Bobcat 331 Mini Excavator Electrical Repair & Troubleshooting Schematic (S/N 232511001 AND ABOVE) (S/N 232711001 AND ABOVE) 334 (S/N 232611001 AND ABOVE)

BATTERY FEED 1000-1999 RED, RED/WHT, RNG
GROUND 2000-2999 BLK
MONITORING 3000-3999 LBL
HYDRAULIC 4000-4999 LGN
ATTACHMENT CONTROLS 5000-5999 YEL
LIGHTS 6000-6999 PNK
ACCESSORIES 7000-7999 WHT
ENGINE 8000-8999 TAN
COMMUNICATION 9000-9999 PUR
WIRES CONNECT BY
LETTER ACROSS
CONNECTORS
A
B
B
A
WIRING SCHEMATIC
331 (S/N 232511001 AND ABOVE)
(S/N 232711001 AND ABOVE)
334 (S/N 232611001 AND ABOVE)
(PRINTED FEBRUARY 2001)
V-0062
SOME CONNECTOR
BODIES NOT SHOWN
FOR DRAWING CLARITY
RED = RED
RNG = ORANGE
BLK = BLACK
LBL = LIGHT BLUE
DBL = DARK BLUE
LGN = LIGHT GREEN
DGN = DARK GREEN
YEL = YELLOW
PNK = PINK
WHT = WHITE
BRN = BROWN
TAN = TAN
PUR = PURPLE
GRY = GRAY
WASHER BOTTLE
A C B
YEL
RED/BLK
BRN
BEACON
CAB AND WIPER WIRING
(IF SO EQUIPPED)
HARNESS 6802664
AND 6802665
B A C
BRN
DBL
BLK
BLK
DBL
C467
LOAD MOMENT
(OPTIONAL)
7100
7120
1460
7110
WIPER SWITCH
(OPTIONAL)
1720
3700
6300
C
A
D
E
B
1720
4830
4400
4390
9200
A
B
C A
B
C
D
E
F
G
H
J
1730
3310
4370
4380
3900
3700
3910
3920
3900
H
F
J
D
C
G
B
A
E
K
2900
6300
1460
7110
2930
62302950
FRAME
LIGHT
RED
E
A
D
LEFT HANDLE
BRN
B
C
DETENT
1730
6
3
1
3100
4830
9200
6230
6240
2790
6400
B A C
A C B
6310
7120
6240
2790
7100
6400
FUEL
SENDER
20-270 ohm
B
A A
B
C158
LH
CONSOLE
HARNESS
6809045
CONSOLE
SENSOR
BEACON
SWITCH
(OPTIONAL)
5
1 2
3
4 5
6
1
2
3
5
4
6
4
2
1
2
C462
C461
C
460
C458
C457
C465
A
C
D
B
F
E
H
G
J
K
A
E
F
K
D
C
J
B
G
H
LOAD MOMENT
(
OPTIONAL
4830
4380
4370
3900
1730
2930
6300
6230
1460
6240
7110
2790
+
-
7110
2
8
2
0
6
4
0
0
284
0
AUXILIARY
SOCKET
A
B
6220
2940
A
B
2650
7130
TRAVEL ALARM
(OPTIONAL)
7
2
1
0
3100
3310
9200
3700
6400
HORN
HYD TEMP
SENDER
538-1824 ±30
ohm
C464C463
C
468
A
B
A
B
2940
6220
A
B
6
2
2
0
2
9
4
0
BOOM
LIGHT
K
1 of 6
Dealer Copy -- Not for Resale
ORANGE
LIGHT BLUE
DARK BLUE
LIGHT GREEN
DARK GREEN
YELLOW
WHITE
BROWN
PURPLE
HYD FILTER
SWITCH
J4
LOAD MOMENT
(OPTIONAL)
3
7
1
0
D HCF K G EA JB
9330
9350
9360
8550
3500
3600
8120
3430
KEY
CRANK
FUEL PULL STATUS
ENGINE SPEED VR
ENG OIL PRESS
GLOW PLUG STATUS
STARTER STATUS
HYD OIL FILTER
ENGINE SPEED HALL
TRAVEL PEDAL SWITCH
CONSOLE
FUEL SENDER
ENGINE TEMP
HYD TEMP
SENSOR POWER (+8V)
SENSOR GROUND
J3
3200
3100
3300
3900
4310
4300
4830
SPARE ANG #1
A EG FDKB J C H
BATTERY
GLOW PLUG
LIGHT
FUEL PULL
FUEL HOLD
SWITCHED POWER RELAY
STARTER
GROUND
GROUND
BATTERY
J1
8510
6210
8110
8150
8000
2
1
1
0
2100
1120
