B
9 29 2V 29A 1.2V 6 2
7 7 34 34 CABIN LAMP RY 31 1.2ROr
3 30 0.8BOr 5 1
6 35 35 ANTI RESTART RY 0.8Or 18
31 1.2W AIR SEAT
5 36 36 FUSE 4
74 0.8Gr 20
1.2BrW 32 0.8L 3
4 37 37 WASHER SIG CN-8 NO. DESTINATION
29E 0.8V 2 15 0.8G
3 38 38 CABIN LAMP RY 12 2 1 1 NC
33 0.8WOr 1 16 0.8V
2 39 39 DOZER PS 2 2 FUSE
12 2 34 0.8G CRAB SW 17 0.8BrW
1 40 40 REAR WORK LAMP 3 3 CRAB COM
35 0.8BrW 18 0.8Or
BEACON LAMP SW 41 41 RS232 RX2 CS-99 4 4 NC
CN-125A 36 0.8GrW 0.8B 19 19 1.2B
0.8W 31 42 42 RS232 TX2 12 5 5 NC
BATTERY POWER 1 37 0.8Br 12 11 0.8GW 21A 20 0.8Gr
0.8R 55 43 43 INT_WIPER 11 6 6 CRAB SIG MCU
KEY "IG" 2 38 0.8LW 0.8V 27 21 0.8GW
44 44 MULTI-FUNCTION SW 10 7 7 NC
NC 3 39 0.8BOr 10 22 0.8L
0.8BrW 35 45 45 ILLUMINATION RY 8 9 8 8 NC
RX232(1)-TX 4 40 0.8Y 4 0.8L 22 23 0.8VW
0.8B 82 46 46 FUSE 8 9 9 NC
RX232(1)-GND 5 41 0.8VOr 9 0.8L 22A 24 0.8R
47 47 FUSE 7 7 10 10 NC
RX232(2)-RX 6 42 0.8BW 3 25 0.8LW
48 48 ECONO SW 6 11 11 NC
RX232(2)-TX 7 43 0.8BrW 26 0.8RW
49 49 HEAD LAMP RY 5 12 12 NC
RX232(2)-GND 8 44 0.8VW 0.8GW 21
0.8GrW 36 50 50 WORK LAMP RY 4
RX232(1)-RX 9 45 0.8L 0.8RW 26
51 51 Front/Right 3 CN-246
NC 10
0.8B 84 CR-11
46 0.8BOr
52 52 PRE-HEAT 2
5V
1
0.8Gr 1 HARNESS RH,CONSOL
MAIN GND 11 0.8LW 38 47 0.8Br 12 2 PROPO RETURN 0.8B 2
L 1 53 53 Rear/Right SOL 1 RTIONAL 2
0.8B 84 G 0.8R 27 48 0.8L 3
MAIN GND 12 2 0.8G SIG
B 54 54 Front/Left AIR COMP 3
RMS 0.8B 84 49 0.8GrW 3 0.8Grw 7A
E 3 55 55 CABIN LAMP RY 4
50 0.8BW CS-100 1 0.8L 8A
FLASHER UNIT 56 56 Rear/Left SOL 0.8B 19E 5
NO. DESTINATION CN-10 51 0.8V 12 0.8B 6A CN-7 NO. DESTINATION
57 57 FUSE 12 11 0.8V 29 6 1 0.8Gr
1 NC 1 52 11 0.8G 4A 1 1 MCU 5V
0.8LOr 0.8V 29 2
58 58 ECONO SW 10 7 0.8B
2 NC 2 53 0.8WOr 23
2 Gr 0.8BW 5A 2 2 MCU RETURN
0.8Y 40 59 59 POWER RY 10 0.8VW 8 3 0.8L
3 ROOM LAMP 24V 3 54 6 9 3 3 MCU TILT SIG
0.8Or 4
0.8BW 56 60 60 BATT. RY 8
4 SPEAKER RH- 4 4 4 NC
0.8Gr 59 9 0.8G 4 4 0.8G
5 SPEAKER RH+ 5 5 7 1 5 5 BREAKER SW
0.8BOr 72 3 0.8R 24 BREAK B 0.8BW 5 5 0.8BW
6 SPEAKER LH- 6 6 2 6 6 BREAKER RY
0.8R 24A CS-26 0.8B 6
0.8Or 73 6 0.8B
7 SPEAKER LH+ 7 5 1 7 7 GND
1.2B 84 84 2B CS-2 0.8Br 30 HORN R 0.8Grw 7 7 0.8Grw
31 1.2W 4 2 8 HORN RY

H0 I
8 GND 8 CS-5 8
1.2B 84 1 0.8LW 25 0.8L 8 8 0.8L
9 GND 9 54 0.8Or 3 9 9 NC
0.8Br 30

0, I
1.2BrW 74 2 2 L 0.8L 9 9 0.8L
10 BEACON LAMP 10 55 1.2R 2 10 10 NC
4 12 2 0.8Gr 10

H
1.2V 29F 29 2V 3 10 0.8Gr
11 CABIN LIGHT 11 1 11 11 NC
1 0.8Gr 11

BR ACC
1.2V 29G 4 1 Gr 11 0.8Gr

B
2 SPARE 12 NC
12 CABIN LIGHT 12 12
5 3
HARNESS CABIN 30 0.8BOr CN-142 13 13 NC
6 0.8Gr 12 12 0.8Gr
+ A 14 14 MCU 5V

ST C
5 0.8W 13 13 0.8W
6 S B 15 15 MCU ACCEL SIG.
0.8B 14 14 0.8B
START KEY SW - C 16 16 MCU SUPPLY GND
ACCEL DIAL
CN-116
33 0.8WOr
12 DOZER PS
81 1.2B
11 GND
51 0.8V
10 POWER
47 0.8Br CN-247 0.8Gr CS-20
9 Rear/Right 1 12 0.8B
50 0.8BW 1 A C B
8 Rear/Left PWM
B 0.8B 2
45 0.8L CONVERT 2 B
0.8LOr 3
48 0.8G
7 Front/Right
R
3
0.8Grw 6A
15 0.8Br
C A
HARNESS LH,CONSOL
6 Front/Left 4
46 0.8BOr SAFETY SW
5 PRE-HEAT 0.8L 8A
49 0.8GrW 5 NO.
L 0.8L 7A CN-4 DESTINATION
4 CABIN LAMP 6 1 0.8Gr
44 0.8VW 0.8Y 4A 1 1 MCU 5V
3 WORK LAMP 7 2 0.8B
43 0.8BrW 1 Gr 0.8B 5A 2 2 MCU RETURN
2 HEAD LAMP 8 3 0.8LOr
39 0.8BOr 3 3 MCU ROTATE SIG
1 ILL
41
70
65

71
81
63
41

41
67
68
69

70
71

72
73

41
67
13
60
61
66

69

81
81

81

81

56
57
58

40
13

59

81

4 NC
63
64
65
58
66
57
62

81

60
61
64
68
13

4
62

SWITCH PANEL 0.8Y 4 0.8Y

4
1 5 5 MCU POWER MAX
0.5LgW

power
0.5LgW

0.8VOr

0.8BOr

0.8YOr
0.8BOr

0.5VOr

0.8BOr

0.8B
0.5VOr

0.5YOr

0.5RW

0.8B 5
0.5YOr

0.5VOr

B
0.5RW

0.8BW

5
0.5BW

0.5BW
0.5BW
0.5BW

0.5GY

0.5GY
0.5GY
0.5GY

max
0.5YL

0.5BL

0.5LY
0.5LY

0.5BL

0.8Gr

0.8Or
0.5YL

0.8Or

0.5Lg

0.8Or
0.5Lg

2 6 6 MCU SIG.GND
0.5B
0.5B

0.8Y

0.5Y

0.8B
0.8B
0.5B

0.5Y
0.5B

0.5L
0.5B

0.5L

cs-29 6 0.8Grw
CN-125 CN-125 0.8Grw 6
31 1.2W 1 7 7 MCU DECEL
decel R 0.8B 7 7 0.8B
1 1 2 8 8 MCU SIG.GND
CN-27
CN-245

CN-144
CN-246

55 1.2R R 77 cs-19 0.8L 8 8 0.8L

2 2
10
11
12
13
14
15
16
1
2
3
4
5
6
7

9 NC
8
1

4
5

8
2

6
1

4
5

9
2

6
1

4
5

10
11
12
13
14
15
16
17
18
19
20
3

9
2

9
10
11
12
3

9
10
11
12

37A 1.2B 2 L 0.8L 9 9 0.8L

3 3 10 10 NC
53 0.8WOr R 77 0.8Gr 10 10 0.8Gr
4 4
REMOCON GND

11 11 NC
ILLUMINATION
ILLUMINATION

CAR AUDIO(+)
REMOTE SIG+

CAR AUDIO(-)

1 Gr 0.8Gr 11 11 0.8Gr
REMOTE SIG-

SPK FRT RH+

SPK FRT LH+

SPK FRT RH-

GPS CONNECTOR
SPK FRT LH-

12 12 NC
REMOCON+
GND(SEND)

GND(JACK)

GND(MAIN)
GND(JACK)

POWER IG
POWER IG

POWER IG

TEL MUTE
USB(GND)

BACK UP+
TEL MUTE
RX(SEND)
TX(SEND)
RX(JACK)

TX(JACK)
USB(+5V)

H/F IND+

13 13 NC
USB(D+)

H/F IND-

ANT 12V

CS-4
USB(D-)

0.8Br 15 12
SPK(+)

0.8B
SPK(-)
IND(+)

