Bobcat 337 & 341 Long Arm Midi Excavator Electrical Repair & Troubleshooting Schematic 337 (S/N AAC811001 And Above) 337 (S/N A9W711001 And Above) 341 (S/N A9W911001 And Above)

BATTERY FEED
GROUND 2000-
2999
MONITORING
3000
HYDRAULIC
4000
ATTACHMENT CONTROLS
LIGHTS 6000-
6999
ACCESSORIES
ENGINE 8000-
8999
COMMUNICATION
WIRES CONNECT BY LETTER
ACROSS CONNECTORS
A
B
B
A
A
C
B
F
E
G
J
K
B
D
E
4380
4370
3700
1730
2930
6300
7110
6230
A
B
2650
7130
TRAVEL
ALARM
(OPTIONAL)
LOAD MOMENT
(OPTIONAL)
BEACON
SWITCH
(OPTIONAL)
1
3
2
4
6 5
1720
3700
1
3
2
4
6 5
6
3
0
0
6
3
1
0
CONSOLE
SENSOR
A
B
C
A
B
C
E
F
G
J
K
1730
4370
4380
3700
3910
3920
3900
A
B
D
C
E
2900
2950
6300
1460
7110
2930
2
9
3
0
2
9
0
0
6230
2950
FRAME
LIGHT
LEFT HANDLE
DETENT
1730
HORN
LEFT HAND CONSOLE HARNESS
7102875
SOME CONNECTOR
BODIES NOT SHOWN
FOR DRAWING CLARITY
C461
C458 C457
C467
6250
6240
6400
+
-
WASHER
BOTTLE
C462
7120
1460
7110
WIPER SWITCH
(OPTIONAL)
1
3
2
4
6
5
7100
C
A
B
7120
7100
2960
6310
A
6400
C
1460
2970
9
2
0
0
B
9200
BRN
B
E
4390
E
D
4400
D
C
1720
RED
C
A
4830
A D
4830
D
4830
H
3900
H
3900
CAB AND WIPER WIRING
HARNESS
7102834
B
A
6400
2950
GRN
BRN
YEL
7100772
B
C
6310
C
A
B
C
A
B
C
A
B
B
A
6400
2790
B
C
WIRING SCHEMATIC
337 (S/N AAC811001 And Above)
337 (S/N A9W711001 And Above)
341 (S/N A9W911001 And Above)
(PRINTED DECEMBER 2007)
V-0969
1750
A
1750
6
2
4
0
A
2860
6240
1750
C469 C464
C463
1 of 6
Dealer Copy -- Not for Resale
C625
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
A
C
B
F
E
G
J
K
J4
LOAD MOMENT
(OPTIONAL)
4380
4370
3700
1730
6230
A
B
2650
7130
TRAVEL
ALARM
OPTIONAL
)
AH CF K G BD JE
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
J3
3200
3100
3300
3900
4830
SPARE ANG #1
BATTERY
GLOW PLUG
LIGHT
FUEL PULL
FUEL HOLD
SWITCHED POWER RELAY
STARTER
GROUND
GROUND
BATTERY
J1
F GEBAKHJ
CAN HIGH
CAN LOW
CAN SHIELD
R POT SIGNAL
DETENT
2 SPEED
L SKI UP
L SKI DOWN
J5
9700
9600
9500
4960
4920
4320
CD A BF E
L POT SIGNAL
+
-
7110
2820
WASHER
BOTTLE
B
8150
J
8110
K
8000
C
6210
A
9370
E
1110
F
1120
H
8510
G
2100
D
2110
SENSOR POWER (+8V)4300
G
SENSOR GROUND4310
H
D
4830
37103700
H
3900
DOME
LIGHT
2880
6400
BEACON
CAB AND WIPER WIRING
(IF EQUIPPED)
HARNESS
