Lull 944E-42 Service Manual User Manual
Page 571
9.61
Model 644E-42/944E-42
Rev. 6/04
Electrical System
9.8.18
Optional Single Joystick (Late Production) Electrical Schematic
Schematic is drawn with the ignition switch in the OFF position.
12V BUSS BAR
ENGINE
BLOCK
+
-
BATTERY
1
PWM DRIVER
BOARD
C
B
A
SJG1
AH1A
SINGLE
JOYSTICK
RELAY
86
85
87A 87
30
SCO
LE
AH1C
SJG3
TA
JOYSTICK
FEMALE
CONNECTOR
RTA
FTA
SCO
3
4
5
6
1
2
SJG2
AH1B
SJG2
SJG3
305
AH1A
AH1C
JOYSTICK
MALE
CONNECTOR
3
4
5
6
1
2
RED
-
+12V DC / B+
EC2
BLACK
-
GROUND / B-
GREY
-
PWM RETURN
PURPLE
-PWM F
TIL
T
EC3
YELLOW
-
SWITCH CONTROL
OUTPUT
(NO)
EC1
(+5V)
ORANGE
-
PWM R
TIL
T
PROPORTIONAL
ROLLER
TRIGGER
SWITCH
SINGLE
JOYSTICK
CONTROL
SINGLE
JOYSTICK
CONNECTOR
12V BUSS BAR
STARTER
GND (-)
+
HYD
JOYSTICK
CONNECTOR
F1
40
OPEN CAB
VEHICLE MAIN
F2
15
IGNITION
CONTROL
BA1A
BA3
B
BA4
D
F4
20
FUEL
SOLENOID
TRANSMISSION
F3
15
C
4
3
2
1
A
FJ1
PB1
FJ3
5
FJ4
6
FJ5
7
FJ6
8
FJ7
9
10
F8
10
DASH PANEL
H
F7
10
STABILITY
CIRCUIT
G
F
F6
10
BACK-UP
ALARM/HORN
F5
20
IGNITION
POWER
E
I
F10
5
AUXILIARY
HYDRAULICS
J
AH1
FJ2
F9
OPEN
A
B
A
B
AHG2
AHG1
105
AH2A
20
AUXILIARY
HYDRAULIC
SOLENOIDS
AH2B
AH2
IG1
BA4
BA3
10
PB2A
PB2
IG1
PB1
To
Park Brake
Switch
A
B
AH A
A
B
AH B
295
AHG5
CAB GRND
STUD
AH1
AH2
AHG6
AHG6
C
B
A
C
A
B
BA1A
POWER
MALE
CONNECTOR
A
B
C
BA1
POWER
FEMALE
CONNECTOR
IGNITION
RELAY
87A 87
30
86
85
ACC
IGN
B+
OFF
ACC
IGN
ST
IGNITION
SWITCH
AH2B
SINGLE
JOYSTICK
PILOT SELECT
VALVE
A
B
CTA
A
B
CTB
A
B
HO
A
B
EXT
A
B
AX
A
B
TR
SOLENOIDS
PROPORTIONAL
SOLENOIDS
A
B
A
B
A
B
A
B
A
B
A
B
FTB
FTB
RTB
RTB
FTA
RTA
SJG4
SJG4
290
SJG7
SJG7
LEA
LEB
295
TAA
SJG6
SJG6
SJG5
TAB
300
PWMG
PWMG
310
SJG5
SJG1
MU5521
Refer to
pages 9.52,
Refer to pages 9.48,