B C A 14 GND
MIC+

MIC+

14
SIG+

MIC-
GND

MIC-
TX/S

TX/S
GND

GND

GND
SIG-

ACC

ILL+

13 13
ILL-

0.8V 0.8V
NC
RX

NC

NC

NC

NC

NC
NC
TX

HARNESS RH SIDE B 15 15 NC
0.8G 14 14 0.8G
USB&SOCKET ASSY REMOTE ASSY HANDS FREE RADIO AND CD / MP3 PLAYER A C 16 16 SAFETY SOL
SAFETY SW 20W94EL02

4-4
·ELECTRIC CIRCUIT (3/3)
MULTI-FUNCTION SW

LEFT LEVER RIGHT LEVER

COM

COM

COM

COM

GND
TR2

TR1
INT

WA
HO

COM
B+
WI

Lo

Lo
Hi

Hi

N
R
F
L
12
(2)

(1)

(4)
HEAD LAMP

10

11

6
5

9
8
7

7
5
3

4
FRONT RH FRONT LH REAR RH REAR LH POWER HEAD LAMP LO HEAD LAMP HI WORK LAMP CABIN LAMP FUEL HEATER

3
1

1
11
12

11
12
10

10
1

1
8
9

8
9
3
4

3
4

3
4
2

5
7

7
6

4
2

2
CR-14
CR-13
CR-84
CR-81

CR-78

CR-46
CR-83
CR-82

CR-4

CR-9
1

1
4

4
2
3

2
3

2
3

2
3

2
3

2
3

2
3

2
3

2
3

2
3
27
17

09

16
15
14
13
12
11
10
27
26
08
25
07

27
06
05
04
27
23
03
02
01
0058.0332

0.8BrW
0.8Gr

0.8GrW
0.8Y
0.8Or
0.8Or

0.8BrW

0.8RW
0.8VW
0.8Or
0.8Or

0.8BW
0.8Or
0.8Or
HARZARD

0.8L
0.8Br
0.8L

0.8BrW
0.8G

0.8Or
1.2Or

2.0Br
0.8R
14 0.8YW

2RW

0.8V
2.0Y
0.8Y
2RG
1.2Or
1.2V
25A 0.8L

2R
1.2L

2V
1.2B
1.2R
7A 0.8B
26A 1.2V

1.2V
10
01 CN-97

11K
11L

11H

11E
11F
11J

19A
20
24

11A

3A
18

17
23
1

22
7

12
19

13
9

25
8 1 GND

16
11
21

2
3
26

1
15

10

26

6A
02

9
7

5
4
3 8 24 2 2 REV RY.
03
2 7 35 3 3 MCU CN-53
1 04
6 26 4 4 FWD RY.
6 05
5 5 08 5 5 TRAVEL SPEED RY.
4 06
4 6 6 MCU CN-53
07
3 25 7 7 FUSE 24V
08
2 08 8 8 FLASHER UNIT
09
1 9 9 HORN RY.
10 NO.
10 10 WIPER MOTOR CONTROLLER CN-151 DESTINATION
11 1 0.8GrW
1 1 FROM CABIN LAMP SIG
11 11 NC 2 2.0V
12 2 2 TO CABIN LAMP
12 HEAD LAMP RY. 3 2.0R
12 3 3 CABIN LAMP FUSE
4 0.8VW
4 4 FROM WORK LAMP SIG
5 2RG
5 5 TO WORK LAMP
6 2RW
13
CN-98 6 6 WORK LAMP FUSE
7 1.2B
1 1 HEAD LAMP POWER RY. 7 7 EARTH
14 8 1.2Or
8 8 TO HEAD LAMP HI
2 2 HEAD LAMP Hi RY. 9 0.8BrW
15 9 9 FROM HEAD LAMP HI SIG
3 3 WIPER MOTOR CONTROLLER 10 1.2R
10 10 TO HEAD LAMP LO
16
4 4 WIPER MOTOR CONTROLLER 11 11 NC
36 17 11 1.2Or
12 12 SOL FUSE
A 5 5 WIPER MOTOR CONTROLLER
18 18
B 6 6 MCU CN-53 CN-152
19 19 12 0.8V
1 1 FUEL HEATER SIG
C 7 7 MCU CN-53 13 2.0Br
20 20 2 2 TO FUEL HEATER
D 8 8 MCU CN-53 14 0.8YW
21 3 3 FROM HEAD LAMP LO SIG
15 0.8BrW
9 9 MCU CN-53 4 4 FROM HEAD LAMP SIG
22 16 0.8L
10 10 MCU CN-53 5 5 TO REAR LH SOL
17 0.8Y
6 6 TO REAR RH SOL
18 0.8BrW
7 7 TO FRONT LH SOL
19 2.0Y
8 8 FUEL HEATER FUSE
23
CN-99 20 0.8Gr
9 9 TO FRONT RH SOL
1 21 0.8BW
1 MCU CN-53 10 10 FROM REAR LH SIG
24 22 0.8Br
2 11 11 FROM REAR RH SIG
2 FUSE 24V 23 0.8G
25 12 12 FROM FRONT LH SIG
3 3 REAR COMBI LAMP 24 0.8L
26 13 13 FROM FRONT RH SIG
4 25 2.0L
4 REAR COMBI LAMP 14 14 HEADLAMP FUSE
27 25 2.0L
5 5 GND 15 15 NC
37 28
A 6 6 MCU CN-52 RELAY BOARD HARNESS
OFF 38 29
B 7 7 MCU CN-52
ON 21 30
C 8 8 FUSE 24V
AUTO 22
D 9 9 NC
26

18

28

27

14

29

25
10 10 NC
11 11 NC
12 12 NC
35
13 13 GND
36
14 14 GND
37
15 15 GND
38
16 16 MCU CN-53

27 27
30 30

DESTINATION NO. CN-155

ROr
CAN Hi 1 1
RW
CAN Lo 2 2
BOr
NC 3 3
BOr
NC 4 4
V
GND 5 5
G
BATT. POWER 6 6
G
GND 7 7
CD-69 CN-15 NO. DESTINATION 8
G
1.2ROr 1 POWER IG 8
SUPPLY A 1 1 MCU POWER 24V
0.8BW 2 HARNESS LOWER
ATT.

SIG B 2 2 MCU
1.2BW 3
RETURN C 3 3 MCU
CN-236 4 4 MCU GND
1.2LOr 4
PRESS

1 5 5 MCU
ATT.

1.2Or 5
2 6 6 FUSE
6
CN-149 7 7 MCU
SAFETY

1.2Br 7
1 8 8 MCU
CD-43
SOL.
ATT.

1.2ROr 2A 1.2Or
2 9 9 NC
A
PRESS

SUPPLY
1.2L 1 10 10 NC
SIG B CN-237
CONFLUX
P2

1.2BW 4A 1.2GW 11
RETURN C CN-1 NO. DESTINATION CN-241 1 11 NC
1 YOr 26 1.2Or 12
RIGHT

12 NC
ATT.

CD-42 1 1 MCU 1 2
TILT

1.2ROr 2 2 YOr 26
SUPPLY A 2 2 MCU POWER 24V 2
PRESS

1.2G 3 3
SIG B 3 3 MCU CN-240 CN-14 NO. DESTINATION
P1

1.2BW 4 4 YOr 26 ROr

HARNESS TWO-WAY
LEFT

RETURN C 4 4 MCU GND 1 1 1 NC

TILT

5 YOr 26 RW
5 5 MCU 2 2 2 FUSE
CD-44 BOr
1.2ROr 2E 6 6 NC CN-239 3 3 NC
ROTATE ROTATE

SUPPLY A YOr BOr

PRESS

1.2G 5 6 26
RIGHT

7 7 MCU 1 4 4 REAR WORK LAMP

SIG B

84
7 YOr 26 V CN-15 NO. DESTINATION

73
1
4E
P3

72
1.2BW

13
13

42
43
59
39
75
81
8 8 MCU 2 5 5 GND CD-69
RETURN C G 1.2ROr 1
9 9 NC CN-238 6 6 NC SUPPLY A 1 1 MCU POWER 24V

0.8BrW
0.8ROr
1.2BW
ATT.

0.8LW
YOr 26 G

0.8Gr
2 MCU

0.8W
SIG B 2

0.8G
10

1.2R
1.2R
1

0.8V
0.8B

0.8Y
CN-75 10 NC 7 7 NC
LEFT

1.2BW 3

SH
841
846
571
1.2Br 6 YOr 26 G
PUMP

1 2 8 RETURN C 3 3 MCU
MAIN

8 NC
1.2RW 7
2 4 4 MCU GND

CN-156
HARNESS PUMP PS 5 MCU

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
5

1
2
3
4
5
6
7
8
9
G
HARNESS ATT

V
Or
6 6 FUSE
7 MCU

CD-46
7

SPEED SENSOR SIG.

8 8 MCU

1
2
3

POWER BATT 24V

POWER BATT 24V

GND SERIAL COM

POWER 24V OUT
9 9 NC

GND SENSOR
10 10 NC

CAN SHIELD
CN-66
4

SERIAL RX
1.2B

POWER IG

SERIAL TX
GND MAIN
GND MAIN
1 11 11 NC

CAN2 Lo
CAN2 Hi
1.2Br 5
2 12 12 NC SPEED SENSOR

D IN

D IN

A IN

A IN

A IN
A IN

NC
NC
NC
NC

NC
NC
NC
NC
NC

NC
NC

NC
NC

NC
BREAKER SOL

NC

NC

NC
NC
NC
NC
MTCU
HARNESS BREAKER

20W97EL03

4-5
MEMORANDUM

HYUNDAI HEAVY INDUSTRIES CO., LTD

CONSTRUCTION EQUIPMENT DIV.