7102834
WIPER
MOTOR
C
A
B
C
A
B
B
A
2870
B
A
2860
B A
PARK
GRD
M
HIGH
1000
8
7
9
2
6
5
4
1
3
RADIO CONNECTOR
LEFT
SPEAKER
RIGHT
SPEAKER
OPEN
OPEN
7990
2990
7980
2980
1750
2975
+
_
+
_
2 of 6
Dealer Copy -- Not for Resale
B
I
WHT
A
B
C
D
E
4320
4920
1770
4350
4360
F CG DEB
C
A
N
H
I
G
H
R POT SIGNAL
R SKI UP
R SKI DOWN
DETENT
2 SPEED
J5
9
5
0
0
4960
4920
4320
ABCDEF
SPARE DIG #2
SPARE DIG #1
UNUSED #2
UNUSED #3
SPARE ANG #2
J6
UNUSED #1
RIGHT HANDLE
BLK
GRN
WHT
PWM
E
A
D
BRN
RED
B
C
DETENT
2120
2120
9330
C
C
2330
4340
2340
4450
2450
4410
2410
DIVERTER FOR 2ND AUX
(OPTIONAL)
FRONT ROD
FRONT BASE
4970
2480
TWO-SPEED
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
4340
F
K
J
G E
C
H
D
A
B
4330
4410
4970
4450
9320
3710
4330
9320
2610
-
+
BUZZER
C413
C414
C415
C419
C420
YELLOW TIE STRAP
BLUE TIE STRAP
GREEN TIE STRAP
6 ohm nominal
at 12 VDC
6 ohm nominal
at 12 VDC
8 ohm nominal
at 12 VDC
8 ohm nominal
at 12 VDC
6 ohm nominal
at 12 VDC
RED TIE STRAP
WORK GROUP
LOCKOUT PWM D37
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
2940
2930
2840
2790
2610
2
2
3
0
2820
2650
2480
2450
2110
2
2
2
0
2410
2340
2330
2100
2210
RIGHT HAND CONSOLE
HARNESS 6810007
C456
CONTROL MODULE
CONNECTORS J1-J6
TWO-SPEED
(BLADE LEVER)
17804960
A
B
3 of 6
Dealer Copy -- Not for Resale
25A
1
1
9
0
1
7
4
0
2
7
4
0
1
1
9
0
1030
1040
B AC
+
-
BATTERY
1
3
1
0
1090
14801080
S
EXC
BAT
G
1080
9390
9360
STARTER
S
M
ALTERNATOR
1
0
9
0
1040
1030
B
SPEED SENSOR (VR)
3600
3630
A
B
A
B
ENGINE COOLANT
SENDER
500-3000 ± 30 ohm
3200
3210
t
ENGINE OIL
PRESSURE
SWITCH
3500
3600
3630
A
B
A
B
3210
3200
FUEL SENDER 20-270 ohm
3100
B
A
B
A
3310
POWER LEADS
1
0
4
0
1070
1150
1330
1
0
3
0
1060
1310
1360
FUSE 6
2300
2800
2000
2230
2310
2210
2710
2220
2830
2740
GROUNDS
2060
HEATER
A
B
A
B
3100
3310
FUEL SENSOR HARNESS
6807174
C157
C158
C159 C160
C161
A
B
A
B
6220
2940
BOOM LIGHT HARNESS 6808415
A
B
6
2
2
0
2
9
4
0
BOOM
LIGHT
C468
C460
6400
2840
AUX
SOCKET
7210
1
2
C465C459
3320
3300
3430
B
A
C
A
B
6220
2940
HYDRAULIC HARNESS
6808121
HYD TEMP
SENDER
538-1824 ±30
ohm
HYD FILTER
SWITCH
3430
t
3300
3320
3430
3300
3320
B
A
C
A
B
A
B
C466
A
6
2
4
0
A
2860
6240
LEFT WORK
LIGHT (OPT)
WORK LIGHT
HARNESS