1110
9370
1780
4960
FC GD EBAKHJ
CAN HIGH
CAN LOW
CAN SHIELD
R POT SIGNAL
R SKI UP
R SKI DOWN
DETENT
2 SPEED
L SKI UP
L SKI DOWN
J5
4960
4920
4320
ABCDEF
SPARE DIG #2
SPARE DIG #1
UNUSED #2
UNUSED #3
A
R
A
N
G
#
2
J6
UNUSED #1
G HCDA BF E
L POT SIGNAL
2120
2120
9330
C
C
t
3300
3320
9500
9600
9700
14903720
3720
HORN
HYD TEMP
SENDER
1824
±30
ohm
TWO SPEED (
BLADE LEVER
A
B
3720
C
415
A
B
A
B
1
4
9
0
3720
B
3
3
1
S
/
N
2
3
2
5
1
1
8
1
2
3
3
1
E
S
/
N
2
3
2
7
1
1
1
3
7
3
3
4
S
/
N
2
3
2
6
1
1
4
5
3
3730
3740
B
R
I
G
H
T
T
R
A
V
L
E
F
T
T
R
A
V
E
2 of 6
Dealer Copy -- Not for Resale
2330
4340
2340
4450
2450
DIVERTER FOR 2ND AUX
(OPTIONAL)
4970
2480
TWO-SPEED
A
B
A
B
4340
F
K
J
G E
C
H
D
A
B
4330
4500
4970
4450
9320
3710
4330
9320
2610
-
+
BUZZER
C
4
1
4
C419C420
YELLOW TIE STRAP
BLUE TIE STRAP
6 ohm nominal
at 12 VDC
6 ohm nominal
at 12 VDC
8 ohm nominal
at 12 VDC
RED TIE STRAP
J2
P
I
E
Z
O
O
U
T
L
O
A
D
M
O
M
E
N
T
S
P
A
R
E
R
E
L
A
Y
O
U
T
W
O
R
K
G
R
O
U
P
D
2
5
A
N
D
D
3
1
P
W
M
W
O
R
K
G
R
O
U
P
D
3
7
2
S
P
E
E
D
P
W
M
D
I
V
E
R
T
E
R
O
U
T
F
R
O
N
T
B
A
S
E
F
R
O
N
T
R
O
D
S
P
A
R
E
K
E
Y
L
E
S
S
S
O
L
RIGHT HAND CONSOLE
HARNESS 6809046
C456
CONTROL MODULE
CONNECTORS J1-J6
I
WHT
A
B
C
D
E
4320
4920
1770
4350
4360
1780
ABCD
S
P
A
R
E
D
I
G
#
2
S
P
A
R
E
D
I
G
#
1
S
P
A
R
E
A
N
G
#
2
J6
U
N
U
S
E
D
#
1
RIGHT HANDLE
BLK
GRN
WHT
PWM
E
A
D
BRN
RED
B
C
DETENT
C
C
2310
2000, 2330, 2340, 2450, 2480, 2510,
2520,2650, 2710, 2820, 2830, 2940
4520
2520
WORK GROUP
LOCKOUT
GREEN TIE STRAP
8 ohm nominal
at 12 VDC
4510
2510
WORK GROUP
LOCKOUT
ORANGE TIE STRAP
8 ohm nominal
at 12 VDC
1490
TWO SPEED
(BLADE LEVER)
A
A
B
A
B
C415
A
B
A
B
C416
A
B
A
B
A
B
A
B
A
B
A
B
C
4
1
3
C413
6 ohm nominal
at 12 VDC
AUXILIARY MALE
COUPLER
AUXILIARY FEMALE COUPLER
14903720
TRAVEL PEDAL
SWITCH
A
B
3
3
1
S
/
N
2
3
2
5
1
1
0
0
1
-
2
3
2
5
1
1
6
3
5
3
3
1
E
S
/
N
2
3
2
7
1
1
0
0
1
-
2
3
2
7
1
1
1
0
2
3
3
4
S
/
N
2
3
2
6
1
1
0
0
1
-
2
3
2
6
1
1
3
6
3
3720
1490
C415
A B
A B
1490
3720
TRAVEL PEDAL
SWITCH
A
B
3
3
1
S
/
N
2
3
2
5
1
1
6
3
6
-
2
3
2
5
1
1
8
1
1
3
3
1
E
S
/
N
2
3
2
7
1
1
1
0
3
-
2
3
2
7
1
1
1
3
6
3
3
4
S
/
N
2
3
2
6
1
1
3
6
4
-
2
3
2
6
1
1
4
5
2
3720
1490
C415
A B
A B
1490
3720
A
B
S
/
N
2
3
2
5
1
1
8
1
2
A
N
D
A
B
O
V
E
S
/
N
2
3
2
7
1
1
1
3
7
A
N
D
A
B
O
V
E
S
/
N
2
3
2
6
1
1
4
5
3
A
N
D
A
B
O
V
E
3730
1500
3740
1510
A
B
R
I
G
H
T
T
R
A
V
E
L
S
W
I
T
C
H
L
E
F
T
T
R
A
V
E
L
S
W
I
T
C
H
3 of 6
Dealer Copy -- Not for Resale
ALL GROUNDS
ARE
CONNECTED IN
SERIES
1080
S
G
STARTER
S
ALTERNATOR
B
3600
