Bobcat 337 & 341 Long Arm Midi Excavator Electrical Repair & Troubleshooting Schematic 337 (S/N 233311425 AND ABOVE) 341 (S/N 233211380 AND ABOVE

A
D
C
B
F
E
H
G
J
K
H
E
F
K
B
C
J
G
D
A
4830
4380
4370
3900
3700
1730
2930
6300
1460
7110
3320
3300
3430
A
B
6220
2940
6230
A
B
2650
7130
TO OPTIONS
(MOTION ALARM)
B
A
C
7100
LEFT HAND CONSOLE HARNESS
-
6810006
3430
3300
3320
HYD FILTER
SWITCH
3430
3300
3320
B
A
C
A
B
A
B
337 and 341 EXCAVATOR
WIRING SCHEMATIC
337 (S/N 233311425 AND ABOVE)
341 (S/N 233211380 AND ABOVE
(PRINTED NOVEMBER 2001)
V-0115
C461 C460 C459
C458
C457
C466
C468
C467
F
6400 6400
6240
2790
A C B
C463
BCA
C464
ALL GROUNDS ARE
CONNECTED IN SERIES
A C B
BRN
DBL
A C B
YEL
RED/BLK
BRN
PAR
MOTOR WIPER
t
HYD TEMP
SENDER
538-1824 ±30
ohm
4
LOAD MOMENT
(OPTIONAL)
1
3
2
4
6
5
1720
3700
C
A
E
B
1720
4830
4400
4390
9200
CONSOLE
SENSOR
A
B
C
A
B
D
C
E
F
G
H
J
K
1730
4830
4370
4380
3900
3700
3910
3920
3900
A
C
B
J
D
G
H
E
K
2950
6300
1460
7110
2930
6230
A
B
6220
2940
9200
E
A
D
LEFT HANDLE
DGN
LGN/WHT
B
C
DETENT
1730
A
B
A
B
6220
2940
HORN
7120
1460
7110
WIPER SWITCH
(OPTIONAL)
1
3
2
4
6
5
2
BEACON
SWITCH
(OPTIONAL)
6300
2900
6310
6
5
3
1
2
9
6
0
6250
FRAME
LIGHT
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
WIRES CONNECT BY
LETTER ACROSS
CONNECTORS
A
B
B
A
SOME CONNECTOR
BODIES NOT SHOWN
FOR DRAWING CLARITY
BATTERY FEED 1000-1999 RED,
GROUND 2000-2999 BLK
MONITORING 3000-3999 LBL
HYDRAULIC 4000-4999 LGN
ATTACHMENT CONTROLS 5000
-
LIGHTS 6000-6999 PNK
ACCESSORIES 7000-7999 WHT
ENGINE 8000-8999 TAN
COMMUNICATION 9000-9999
PUR
D
BLK
BLK
BOOM LIGHT
BOOM LIGHT HARNESS - 6808415
HYDRAULIC HARNESS - 6808121
1 of 6
Dealer Copy -- Not for Resale
J4
LOAD MOMENT
(OPTIONAL)
WASHER
BOTTLE
3710
MOTION ALARM
)
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
SENSOR POWER (+8V)
SENSOR GROUND
J3
3200
3100
3300
3900
4310
4300
4830
SPARE ANG #1
A EG FDK BJ C H
BATTERY
GLOW PLUG
LIGHT
FUEL PULL
FUEL HOLD
SWITCHED POWER RELAY
STARTER
GROUND
GROUND
BATTERY
J1
8510
6210
8110
8150
8000
2110
2100
1120
1110
9370
TWO
(
BLADE LEVER
4960
B
F CG DEBAKHJ
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
9700
9600
9500
4960
4920
4320
DEF
UNUSED #2
UNUSED #3
J
U
N
U
S
E
D
#
1
G HCD A BF E
L POT SIGNAL
2120
2120
9330
C
+
-
C462
2820
-1999 RED, RED/WHT, RNG
BLK
-3999 LBL
LGN
5000-5999 YEL
PNK
-7999 WHT
TAN
9000-9999 PUR
2 of 6
Dealer Copy -- Not for Resale
I
WHT
A
B
C
D
E
4320
4920
1770
4350
4360
TWO-SPEED
(BLADE LEVER)
17804960
A
B
ABCDEF
SPARE DIG #2
SPARE DIG #1
UNUSED #2
UNUSED #3
SPARE ANG #2
J6
UNUSED #1
RIGHT HANDLE
BLK
DGN
WHT
PWM
E
A
D
BRN
RED
B
C
DETENT
2120
2120
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