4-6
1. POWER CIRCUIT
The negative terminal of battery is grounded to the machine chassis through master switch.
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 Fusible link [CN-60] Master switch [CS-74A]
Fuse box [No.1] I/conn [CN-3 (14, 15)] Engine ECM [CN -94 (3, 4)]
Fuse box [No.2] I/conn [CN-5 (46)] I/conn [CN -10 (3)] Room lamp [CL-1 (2)]
Door switch [CS-1]
Radio & CD/MP3 player [CN-27 (8)]
Fuse box [No.3] MCU [CN-51 (2)]
Slip spring [CN-155 (6)]
Fuse box [No.4] Master switch [CS-74B] l/conn [CN-5 (36)] Start switch [CS-2 (1)]
GPS [CN-125A (1)]
GPS connection[CN-125(1)]
Power relay [CR-35 (30)]
ECM power relay [CR-45 (3)]
Fuse box [No.5] l/conn [CN-11 (5)] AC & Heater controller (3)
Blower relay (3)
Fuse box [No.6] I/conn [CN - 5 (18)] I/conn [CN -17 (5)] Wiper motor controller
[CN-141 (7)]
Wiper motor [CN-21 (4)]
Fuse box [No.7] I/conn [CN - 5 (6)] Cluster [CN -56 (1)]
Hour meter [CN-48 (B+)]
Fuse box [No.8] I/conn [CN - 5 (32)] Flasher unit [CR -11 (2)]

I/conn : Intermediate connector

2) CHECK POINT

Engine Start switch Check point Voltage

Η - GND (battery 1EA) 10~12.5 V
Θ - GND (battery 2EA) 20~25 V
OFF OFF
Ι - GND (battery 2EA) 20~25 V
Κ
- GND (fusible link) 20~25 V
ö GND : Ground

4-7
 CR-45
1.2B
1
0.8WOr 4 5 1

ECM
CN-141 CS-74 2
R 0.8W
CONTINUE 24V 7 CN-48 3
WIPER MOTOR CONTROLLER S 4

POWER RY

MASTER SW
h 0.8OrW 3 2
CN-17 - 5
0.8RW

2
1
CN-21 1 B+

CS-74
2W CR-35
1 2

HOUR METER
3 30
2 3 CN-5 0.8WOr 87a 87 85
86
3 4 1 2RW
5 87
R R 0.8R

0.8RW
2W
2W
4 2 1.2B
5 85
4
5 6 3 87a 30 86

POWER RY

8
7
6
5
4
3
2
1
CN-56
6 2 6 7 4
M
5
POWER CIRCUIT

RR
RR
RR
RR
RR
RR
RR
RR
8 0.8RW 0.8RW
6 CN-36
WIPER MOTOR 7 3W ECM 30A
1

TX

RX
8 0.8Y ROOM LAMP/CASSETTE 10A

SIG_2
GND
CN-125A

SIG_3

IG 24V
0.8W 2

BATT.24V
BATTERY POWER 1 9 1.2R MCU 20A

CAMERA SIG

CLUSTER
10 3
RMS 2W START KEY 30A
16 4
2R AIR CON/HEATER 20A
6 17 5
5

C ST
CS-2 0.8R 0.8R 0.8R WIPER 10A
18 6
6 0.8RW 10A
5R

CLUSTER
19 7
3 5 10A
0.8R TURN LAMP
0.8OrW

2 20 8

B
1

ACC BR
4 5A
21 ECM

2W
9

H
4 3

1.2W
22 MCU CONT. 20A

0, I
2 10
1.2W 23 CLUSTER 10A

START KEY SW
2RW

1 CR-11 11

I 0 H
24 SWITCH PANEL 10A

9
8
7
5
4
1

6
3

15
14
13
12
11
10
L 1 CN-3 12
31

1.2W
G 1.2R 0.8R CASSETTE 10A
13

0.8WOr
B 2 32 CONVERTER 20A

2W
CN-27 14

1.2W
E 3 33
WORK LAMP 30A

3
4
1
2
ACC 1 15
34

GPS
CABIN LAMP 30A

FLASHER UNIT
ILL- 2
35 16

4
1

3
1.2W 1.2W HEAD LAMP 20A
GND 3

CN-125
36 17
WIPER 20A

R
SPK FRT RH- 4 37 18

4-8
30A
2B
2B

SPK FRT LH- 5 FUEL HEATER

2W
2W

38
19
TEL MUTE 6 39 START, STOP 20A
20
ANT 12V 7 45 HORN 10A
2W

3
4

2
1

Y 0.8Y 0.8Y 21
BACK UP+ 8 46 30A
CN-94

AC & HEATER
22
ILL+ 9 47 SAFETY SOL. 10A
23

0.8Y
NC 10 48 EPPR 20A
ENGINE ECM
BATT (-)
BATT (-)

57 24
BATT (+)
BATT (+)

SPK FRT RH+ 11 TRAVEL SOL. 20A

5
4
1

9
8
7
6
3
58 25

12
11
10
REMOCON+ 12 20A
0.8WOr 0.8WOr CIGAR, SEAT HEAT

CN-10
59 26

RADIO & CD/MP3 PLAYER

REMOCON GND 13 20A
OPTION(BEACON)
60 27
SPK FRT LH+ 14 20A
SOLENOIDE
(BATTERY (-) TERMINAL)

NC 15 28

Gr

Gr
20A

0.8Y
SOLENOIDE
CR-1
3

GND 16 CN-11 29
ILLUMINATION 10A
BATT RY

1 30

1
2
ILLUMINATION 10A

CL-1
2 31
FUSE BOX

CS-1
3

DOOR SW
4

ROOM LAMP
2

2Y

(AUTO)
BATTERY(+) 3 5
CS-74
60R
5R

6
2
1

AC & HEATER
2

1
2

CONTROLLER
CN-60
CN-95

1
CS-74

8
FUSIBLE LINK
5R

CN-51 1.2R
5R
MASTER SW

5R
5W
5W

(12VX2)

POWER BATT_24V 2
BATTERY

MCU
1 2 1
4

60B

2
1

0.8B
0.8Or

0.8BW
3 4 4

BLOWER RY
8
7
6
5
4
3
2
1
CN-155
CN-245
5B
2
5W

SPARE
GND_1
SPARE

20W94EL04
GND_2
1

CAN_Hi
CAN_Lo

SLIP SPRING
POWER_2
POWER_1
PTC POWER
2. STARTING CIRCUIT
1) OPERATING FLOW
Battery(+) terminal Battery relay [CR-1] Fusible link [CN-60] Master switch [CS-74A]
Fuse box [No.4] Master switch [CS-74B] I/conn [CN-5(36)] Start switch [CS-2(1)]
(1) When start key switch is in ON position
Start switch ON [CS-2 (2)] I/conn [CN-5 (60)] Battery relay [CR-1]
Battery relay operating (all power is supplied with the electric component)
Start switch ON [CS-2 (3)] GPS conn [CN-125 (2)→(4)] I/conn [CN-5 (59)]
Power relay [CR-35 (86) → (87)] Fuse box [No.10]
ECM power relay [CR-45 (2) → (5)] Fuse box [No.8]
(2) When start key switch is in START position
Start switch START [CS-2 (6)] I/conn [CN-5 (35)] Anti-restart relay [CR-5 (2) → (5)]
l/conn [CN-2 (7)] Start relay [CR-23]

2) CHECK POINT

Engine Start switch Check point Voltage

Η - GND (battery)
Θ - GND (start key)
Ι - GND (battery relay M4)
OPERATING START Κ - GND (starter B+) 20~25V
Λ - GND (starter M)
Μ - GND (start relay)
Ν - GND (battery relay M8)

4-9
 CN-125 CN-125 0.8WOr
4 4
CR-45
3 3 1.2B

GPS
R 1.2R 1
2 2 0.8WOr 4 5 1

ECM
1.2W 2
CS-74
1 1 CN-5 0.8W
1
3
CN-125A 4
2

MASTER SW
0.8OrW

POWER RY
5 3 2
BATTERY POWER 1 3
0.8R

2
1
KEY "IG" 2 4 CR-35

CS-74
2W
NC 3 30
5 0.8WOr 87a 87 85
RX232(1)-TX 4 86
6 2RW
5 87
RX232(1)-GND 7

2W
2W
CN-16B 1.2B
85
RX232(2)-RX 6 8
1 87a 30 86 POWER RY
7 9 2.5k

RMS
RX232(2)-TX
2
RX232(2)-GND 8 17
3
RX232(1)-RX 9 18 2.5k
4 CN-36
19
STARTING CIRCUIT

NC 10 ECM 30A
20 5 1
MAIN GND 11 0.8Br ROOM LAMP/CASSETTE 10A
21 6 2
MAIN GND 12 MCU 30A
22 3
2W START KEY 30A
23 4
6
5 20A

ST C
CS-2 24 AIR CON/HEATER
0.8BOr 5
10A
5R

6 31 WIPER
2RW

6
3 5 32 CLUSTER 10A
0.8OrW

2 7

BR ACC
1 4 33 5A
1.2R ECM
8

H
4 3 34 20A
0.8Or 0.8BOr 0.8BOr MCU CONT.
9

0, I
2 35 20A
1.2W 1.2W 1.2W MCU_EPPR
1 36 10

START KEY SW
10A

H 0 I
CN-52 SWITCH PANEL
37 0.8Br 11
ANTI-RESTART RY 15 CASSETTE 10A
57 12

2
CLUSTER 10A
58 MCU 13
0.8WOr 0.8WOr
CONVERTER 20A
59 14
0.8Or 0.8Or 30A
60 WORK LAMP
CN-51 15
0.8W CABIN LAMP(OPT) 30A
ALT LEVEL 39 16
WIPER 10A
MCU 17