A
B
C626
A
B
PNK
BLK
4 of 6
Dealer Copy -- Not for Resale
C625
SWITCHED
POWER
8
0
0
0
8630
858787A
7200
25A
1480
20A
1
3
3
0
1050
2
0
0
0
2
0
1
0
STARTER
9
3
8
0
9
3
9
0
8630
858787A
1
0
7
0
1740
SWITCH POWER
FUEL
SHUTOFF
8
1
1
0
8
1
2
0
86 30
85 87 87A
1
3
5
0
2
0
1
0
2
0
3
0
25A
8
1
0
0
5AWIPER POWER
1460
GLOW PLUGS
0.4 ohm
7200
2830
RADIO
CONN
25A
ACD POWER
1320
3
1
0
0
3
2
0
0
3
6
2
0
3
5
0
0
7
2
1
0
1
4
7
0
1
4
6
0
8
1
2
0
8
5
5
0
9
3
8
0
9
3
6
0
9
7
0
0
9
6
0
0
9
5
0
0
3
6
0
0
H G EF D C B AD EG FA H K BCJ
6
2
1
0
6
2
0
0
1
3
1
0
2
0
5
0
RADIO
MEMORY
15A
1
3
6
0
3
6
2
0
3
2
0
0
1
4
7
0
8
1
2
0
3
6
0
0
3
5
0
0
8
5
5
0
9
3
6
0
9
3
8
0
9
5
0
0
9
6
0
0
9
7
0
0
1
4
6
0
7
2
1
0
3
1
0
0
H G EF D C B AH KGD BJ CA E F
ALT HEATER
FUSE 8
FUSE 4
FUSE 1
FUSE 3
FUSE 2
FUSE 12
ENGINE HARNESS
6818010
1470
+
-
RELAY GROUNDS 2000-2050
ARE CONNECTED IN SERIES
6400
2840
7210
1
2
3320
3300
3430
B
A
C
A
B
6220
2940
LIGHT
RELAY
20A
8630
858787A
1
3
7
0
2
0
3
0
2
0
4
0
1
3
6
0
6
3
0
0
FUSE 11
6
2
0
0
K
6
3
0
0
G
6
2
1
0
A
8
5
1
0
C
1
1
2
0
J
1
1
1
0
D
8
1
5
0
B
8
1
1
0
E
9
4
0
0
F
8
0
0
0
H
FUSE 9
9
4
0
0
5A
1
3
1
0
FUSE 7
7
2
2
0
7
2
1
0
1
HR
HR
HR
HR
7
2
2
0
9
4
0
0
F
8
0
0
0
H
8
1
1
0
E
8
1
5
0
B
6
2
1
0
A
6
2
0
0
K
6
3
0
0
G
1
1
1
0
D
1
1
2
0
J
8
5
1
0
C
25A
1
1
5
0
1
1
1
0
1
1
2
0
BEACON
B
2870
B
C452
C451C450
2860
B A
B
A
2
8
6
0
6
2
4
0
WORK LIGHT
HARNESS
A
B
PNK
BLK
PNK
BLK
A
B
C627
RIGHT WORK
LIGHT (OPT)
A
B
5 of 6
Dealer Copy -- Not for Resale
25A
1
1
4
0
1
1
5
0
1
3
2
0
2
7
1
0
1
1
4
0
D E FG
8
5
1
0
8
5
0
0
8
5
5
0
1
0
6
0
2
0
4
0
2
0
5
0
GLOW
PLUG
8630
858787A
9
7
0
0
9
6
0
0
9
5
0
0
BA
GLOW PLUGS
0.4 ohm
2
0
9
0
2
0
9
0
D
C
A B E FG
120 ohm
ACD & REMOTE START
CONNECTOR
9
5
0
0
A
RADIO
MEMORY
9
5
0
0
A
IGNITION
SWITCH
B
ST
I
RUN
START
OFF
RED
WHT
DGN
2
2
1
0
2
2
2
0
2
2
3
0
C B A
9340
9330
9400
C
A
D
B
C
A
D
B
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
2
2
1
0
2
2
2
0
2
2
3
0
C B AC
C455
HR
HR
HR
HR
A
B
C
V
-
0
9
6
9
(
1
2
-
5
-
0
7
)
2800
8100
8150
A
B
C
HOLD
PULL
FUEL SHUT OFF
HOLD = 0.33 OHM
PULL = 24.5 OHM
FUEL SHUTOFF SOLENOID
C454C453
C101
6 of 6
Dealer Copy -- Not for Resale
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