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
3 of 6
Dealer Copy -- Not for Resale
25A
1190
7200
25
1480
20
1740
2740
1190
1030
1040
B AC
+
-
1740
SWITCH POWER
BATTERY
5
WIPER POWER
1310
1090
14801080
S
L2
BAT
G
1080
9390
9360
STARTER
S
M
ALTERNATOR
1
0
9
0
1040
1030
B
1460
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
7200
2830
FUEL SENDER 20-270 ohm
3100
B
A
B
A
3310
POWER LEADS
1040 1070
1150
1330
1
0
3
0
1060
1310
1360
25
ACD POWER
1320
6400
2840
AUX
SOCKET
7210
1
2
ALT HEATER
FUSE
FUSE
FUSE
FUSE
FUSE 6
2300
2800
2000
2230
2310
2210
2710
2220
2830
2740
GROUNDS
2060
TO OPTIONS
(HVAC)
A
B
A
B
3100
3310
FUEL SENSOR
HARNESS - 6807174
1470
RELAY GROUNDS
2000
ARE CONNECTED IN SERIES
C157
C158
C159 C160
C161
C465
PRINTED IN U.S.A.
BRN
DBL
YEL
RED/BLK
BRN
BEACON
BLK
M
V
HIGH
PAR
K
GROUND
MOTOR WIPER
BLK
BRNBLK
DOME
LIGHT
BLK
BLK
LEFT WORK
LIGHT (OPT)
RIGHT WORK
LIGHT (OPT)
DBL
C208
C209
BLK
WIPER HARNESS (IF EQUIPPED)
6802665
CAB HARNESS (IF EQUIPPED)
6802664
4 of 6
Dealer Copy -- Not for Resale
SWITCHED
POWER
8000
86
30
85
87
87A
7200
25A
1480
20A
D
1330
1050
2000
2010
STARTER
9380
9390
86
30
85
8787A
1070
1740
SWITCH POWER
FUEL
SHUTOFF
8110
8120
86
30
85 87
87A
1350
2010
2030
25A
8510
8500
85501060
2040
2050
GLOW
PLUG
86
30
8587
87A
PULL HOLD
FUEL SHUT OFF
8100 8150
2800
WHT TO BLK = 0.26 ohm
RED TO BLK = 10.9 ohm
5A
WIPER POWER
1460
9700
9600
9500
BA
HR
HR
HR
HR
GLOW PLUGS
0.4 ohm
7200
2830
RADIO
CONN
2090
2090
D
C
A B
120 ohm
ACD
&
CONNECTOR
25A
ACD POWER
1320
3100
3200
3620
3500
7210
9400
1110
1120
1470
1460
8000
6210
6200
8110
8120
8150
8510
8550
9380
9360
9700
9600
9500
3600
6300
H G EF D C B AF DH JA K GE B CD EG FA H K BCJ
LIGHT
RELAY
6210
6200
20A
86 30
85 87
87A
1370
2030
2040
1310
2050
1360
6300
25A
1150
1110
1120
9400
5A
1310
7220
7220
RADIO
MEMORY
15A
1360
3620
3200
1470
8120
3600
3500
8550
9360
9380
9400
8150
8000
1120
1110
8510
6210
8110
9500
9600
9700
6300
1460
6200
7
2
1
0
3
1
0
0
H G EF D C B AK GBH A CF D JEH KGD BJ CA E F
9340
9330
9400
C
A
D
B
ALT HEATER
FUSE 8
FUSE 7
FUSE 4
FUSE 1
FUSE 3
FUSE 2
FUSE 11
FUSE 9 FUSE 12
ENGINE HARNESS -
6810449
1470
+
-
RELAY GROUNDS
2000-2050
ARE CONNECTED IN SERIES
7
2
1
0
1
C
C
453
C452C451C450
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
5
0
1
0
6
0
2
0
4
0
2
0
5
0
86
8587
9
7
0
0
9
6
0
0
9
5
0
0
B
A
2
0
9
0
2
0
9
0
D
C
A
B E FG
120
ohm
ACD & REMOTE START
CONNECTOR
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
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
C454C453
C455
V-0115 (10-23-01)
6 of 6
Dealer Copy -- Not for Resale
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