4-10
HEAD LAMP 20A
18
2Y FUEL HEATER 30A
19
0.8BW START,STOP 20A
20
5W

BOr
HORN 10A

0.8W
0.8GrW

0.8BOr
21
0.8BOr
0.8Br

20A
0.8BW
0.8BOr

AC& HEATER
22

5
4
1

9
8
7
6
3
10A

12
11
10
SAFETY SOL
4
2
3

5
1

CN-2
23
CR-5

EPPR 20A
24
TRAVEL SOL. 20A

1.2B
1.2W
25

1.2GrW

1.2BOr
0.8Y
CIGAR LIGHTER 20A

0.8ROr
3 2
4 5 1

0.8BOr

0.8GrW
1.2G
26

1.2G

0.8Or
1.2B

0.8W
1.2G
OPTION(BEACON) 20A
27
1.2B
1.2G

SOLENOIDE 20A

1.2GrW
4
2
3

5
1
28

1
1

2
2
2
1
ANTI-RESTART RY

PRE-HEAT 10A

CR-36
DO-2
DO-3

DO-1
29
FUEL P/P 20A
DIODE

DIODE
DIODE
30

1.2B
10A

PRE-HEAT
SPARE

6
1.2BOr
31

3 2
4 5 1
CR-1
FUSE BOX

0.8ROr
0.8BOr

CR-24
7

BATT RY

1
2
CS-74

9
8
7
5
2

4
1
5R

6
3

15
14
13
12
11
10

15R
15R
CN-3
1

GLOW PLUG RY
1
2

1
2

CR-23
CN-60
CN-95

2
CS-74

60R
5R

START RY
0.8ROr
0.8BOr
MASTER SW

5R
5R
5W
5W

FUSIBLE LINK

15R

CN-80
5

1.2W
CN-93

GLOW PLUG
(12VX2)

4
BATTERY

AIR-HEATER OUTPUT 40

I
B+
AIR-HEATER RETURN 42

B+
CN-45

GND
CN-74
60B

STARTER

~3
M

20W94EL05
G

U
CN-245

ALTERNATOR
5B
2
5W
1
PTC POWER
3. CHARGING CIRCUIT
When the starter is activated and the engine is started, the operator releases the key 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 "I" terminal I/conn [CN-2 (9)] MCU alternator level [CN-51 (39)]
Cluster charging warning lamp (Via serial interface)

(2) Charging flow

Alternator "B+" terminal Battery relay(M8) Battery(+) terminal
Fusible link [CN-60] Master switch [CS-74A]
Fuse box

2) CHECK POINT

Engine Start switch Check point Voltage

Η - GND (battery voltage)
Θ - GND (battery relay)
Run ON Ι - GND (alternator B+ terminal) 20~25V
Κ - GND (alternator I terminal)
Λ - GND (MCU)

ö GND : Ground

4-11
 CN-51
GND_MAIN 1
POWER BATT_24V 2
POWER IG 3
POWER_24V OUT 4
GND_PRESSURE 5
POWER OUTPUT_5V 6
GND_5V 7
ACCEL ACT(+) 8
ACCEL ACT(-) 9
GND_MAIN 10
CAN_SHIELD 11
PROGRAM DUMP 12

0.8L
TACHO SENSOR- 13

0.8Y

SH
TACHO SENSOR+ 14 CN-36
PWM OUTPUT2 15 ECM 30A

5
4
1

9
8
7
6
3
0.8L

60
59
58
57
24
23
22
21
20
19
18
17
0.8Y
PWM OUTPUT1 16
1

CN-5
ROOM LAMP/CASSETTE 10A
PARKING RY OUT 17 2

SH
MCU 30A

8
7
6
5
4
3
2
1
RAMLOCK LAMP 18

0.8L
0.8Y
3

CN-56
HOUR METER 19 30A
START KEY
CHARGING CIRCUIT

TRAVEL BUZZER 20 4

RR

RR
RR

RR
RR

RR
RR
RR
20A

MCU
CAN1 Hi-ECM 21 AIR CON/HEATER
5
CAN2 Hi-APTC 22 10A
5R

0.8 WIPER
RS485+(TX)-CLUSTER 23 6
CLUSTER 10A
RS232C1_TX-HRDT 24

TX

RX
7

SIG_2
GND
SIG_3

IG 24V
RS232C2_TX-RCM 25 ECM 5A

BATT.24V
REVERSE PWM IN01 26 8

CLUSTER
CAMERA SIG
MCU CONT. 20A
REVERSE PWM IN02 27 9
TILT SIG. 28 MCU_EPPR 20A
ROTATE SIG. 29
10
SWITCH PANEL 10A
REVERSE_A_IN 30 11
CAN1 Lo-ECM 31 CASSETTE 10A
12
CAN2 Lo-APTC 32 10A
0.8Y CLUSTER
RS485-(RX)-CLUSTER 33 13
CONVERTER 20A
RS232C1_RX-HRDT 34
14
RS232C2_RX-RCM 35 WORK LAMP 30A
HYD. TEMP SENDER 36 15
CABIN LAMP(OPT) 30A
WATER TEMP SENDOR 37 16
FUEL LEVEL SENSOR 38 WIPER 10A
0.8W
ALT. LEVEL 39
17
HEAD LAMP 20A
GOV. POTENTIO SIG. 40 18
FUEL HEATER 30A

5
19
START,STOP 20A

4-12
BOr
20

0.8W
5W

HORN 10A
21
AC& HEATER 20A
22

5
4
1

9
8
7
6
3
10A

12
11
10
SAFETY SOL

CN-2
23
SEAT 20A
24
SOLENOIDE 20A

1.2B
1.2W
25

1.2BOr
CIGAR LIGHTER 20A
26

1.2G
0.8W
BEACON LAMP(OPT) 20A
27

1.2B
1.2G
SOLENOIDE 20A
28

1
2
10A

1.2B
PRE-HEAT

DO-2
29

1.2BOr
FUEL P/P 20A

DIODE
30
SPARE 10A

1
2
31
CR-1
FUSE BOX

BATT RY

CS-74

CR-23
5R

1
1

START RY
1
2

1
2
CN-60
CN-95

2
CS-74

60R
5R

15R

1.2W
MASTER SW

5R
5R

FUSIBLE LINK
5W
5W

4
3
M

I
B+

B+
(12VX2)

CN-45
BATTERY

GND
CN-74
STARTER

~3
M

U
60B

ALTERNATOR
CN-245
5B
2

20W94EL06
5W
1
PTC POWER
4. HEAD AND WORK LIGHT CIRCUIT
1) OPERATING FLOW
Fuse box (No.17) Head light relay [CN-152 (14)→(4)] I/conn [CN-98 (1)]
Multifunction sw left lever [(4)→(5)] I/conn [CN-97 (12)] Head light relay [CN-152 (3)]
Fuse box (No.15) Work light relay [CN-151 (6)]

(1) Head light switch ON

Head light switch ON [CN-116 (2)] l/conn [CN-5 (49)]
Head light power relay [CN-152 (15) → CN-151 (10)] Head light ON [CL-3 (1)], CL-4 (1)]

(2) Work light switch ON

Work light switch ON [CN-116 (3)] l/conn [CN-5 (50)] Work light relay [CN-151 (4) → (5)]
l/conn [CN-12 (1)] Work light ON [CL-5 (2), CL-6 (2)]

CHECK POINT
2)
Engine Start switch Check point Voltage
Η - GND (fuse box)
Θ - GND (switch power output)
Ι - GND (head light relay)
Κ - GND (head light)
STOP ON 20~30 V
Λ - GND (fuse box)
Μ
GND (switch power output)
Ν
- GND (work light relay)
Ξ
- GND (work light)

ö GND : Ground

4-13
HEAD AND WORK LIGHT CIRCUIT
FUSE BOX

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
3
4
5
6
7
8
9
30A

20A
30A
20A

20A

20A
30A
30A

20A
30A
20A

30A

20A
20A
20A
20A
20A

10A
ROOM LAMP/CASSETTE 10A

10A
10A

10A
10A
10A

20A

10A

10A

20A

10A
10A
5A

CIGAR, SEAT HEAT

OPTION(BEACON)
AIR CON/HEATER

SWITCH PANEL

ILLUMINATION
ILLUMINATION
FUEL HEATER

AC & HEATER
START, STOP

SAFETY SOL.

TRAVEL SOL.
CONVERTER
WORK LAMP
CABIN LAMP
TURN LAMP

SOLENOIDE
SOLENOIDE
MCU CONT.