3630
A
B
A
B
3200
3210
t
A
B
A
B
HR
GLOW PLUGS
0.4 ohm
K
C
H
G
D
E
F
J
A
B
9390
9360
1480
3210
3200
3500
3630
3600
8550
A
B
C
8500
8100
8150
GROUNDS
2060
2800
2800
HOLD
PULL
1090
FUEL SHUT OFF
WHT TO BLK = 0.26 ohm
RED TO BLK = 10.9 ohm
S
P
E
E
D
S
E
N
S
O
R
(
V
R
)
ENGINE OIL
PRESSURE
SWITCH
E
N
G
I
N
E
C
O
O
L
A
N
T
S
E
N
D
E
R
5
0
0
-
3
0
0
0
±
3
0
o
h
m
BAT
L2
R
E
DOME LIGHT
M
V
HIGH
PAR
K
GROUND
MOTOR WIPER
BLK
BLK BRN
BEACON
BLK
LEFT
WORK
LIGHT
(OPT)
RIGHT
WORK
LIGHT
(OPT)
BLK
BLK
DBL
2740
1190
1030
1040
B AC
+
-
SWITCH POWER
BATTERY
WIPER POWER
RADIO
CONNECTOR
ACD POWER
ALT HEATER
HEATER
C161
C460
A
B
6220
2940
K
C
H
G
D
E
F
J
A
B
9390
9360
1480
3210
3200
3500
3630
3600
8550
A
B
C
8500
8100
8150
25A
FUSE 6
1310
7200
2830
1470
+
-
2300
2310
C468
C160
C159
A
B
A
B
2940
6220
BOOM LIGHT
HARNESS
6808415
A
B
6
2
2
0
2
9
4
0
LIGHT
C162 C101
A
B
C
Printed in U.S.A.
4 of 6
Dealer Copy -- Not for Resale
1140
SWITCHED
POWER
8000
8530
8687A 87
25A
1480
20A
1320
2710
1140
D
E
FG
1330
1050
2000
2010
STARTER
9380
9390
30
85
868787A
1070
1740
SWITCH POWER
FUEL
SHUTOFF
8110
8120
30
85
86
87A 87
1350
2010
2030
25A
8510
8500
1060
2040
2050
GLOW
PLUG
30
8
7
8
6
85
87
A
8100
5A
WIPER POWER
1460
9700
9600
9500
BA
2090
2090
D
CA B
E
FG
120 ohm
ACD AND REMOTE
START CONNECTOR
25A
ACD POWER
1320
LIGHT
RELAY
6210
6200
20A
30
85
86
87
A
87
1370
2030
2040
1310
2050
1360
6300
25A
1150
1110
1120
9400
5A
1310
7220
RADIO
MEMORY
15A
1360
ALT HEATER
FUSE 8
FUSE 7
FUSE 4
FUSE 1
FUSE 3
FUSE 2
FUSE 11
FUSE 9
FUSE 12
FUSE
RELAY GROUNDS 2000-2050
ARE CONNECTED IN SERIES
7210
1
C
C453
C455
9340
9330
9400
C
A
D
B
C
A
D
B
1150
5 of 6
Dealer Copy -- Not for Resale
25A
1140
1320
2710
1140
D
E FG
85
D
E FG
ACD AND REMOTE
START CONNECTOR
ALT HEATER
25A
HEATER
SW POWER
ACD
CONTROLLER
ACD
AUX
LIGHTS
LIGHTS
SWITCH
POWER
GLOW
PLUGS
STARTER
20A
25A
25A
25A
15A
20A
25A
WIPER
5A
FUSE 7
FUSE 8
FUSE 9
FUSE 10
FUSE 11
FUSE 12
FUSE 1
FUSE 2
FUSE 3
FUSE 4
FUSE 5
FUSE 6
FUEL
PULL
IGN
5A
25A
FUEL
FUSE 10
453
C455
IGNITION
SWITCH
B
ST
I
RUN
START
OFF
RED
WHT
DGN
C
A
D
B
C
A
D
B
2300
2100, 2110, 2610, 2740,
2790, 2840, 2930
2310
2000, 2330, 2340, 2450, 2480, 2510,
2520,2650, 2710, 2820, 2830, 2940
GROUNDS
POWER LEADS
1040 1070
1150
1330
1
0
3
0
1060
1310
1360
1150
V-0062 (2-13-01)
6 of 6
Dealer Copy -- Not for Resale
Categories: Schematics | Tags: | 1 comment

One Comment

  1. Trying to get copy of Electrical Wiring of Bobcat 331
    1999 build date.

    Thank You

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