HEAD LAMP
START KEY

CASSETTE
CLUSTER

CLUSTER
WIPER

WIPER
CN-36

HORN

EPPR
MCU
ECM

ECM

2RW

1.2L
5 1
CR-15
1
4 5 1 0.8L CN-12 CL-5
2 2B B
1.2L 2 1
3 2RG RG
1 2
4
3 2 5 WORK LAMP
B
ILLUMINATION
RY 8 RG
1
2
CL-6

CN-97 CN-151
INT (2)
1 1
7 1 CABIN LAMP RY(COIL)
2 CABIN LAMP RY
COM (1) 2 2
3 CABIN LAMP RY
3 3 0.8VW
HO (4) 4 WORK LAMP RY(COIL)
4 4 2RG
5 WORK LAMP RY
5 2RW
6 WORK LAMP RY
WA 7 6 1.2B
0.8L 7 RELAY EARTH
7 1.2Or
Hi 1 8 HEAD LMP RY HI
8 0.8BrW
9 HEAD LMP RY HI(COIL)
9 1.2R
COM 8 10 HEAD LMP RY LO
LEFT 10
11 NC
LEVER 11
0.8YW 12 OUTRIGGER RY
1 12
WI 6
2
HARNESS RY
3 CN-98
Lo 2 1.2V CN-152
4 1
0.8BrW 1 FUEL HEAT RY(COIL)
COM 4 5 2
2 FUEL HEAT RY
6 3 0.8YW
Lo 5 3 HEAD LMP RY LO(COIL)
7 4 0.8BrW
4 HEAD LMP RY(COIL)
8 5
5 REAR LH RY
9 6
6 REAR RH RY
10 7
7 FRONT LH RY
Hi 3 11 8
8 FUEL HEAT RY
12
B+ 12
9
10
3 9 FRONT RH RY
L 9 10 REAR LH RY(COIL)
11 REAR RH RY(COIL)
COM 10 CN-99 12 FRONT LH RY(COIL)
R 11 1
13 FRONT RH RY(COIL)
2 2L
14 HEAD LMP RY
3 2L
15 HEAD LMP POWER RY
6 1 4
1.2B HARNESS RY
5 2 5
3 6 CL-4
F 4 1.2R
4 7 1 Lo
N 2 1.2Or
5 8 2 Hi
R 8 1.2B
9 3 E
RIGHT COM 9
6
LEVER 7 10 HEAD LAMP-RH
TR2 3 11
8
9 12
4
GND 1 CL-3
10 13 1.2R
1 Lo
11 14 1.2Or
TR1 7 2 Hi
15 1.2B
12 3 E
16
MULTI-FUNCTION SW HEAD LAMP-LH
0.8BrW
0.8VW
CN-5

41
42
43
44
45
46
47
48
49
50
51

56
57
58
59
60
3

6
1

4
5
2

0.8BrW
0.8VW

2 6
CN-116

10
11
12
3

6
7
8
9
1

4
5
2
WORK LAMP
CABIN LAMP
HEAD LAMP

DOZER PS
PRE-HEAT

Front/Right

Rear/Right
Front/Left

Rear/Left

POWER
GND
ILL

SWITCH PANEL
20W94EL07

4-14
5. BEACON LAMP AND CAB LIGHT CIRCUIT
1) OPERATING FLOW
Fuse box (No.27) I/conn [CN-5 (33)] Beacon lamp switch [CN-23 (8)]
Fuse box (No.16) Cab light relay [CR-9 (30, 86)]
(1) Beacon lamp switch ON
Beacon lamp switch ON [CS-23 (4)] Switch indicator lamp ON [CS-23 (11)]
l/conn [CN-10 (10)] Beacon lamp ON [CL-7]
(2) Cab light switch ON
Cab light switch ON [CN-116 (4)] I/conn [CN-5 (55)] Cab lamp relay [CN-151 (1) → (2)]
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)]

2) CHECK POINT
Engine Start switch Check point Voltage

Η - GND (fuse box)

Θ - GND (switch power input)
Ι - GND (switch power output)
Κ - GND (beacon lamp)
STOP ON 20~25V
Λ - GND (fuse box)
Μ - GND (cabin light relay)
Ν - GND (switch power output)
Ξ - GND (cab light)

ö GND : Ground

4-15
 12

M
3
4
9

-LH
12
10

-RH
CL-9
CL-8
CL-7
CN-36

2
2

1
1
ECM 30A

CAB LIGHT
1

CAB LIGHT
7
8

2
11
ROOM LAMP/CASSETTE 10A
2

10
11

5
9
20A

12

4
8

1
2
3
6
7
MCU

1.2B
1.2V
1.2B
1.2V
1.2B

BEACON LAMP
3

CS-23

1.2BrW
START KEY 30A

8
8
BEACON LAMP SW
4
AIR CON/HEATER 20A

0.8B
5

1.2Br
10A

1.2BrW
0.8BrW
WIPER
6
CLUSTER 10A

3
7
TURN LAMP 10A
8
ECM 5A
9
MCU CONT. 20A

2
10
CLUSTER 10A

5
4
1

9
8
7
6
3

12
11
10
11

CN-10
SWITCH PANEL 10A
12
CASSETTE 10A
13

1.2B
1.2B

1.2V
1.2V
5
CONVERTER 20A
14

1.2BrW
WORK LAMP 30A
15
2R CABIN LAMP 30A
CN-5 16
HEAD LAMP 20A
1 17
WIPER 20A
2 18
FUEL HEATER 30A
3 19
4 START, STOP 20A
20
5 HORN 10A
21
6 AC & HEATER 30A
BEACON LAMP AND CAB LIGHT CIRCUIT

22
7 SAFETY SOL. 10A
23
29 EPPR 20A
1.2B 1.2B 24
30
1

TRAVEL SOL. 20A

1.2B 1.2B

4-16
31 25
CIGAR, SEAT HEAT 20A
32 26
1.2Br 1.2Br 1.2Br OPTION(BEACON) 20A
33 27
1.2V 1.2V SOLENOIDE 20A
34 28
SOLENOIDE 20A
35 29
ILLUMINATION 10A
36 30
37 ILLUMINATION 10A
1.2V 1.2V 31
FUSE BOX

38
39

CN-116 40

7
ILL 1 52
HEAD LAMP 2 53
WORK LAMP 3 0.8GrW 54 0.8GrW
0.8GrW
CABIN LAMP 4 55
56
2V

PRE-HEAT 5
2R

57
6

Front/Left 6
0.8GrW

Front/Right 7 58
Rear/Left 8 59
Rear/Right 9 60
9
8
7
6
5
4
3
2
1

SWITCH PANEL
POWER
12
11
10

10
CN-151

GND 11
DOZER PS 12
NC

HARNESS RY
RELAY EARTH

OUTRIGGER RY
CABIN LAMP RY
CABIN LAMP RY

WORK LAMP RY
WORK LAMP RY

HEAD LMP RY HI

HEAD LMP RY LO

20W94EL08A
CABIN LAMP RY(COIL)

WORK LAMP RY(COIL)

HEAD LMP RY HI(COIL)

6. WIPER AND WASHER CIRCUIT
1) OPERATING FLOW
(1) Ke
Keyy switch ON
Fuse box (No.17) I/conn [CN-97 (7)] Multifunction sw left lever [12]
Fuse box (No.6) I/conn [CN-5 (18)] I/conn [CN-17 (5)] Wiper motor controller [CN-141(7)]
Wiper motor [CN-21(4)]
Fuse box (No.18) I/conn [CN-5 (24)] l/conn [CN-17 (4)] Wiper motor controller [CN-141 (6)]
Washer pump [CN-22 (2)]
(2) Wi
(2 Wiper
per switch ON : 1st step (Intermittent)
Wiper switch ON [Multifunction sw left lever (2)] I/conn [CN-98 (5)] I/conn [CN-5 (43)]
I/conn [CN-17 (8)] Wiper motor controller [CN-141 (10)→ (3)]
Wiper motor intermittently operating [CN-21 (6)]
(3) Wip
(3 Wiper
er switch ON : 2nd step (continual)
Wiper switch ON [Multifunction sw left lever (1, 2)] I/conn [CN-98 (3, 4)] I/conn [CN-5 (23)]
I/conn[CN-17(2)] Wiper motor controller [CN-141(2)→ (4)] Wiper motor operating [CN-21(2)]
(4) Was
Washer
her switch ON
Washer switch ON [Multifunction sw left lever (7)] I/conn [CN-97 (10)] I/conn [CN-5 (37)]
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 [Multifunction sw left lever (1, 2)] I/conn [CN-98 (3, 4)]
I/conn [CN-5 (23)] I/conn[CN-17 (2)] Wiper motor controller [CN-141 (2)→ (4)]
Wiper motor operating [CN-21 (2)]
(5) Auto parking (when switch OFF)
Switch OFF [Multifunction sw left lever OFF position] Wiper motor parking position by wiper motor controller

2) CHECK POINT
Engine Start switch Check point Voltage
Η - GND (fuse box)
24 V
Θ - GND (switch power input)
Ι - GND (switch power output)
STOP ON 0~5 V
Κ - GND (wiper power output)
Λ - GND (wiper power input) 24 V
Μ - GND (wiper motor) 0 or 24 V
ö GND : Ground

4-17
 LEFT

RIGHT
LEVER
LEVER

R
N
R
Hi
Hi

Lo
Lo
WI

B+
HO

COM
WA
INT

TR1
TR2

GND
COM
COM
COM

4
3

7
1
3
2
9
4
2
6
8
1
7

8
9
5

6
11
10
(4)
COM (1)
(2)

12

MULTI-FUNCTION SW
6
7
5
2

6
4
3

7
9
8
1

5
2

4
3

9
8
1
2

10
4
3
1

12
11

10

12
11
3
WIPER AND WASHER CIRCUIT

CN-36

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

10
12
11
10
ECM 30A

CN-98
CN-97
1
CN-5 ROOM LAMP/CASSETTE 10A
1 2

0.8L
20A

0.8W
0.8W

0.8Br
MCU
2 3
START KEY 30A
3 4
AIR CON/HEATER 20A
17 5
0.8R 0.8R 0.8R WIPER 10A
18 6
0.8V 0.8V CLUSTER 10A
19 7
TURN LAMP 10A
20 8
1

21 ECM 5A

4-18
6
CS-53 9
CN-21 22 MCU CONT. 20A
Or 0.8W 0.8W 10
3 1 23 CLUSTER 10A
R 0.8ROr 0.8ROr 11
2 24 SWITCH PANEL 10A
Gr 12
5 3 25 10A

B
R CASSETTE
4 26 13
4 G CONVERTER 20A

WIPER CUT SW
5 27 14
L WORK LAMP 30A
6 M 2 6 28
1

15
29 CABIN LAMP 30A

WIPER MOTOR
1.2B 1.2B 16
30 1.21 HEAD LAMP 20A
1.2B 1.2B 17
31 0.8ROr WIPER 20A

5
18
32 FUEL HEATER 30A
CN-141 33 19
G START, STOP 20A
FEED BACK 1 20
1

34
W HORN 10A
MOTOR DRIVE SIG 2 CN-17 35 21
L AC & HEATER 30A
MOTOR DRIVE- 3 1 36
R W 0.8W 0.8L 0.8L 22
MOTOR DRIVE+ 4 2 SAFETY SOL. 10A
37 23
B B 1.2B
GND 5 3 38 EPPR 20A
GrW GrW 0.8ROr 24
VCC 6 4 39 TRAVEL SOL. 20A
R R 0.8R 25
CONTINUE 24V 7 5 40 20A
V V 0.8V CIGAR, SEAT HEAT
WASHER P/P 8 6 41 26
L L 0.8L OPTION(BEACON) 20A
WASHER SIG. 9 7 42 27
Br Br 0.8Br 0.8Br 0.8Br SOLENOIDE 20A
INT. SIG 10 8 43 28
Or SOLENOIDE 20A
WIPER CUT SW 11 44 29
12 ILLUMINATION 10A
N.C 45
Gr 30
FEED BACK 13 ILLUMINATION 10A
58 31

WIPER MOTOR CONTROLLER

FUSE BOX

59

0.8L
0.8W
0.8V
0.8V

60

4
0.8ROr
0.8ROr

1
2
1
2

2
1

2
DO-16
CN-22
DO-16

20W94EL09
PUMP
M

DIODE
DIODE

WASHER
 4
1
3

6
8
8
7
6
5
4
3
2
1
NO.
CN-246

5
2
LAMP
USB(+5V) 1

CL-21
AC 24V

AC COMP
2

10
2
USB(D+)

3
7
9

2
6

4
5
8

1
HARZARD SW
BLOWER SIG

AIR-CON
USB(D-) 3

DESTINATION

ILLUMINATION
4

CONTROLLER B+
USB(GND)

REVERSE FAN SIG

CONTROLLER FAN
CONTROLLER GND

NUMBERPLATE
TX 5

BOr
0.8B
0.8Y
RX 6
0.5YOr

8
7
6
5
4
3
2
1
ILLUMINATION 7

9
8
7
4

6
2
1

12
11
10
CN-11

CN-2
GND 8 CL-2
TX/S 9 CN-36

0.8B
POWER IG 10

0.8Y
ECM 30A

USB & SOCKET ASSY

0.8YOr 1
GND(JACK) 11
ROOM LAMP/CASSETTE 10A
NC 12 2

CIGAR LIGHT
MCU 20A
3
ILLUMINATION CIRCUIT

CN-245 START KEY 30A

1
4
POWER IG 20A
AIR CON/HEATER
SIG+ 2 5
WIPER 10A
SIG- 3 6
CLUSTER 10A
NC 4 7
TURN LAMP 10A
H/F IND+ 5 8

9
8
7
4

6
2
1

16
15
14
13
12
11
10
H/F IND- 6 ECM 5A
9

CN-99
MIC+ 7 MCU CONT. 20A
10
MIC- 8 CLUSTER 10A
0.5YOr

REMOTE ASSY
11

0.8YOr
ILLUMINATION 9 SWITCH PANEL 10A
REMOTE SIG+ 10 12
CASSETTE 10A
REMOTE SIG- 11 13
CONVERTER 20A
GND 12 14
WORK LAMP 30A
CN-27 15
CABIN LAMP 30A
ACC 1 16
1.2L HEAD LAMP 20A
ILL- 2 17
WIPER 20A
FUSE BOX

4-19
GND 3 18
SPK FRT RH- 4 FUEL HEATER 30A
19
SPK FRT LH- 5 START, STOP 20A

0.8Y
20

0.8YOr

0.8BOr
TEL MUTE 6 HORN 10A
21
ANT 12V 7 AC & HEATER 30A
5

9
8
7
4

2
2

1
1

3
3

22

12

60
59
58
57
56
51
50
49
48
47
46
45
44
43
15
14
11
15
14
13
12
11
10

13
BACK UP+ 8 10A
CN-3

SAFETY SOL.

CN-5
0.8YOr 23
ILL+ 9 20A
EPPR
NC 10 24
0.8Y

TRAVEL SOL. 20A

0.8YOr

0.8BOr
SPK FRT RH+ 11 25
CIGAR, SEAT HEAT 20A
REMOCON+ 12 26

NEW CASSETTE RADIO

OPTION(BEACON) 20A
REMOCON GND 13 27
SOLENOIDE 20A
SPK FRT LH+ 14 28
NC 15 SOLENOIDE 20A
29
GND 16 0.8YOr ILLUMINATION 10A
30
0.8Y ILLUMINATION 10A
31
CN-116 0.8BOr
ILL 1
HEAD LAMP 2
WORK LAMP 3
CABIN LAMP 4

B
PRE-HEAT 5
0.8Y

0.85B

0.8Y
1.2L
0.8L

0.8YOr
1.2Or

0.8YOr
Front/Left 6
0.8BOr

Front/Right 7 6
5
4
3
1
2

3
1
2

3
1
2
6
5
4
3
1
2
4
2
3

5
1

Rear/Left 8
RY

CL-16

CL-25

CL-15

CL-24
CR-15

T
E
C
T
E
C
Rear/Right 9
TA

ST
TU

EH

TA

ST
BU

TU
NC

EH
BU

SWITCH PANEL
NC
POWER 10
2

GND 11
3
1 5 4

REAR COMBI-LH
DOZER PS
REAR COMBI-RH

12

FRONT COMBI-LH
FRONT COMBI-RH
ILLUMINATION

20W94EL10
 LEFT

RIGHT
LEVER
LEVER
4
1
3

6
8

R
N
R
Hi
Hi

Lo
Lo
WI

B+
HO

COM
WA
INT

TR1
TR2

GND
COM
COM
COM

4
3

7
1
3
2
9
4
2
6
8
1
7

8
9
5

6
11
10
(4)
COM (1)
(2)

12

MULTI-FUNCTION SW
7

5
2

HARZARD SW

6
7
5
2

6
4
3

7
9
8
1

5
2
10

4
3

9
8
1
2

10
4
3
1

12
11
3
7
9

10
2
6

4
5
8

12
11
1
CN-36
ECM 30A
1
COMBINATION LAMP CIRCUIT

ROOM LAMP/CASSETTE 10A

2
MCU 20A
3
START KEY 30A
4
AIR CON/HEATER 20A
5
WIPER 10A
6
CD-4 GrW CLUSTER 10A
SIG+ C 7
TURN LAMP 10A
RETURN B
8
SUPPLY A ECM 5A
9

STOP LAMP
MCU CONT. 20A

5
5
5

4
9
8
7
4
9
8
7
4

6
6
6

2
2
2

1
1
1

3
3
3

12
11
10
16
15
14
13
12
11
10
10
CLUSTER 10A
CN-99

CN-97

CN-131
11
SWITCH PANEL 10A

4-20
1.2B

12
0.8YW
0.8YOr

0.8Br
CASSETTE 10A

0.8Br
0.8GOr
CN-81 13
1.2G CONVERTER 20A
2 14
B 30A
1 WORK LAMP
15
30A

TRAVEL BZ
CABIN LAMP
16
CN-123 HEAD LAMP 20A
B 17
1 WIPER 20A
FUSE BOX

1.2G
2 18
FUEL HEATER 30A
19
START, STOP 20A
CN-122 B 20
V HORN 10A
1
V 21
2 AC & HEATER 30A
22
SAFETY SOL. 10A

REVERSE FORWARD
23
CR-30 EPPR 20A
86 30 87a 24
0.8Br L TRAVEL SOL. 20A
85 25
1.2G 20A
87 CIGAR, SEAT HEAT
0.8L 26
86 OPTION(BEACON) 20A
85 87 87a 0.8L 27
30

REVERSE RY
SOLENOIDE 20A
B

28
B
B

0.8V
0.8V
20A
YOr

SOLENOIDE

0.8Gr
0.8G

0.85Y
0.8G
0.8Gr

CR-29
YOr
0.85B

0.8Gr
0.8YW

29
0.8YW

86 30 87a ILLUMINATION 10A

0.8GOr 30
85 ILLUMINATION 10A
6
5
4
3
1
2

3
1
2

1
1
3
1

2
2
2
6
5
4
3
1

4
2
2

5
1
V 31
87

CR-45
CL-25

CL-24
CL-15
CL-16

CL-27
CL-26

0.8L
T
E
C
T
E
C
TA

86
ST
TU

EH

TA

ST
BU

TU
NC

EH
BU
NC

85 87 87a 0.8L

2
30

FORWARD RY
3
CN-51

1 5 4
0.8Gr
REAR COMBI-LH
REAR COMBI-RH

PARKING RY OUT 2
SIDE MARKER LH

SIDE MARKER RH
FRONT COMBI-LH

STOP LAMP RY
FRONT COMBI-RH

MCU
CR-66
0.8Gr
2 3 1
0.8L
2
0.8L
3

20W94EL11
4
1 4

PARKING
5
5
 CN-36
ECM 30A
1
CN-51 ROOM LAMP/CASSETTE 10A
GND_MAIN 1 2
1.2R 1.2R MCU 20A
POWER BATT_24V 2 3
1.2RW
POWER IG 3 START KEY 30A
POWER_24V OUT 4
4
AIR CON/HEATER 20A
GND_PRESSURE 5 5
POWER OUTPUT_5V 6 WIPER 10A
6
GND_5V 7 10A
CLUSTER
ACCEL ACT(+) 8 7
9 TURN LAMP 10A
ACCEL ACT(-)
8
GND_MAIN 10 0.8Or ECM 5A
SH 9
CAN_SHIELD 11
1.2RW MCU CONT. 20A
PROGRAM DUMP 12 10
TACHO SENSOR- 13 CLUSTER 10A
TACHO SENSOR+ 14
11
SWITCH PANEL 10A
PWM OUTPUT2 15 12
PWM OUTPUT1 16 CASSETTE 10A
PARKING RY OUT
13
17 CONVERTER 20A
CONTROLLER CIRCUIT

RAMLOCK LAMP 18 14
HOUR METER 19 WORK LAMP 30A
15
TRAVEL BUZZER 20 CABIN LAMP 30A
0.8LW

MCU
CAN1 Hi-ECM 21 16

5
4
1

6
3
0.8YW HEAD LAMP 20A
CAN2 Hi-APTC 22
17
FUSE BOX

CN-16B
RS485+(TX)-CLUSTER 23 WIPER 20A
RS232C1_TX-HRDT 24 18
FUEL HEATER 30A

0.8B
0.8W
RS232C2_TX-RCM 25

0.8Gr
19

0.8LW
0.8BW
REVERSE PWM IN01 26 START, STOP 20A
REVERSE PWM IN02 27
20
HORN 10A
TILT SIG. 28 21
ROTATE SIG. 29 AC & HEATER 30A
22
REVERSE_A_IN 30 10A
0.8G SAFETY SOL.
CAN1 Lo-ECM 31 23
0.8LW EPPR 20A

SH
CAN2 Lo-APTC 32

0.8G
24

0.8Or

SH
0.8LW
0.8BW
0.8LW

0.8B
RS485-(RX)-CLUSTER 33 20A

0.8W

0.8G
0.8Gr
TRAVEL SOL.

0.8LW
RS232C1_RX-HRDT 34 25
CIGAR, SEAT HEAT 20A
RS232C2_RX-RCM 35 26

9
8
7
5
9
8
7
5

2
2

4
1
4
1

6
6

3
3

15
14

5
4
1
12
11
10
13
12
11
10

60
59
58
57
24
23
22
21
20
19
18
17
HYD. TEMP SENDER 36 OPTION(BEACON) 20A

CN-2
CN-3

CN-5
WATER TEMP SENDOR 37 27
SOLENOIDE 20A
FUEL LEVEL SENSOR 38

SH
28

4-21
SH
0.8V

0.8B
0.8G

0.8W
20A

0.8Gr
0.8Or

0.8G
ALT. LEVEL 39 SOLENOIDE

0.8LW
0.8BW

0.8LW
GOV. POTENTIO SIG. 40
29
ILLUMINATION 10A
30
ILLUMINATION 10A
31

CN-244
0.8LW
1
0.8YW
2

CAN2
0.8G

0.8LW

1
2
4
7

5
8
9

3
6
10
CN-126
0.8Or
0.8YB
0.8RY
0.8BW

0.8BW

SH
1.2OrW

0.8B

0.8V
0.8G

0.8V
0.8W

0.8G
0.8B

0.8V
0.8Or
0.8Gr

0.8G
0.8LW
0.8BW
8
7
6
5
4
3
2
1

A
3

B
C

F
32
34

A
C
E
39
42
46
00
26

B
D
H
00
28
21

00
40
37
47

G
CN-93
CN-155

CN-173
00
NC

nc
nc
nc
RESISTOR

GND
CAN_Hi

CAN Hi
CAN_Lo

CAN Lo
SPARE
GND_1
SPARE

GND_2
CAN_Hi

RETURN
CAN_Lo

RS232 TX
SLIP SPRING

RS232 RX
POWER IG
CAN_Shield
POWER_2
POWER_1

RS232 P DUMP
COOLANT LEVEL
AIR-HEATER OUTPUT
AIR-HEATER RETURN

SERVICE TOOL
REMOTE ACCEL ON/OFF
REMOTE ACCEL RETURN

ACCEL POSITION SIGNAL

ACCEL POSITION SUPPLY

COOLANT LEVEL RETURN

20W94EL12
 CN-36
ECM 30A
1
CN-51 ROOM LAMP/CASSETTE 10A
GND MAIN 1 2
1.2R 1.2R MCU 20A
POWER BATT 24V 2 3
1.2RW
POWER IG 3 START KEY 30A
POWER 24V OUT 4
4
AIR CON/HEATER 20A
GND PRESSURE 5 5
POWER OUTPUT 5V 6 WIPER 10A
6
GND 5V 7 0.8RW 10A
CLUSTER
ACCEL ACT(+) 8 7
9 TURN LAMP 10A
ACCEL ACT(-)
8
GND MAIN 10 0.8Or ECM 5A
SH 9
CAN SHIELD 11
1.2RW MCU CONT. 20A
PROGRAM DUMP 12 10
TACHO SENSOR- 13 0.8Gr CLUSTER 10A
TACHO SENSOR+ 14
11
SWITCH PANEL 10A
PWM OUTPUT2 15 12
PWM OUTPUT1 16 CASSETTE 10A
MONITORING CIRCUIT

PARKING RY OUT
13
17 CONVERTER 20A
RAMLOCK LAMP 18 14
HOUR METER 19 WORK LAMP 30A
15
TRAVEL BUZZER 20 CABIN LAMP 30A
0.8LW

MCU
CAN1 Hi-ECM 21 16
0.8YW HEAD LAMP 20A
CAN2 Hi-APTC 22
0.8L 17

5
4
1

6
3
RS485+(TX)-CLUSTER 23 WIPER 20A
RS232C1 TX-HRDT 24 18
30A

CN-16B
RS232C2 TX-RCM
FUEL HEATER
25 19
REVERSE PWM IN01 26 START, STOP 20A

0.8B
0.8W
0.8Gr
20

0.8LW
REVERSE PWM IN02 27

0.8BW
HORN 10A
TILT SIG. 28 21
ROTATE SIG. 29 AC & HEATER 30A
22
REVERSE A IN 30 10A
0.8LW SAFETY SOL.
CAN1 Lo-ECM 31 23

SH
SH
0.8LW 20A

0.8G
0.8B
EPPR

0.8R
0.8W
CAN2 Lo-APTC 32

0.8LW
24

0.8L
0.8Y
0.8Y

0.8B

SH
SH
0.8W
0.8Gr
0.8B
RS485-(RX)-CLUSTER 33 20A

0.8W

0.8G
0.8Gr
0.8Or
TRAVEL SOL.

0.8RW
0.8LW
0.8BW

0.8LW
RS232C1 RX-HRDT 34 25
CIGAR, SEAT HEAT 20A
RS232C2 RX-RCM 35 26

9
8
7
5
9
8
7
5

2
2

4
1
4
1

6
6

3
3

8
7
6
15
14

5
4
1
12
11
10
13
12
11
10

60
59
58
22
21
20
19
18
HYD. TEMP SENDER 36 OPTION(BEACON) 20A

CN-2
CN-3

CN-5
WATER TEMP SENDOR 37 27
SOLENOIDE 20A
FUEL LEVEL SENSOR 38

4-22
SH
SH
28

SH
SH
0.8V
0.8R

0.8B
0.8G
0.8W

0.8L
0.8W
20A

0.8Gr
0.8Or

0.8B

0.8G
ALT. LEVEL

0.8Y
39 SOLENOIDE

0.8Gr
0.8W
0.8LW
0.8BW

0.8LW
0.8RW
GOV. POTENTIO SIG. 40
29
ILLUMINATION 10A
30
ILLUMINATION 10A
31
FUSE BOX

SH
0.8B

0.8R
0.8W

CN-244
0.8LW
1
0.8YW
1

2
4
3
2

CAN2
CN-249

CAMERA

0.8G
0.8LW

1
2
4
7

5
8
9

3
6
10
CN-126
0.8Or
0.8YB
0.8RY
0.8BW

SH
0.8BW

0.8V
1.2OrW

0.8G
0.8B

0.8V
0.8G
0.8W

0.8B

0.8V
0.8Or
0.8Gr

0.8G
Y
Y
B
0.8LW
0.8BW

Gr
0.8RW
8
7
6
5
4
3
2
1

A
3

B
C

8
7
6
5
4
3
2
1

F
32
34

A
C
E
39
42
46
00
26

B
D
H
00
28
21

00
40
37
47

G
CN-56
CN-93
CN-155

CN-173

0.8RW

RR
RR
RR
RR
RR
RR
RR
RR
00
NC

nc
nc
nc
-
S
RESISTOR

B+

GND
CAN Hi
CAN Lo
GND 1

CAN Hi
GND 2

CAN Lo
SPARE
SPARE
CAN_Hi

RETURN
CAN_Lo

RS232 TX
SLIP SPRING

CN-48

RS232 RX
POWER IG
CAN Shield
POWER 2
POWER 1

TX
h

RX
GND
SIG 3

RS232 P DUMP
SIG 2
IG 24V
BATT.24V
COOLANT LEVEL

CAMERA SIG

CLUSTER
HOSE METER
AIR-HEATER OUTPUT
AIR-HEATER RETURN
REMOTE ACCEL ON/OFF

SERVICE TOOL
REMOTE ACCEL RETURN

ACCEL POSITION SIGNAL

ACCEL POSITION SUPPLY

COOLANT LEVEL RETURN

20W94EL13
 B
B
max

1
decel
1

power
2

1
2

CS-5

A
A
CS-26

PWM
POR
PRO

cs-19
cs-29

C
C
TIONAL

CONVERT

L
B

Gr
R
HORN SW

L
B

Gr
R
BREAK SW
3

-
5V

S
+
Gr
SIG

L
B

Gr
CD-3

A
A

B
B

C
C
RETURN

ACCEL DIAL

2
2
1
1

CS-4

SAFETY SW
SAFETY SW
8
7
6
5
4
1
ROr

3
2

CS-20
B
A

C
1
2
A

8
7
6
5
4

2
2
1
SUPPLY

1
1
2

CN-247
Or

BREAKER SW
CN-246
CS-26A
CS-50

CN-142

L
L
Y

V
SIG B

G
L
L

Br
B
Y
B

Gr
Gr

B
L
L
B

Gr
B
B

G
Gr

L
L
B

Br
GrW
G

LOr
G

SENSOR
C

Gr

W
RETURN

GrW
Gr
BW

Gr
GrW
1

BW

BW

GrW
CD-5 2 12
ROr 2
SUPPLY A
LOr Or
SIG B 3
B

SENSOR
C VOr

PRESSURE PRESSURE
RETURN
4
CD-74
ROr
SUPPLY A 5
GOr
SIG B
B 6

SENSOR
RETURN C

BRAKE FAILTRANSMISSION REVERSE

3

PRESSURE
Br
CD-73 7 7
ROr 9
SUPPLY A V
BrW 8
SIG B
B 4

SENSOR
RETURN C 9 8

FORWARD
OVERLOAD SW

PRESSURE
CD-70 10
ROr 10
SUPPLY A Or
Y
SIG B 11
B

2
1
C B 11 12
RETURN

SENSOR
CN-68
12

SAFETY SOL
CD-71
ROr
SUPPLY A
ELECTRIC CIRCUIT FOR HYDRAULIC

G
SIG B CS-67

VW
B
RETURN C

SENSOR
CD-7 1

2
2

5
5

4
1
4
1

9
8
7
6
9
8
7
6

3
3

16
15
14
13
12
11
10
16
15
14
13
12
11
10
ROr 2 12

CN-7
SUPPLY A

CN-4
LW
2
SIG B
B 3

SENSOR
C

NEGATIVE 1 NEGATIVE 2 WORK(A)

RETURN

PRESSURE PRESSURE PRESSURE

Br
CD-35 4
ROr
SUPPLY A
YW 5
SIG B
B

ARM IN
SENSOR
RETURN C 6

PRESSURE
3
CD-31 7 7
ROr
SUPPLY A Or
9
V
0.8V 8
SIG B
B
0.8B 4

SENSOR
RETURN C 9 8

PRESSURE
OVERLOAD
10
QUICK CLAMP SW

CD-6
ROr 10
SUPPLY A
Gr Br
SIG B 11
B 11 12
B

SENSOR
RETURN C

TRAVEL(A)
PRESSURE
12
CD-24
ROr
SUPPLY A
BOr
SIG B
B

SWING
C

SENSOR
RETURN

PRESSURE
CD-32
ROr
SUPPLY A
WOr
2

4
1

10

14
13
12
11

60
59
34
33
32
31
30
29

SIG B
B
CN-5

SENSOR
RETURN C

BOOM UP
PRESSURE
CN-15
L
SENSOR 24V 1
BW
ATT.PS SIG 2
G
SENSOR GND 3
NC 4
LOr
ATT PRESS SOL 5
RW
SOL 24V 6
GW
ATT.CONFLUX SOL 7
GrW
ATT.SAFETY SOL 8
NC 9

TWO WAY SOLENOID

NC 10
BREAKER SOL(GND) 11
GrW CN-36
BREAKER SOL 12
ECM 30A
1
ROOM LAMP/CASSETTE 10A
CN-135 2
Gr MCU 20A
1 3
RW 30A

ARM
2 START KEY
4
AIR CON/HEATER 20A
CN-88 5
BrW WIPER 10A
1 6
RW CLUSTER 10A
2 7

POWER
TURN LAMP 10A
CN-69 8
V ECM 5A
1 9
RW MCU CONT. 20A
2 10
CLUSTER 10A
DO-6 11

REGEN BOOST RAM LOCK

V SWITCH PANEL 10A
1 12
RW CASSETTE 10A
2 13

DIODE
CONVERTER 20A
14
CN-51 WORK LAMP 30A
15
GND_MAIN 1 CABIN LAMP 30A
3

6
5
4
1
2

16
POWER BATT_24V 2 HEAD LAMP 20A
CN-16

17
POWER IG 3 WIPER 20A
FUSE BOX

ROr 18

4-23
POWER_24V OUT 4 FUEL HEATER 30A
B 19
GND_PRESSURE 5 START, STOP 20A
Gr 20
POWER OUTPUT_5V 6 HORN 10A
B 21
GND_5V 7 AC & HEATER 30A
22
ACCEL ACT(+) 8 VW SAFETY SOL. 10A
23
ACCEL ACT(-) 9 EPPR 20A
L 24
TILT SIG. 28 TRAVEL SOL. 20A
LOr 25
ROTATE SIG. 29 CIGAR, SEAT HEAT 20A
26
30 Br OPTION(BEACON) 20A
27
RS485-(RX)_CLUSTER 33 RW SOLENOIDE 20A
28
RS232C1_RX_HRDT 34 Or SOLENOIDE 20A
29
RS232C2_RX_RCM 35 ILLUMINATION 10A
LOr 30
HYD.TEMP SENDER 36 ILLUMINATION 10A
31
WATER TEMP SENDOR 37
YOr
FUEL LEVEL SENSOR 38
ALT. LEVEL 39
GOV. POTENTION SIG. 40

CN-52
Gr
ARM REGEN SOL 1
CRAB SOL 2
V
RAMLOCK SOL 3
GW
ATT_CONFLUX SOL. 4
LOr
ATT_PRESS SOL. 5
GrW
ATT SAFETY SOL 6
BrW
POWER MAX SOL 7
8
Br
SAFETY SOL RY 14
ANTI RESTART RY 15
16
W
ACCEL DIAL SIG 21
WORK BRAKE PRESS 22
WOr
BOOM UP PS SENSOR 23
BOr
SWING PRESS SENSOR 24
YW
ARM IN.OUT & BK IN PS 25
Gr
TRAVEL PS SENSOR(A) 26
L
N2 PRESS SENSOR 27
BrW
PEDAL FWD PS.(AD IN) 28
G
P1 PRESS SENSOR 29
VOr
OVERLOAD PRESS 30
BW
MCU

ATT. PRESS SENSOR 31

GOr
PEDAL REV PS(AD IN) 32
Or
BRAKE OIL PRESS 33
LOr
T/M OIL PRESS 34
LW
WORK PS SENSOR(A) 35
V
P3 PRESS SENSOR 36
Y
N1 PRESS SENSOR 37
L
P2 PRESS SENSOR 38
BLOWER SIG_IN 39
OPTION AUTO IDLE A_IN 40

CN-53
RW
ATT FLOW EPPR+ 1
2
GrW
TRAVEL EPPR+(w) 7
RW
PUMP SHIFT EPPR+ 8
W
BOOM PRIORITY EPPR+ 9
REVERVE EPPR+ 10
BW
ATT FLOW EPPR- 11
RIGHT TILT EPPR- 12
13
BW
TRAVEL EPPR-(w) 17
BW
PUMP SHIFT EPPR- 18
BW
BOOM PRIORITY EPPR- 19
REVERVE EPPR- 20
REVERSE FAN_MANUAL 21
REVERSE FAN_AUTO 22
YOr
AIR CLEANER SW 23
24
Y
POWER MAX SW 30
ENG OIL FILTER 31
ENG. OIL PRESS SW 32
Y

Br
Or
BOr

RAMLOCK_OFF
BW
ROr

33
GrW

V
B
G

W
B

B
Br

BW
B

BW
BW
BW

RW
RW

GrW

RAMLOCK_ON 34
ROr
LOr

YOr

YOr

CRUISE SW 35
2
1

3
4
2

5
1
87
85
86
30

TRAVEL LEVER NEUTRAL 36

2
1
2
87a

1
2

9
8
7
5
4
1

6
3

10
CN-1
CR-47

CN-140

1
2

1
2

MODE SW_TRAVEL
CR-62

CN-246

37
CN-133
CD-1

CD-2

TRAVEL Hi-Lo SW 38
C

Pa

NC

TRAVEL ALARM SW
CD-10

39
4 5 1

3 2
30 86
87a 87 85

GrW
HYD TEMP

P3 SIG
P1 SIG
P2 SIG
BREAKER RY

ONE TOUCH DECEL SW 40

FUEL LEVEL
QUICK COUPLER

AUTO
ATT FLOW-

BOOM
ATT FLOW+
SAFETY SOL RY

SENSOR 24V

PUMP HARNESS
PUMP SHIFT-

CRUISE
PUMP SHIFT+
SENSOR GND
AIR CLEANER SW

PRIORITY

20W94EL14
GROUP 3 ELECTRICAL COMPONENT SPECIFICATION

Part name Symbol Specifications Check

ö Check specific gravity

12V Ý 100Ah 1.280 over : Over charged
Battery
(2EA) 1.280 ~ 1.250 : Normal
1.250 below : Recharging

Rated load
 ö Check coil resistance(M4 to M4)

24V Normal : About 50̫

Battery relay
100A (continuity) ö Check contact
1000A (30seconds) Normal : â̫

CR-1

ö Check contact
Glow plug relay
24V 200A Normal : 0.942̫

(For terminal 1-GND)
CR-24
5
4

1
6

2
3