CLICK THE VOLVO-LOGO IN
CLICK THE VOLVO-LOGO IN
THE LOWER RIGHT CORNER
THE LOWER RIGHT CORNER
MAIN
MAIN
Engine
Engine Start
Start and
and Stop
Stop Circuit
Circuit
EC140B-05-01
EC140B-05-01
Master Switch
Master Switch
EC140B-05-02
EC140B-05-02
Key
Key Switch
Switch
EC140B-05-03
EC140B-05-03
Battery Relay
Battery Relay
EC140B-05-04
EC140B-05-04
Safety
Safety Start
Start Relay
Relay
EC140B-05-05
EC140B-05-05
Safety
Safety Start
Start Relay
Relay Operation
Operation
EC140B-05-06
EC140B-05-06
Safety
Safety Limit
Limit Switch
Switch
EC140B-05-07
EC140B-05-07
Alternator
EC140B-05-08
Alternator
EC140B-05-08
Slow
Slow Blow
Blow Fuse
Fuse
EC140B-05-09
EC140B-05-09
Fuse
Fuse Box
Box
EC140B-05-10
EC140B-05-10
Instrument
Instrument Panel
Panel
EC140B-05-11
EC140B-05-11
Instrument Panel Operation
Instrument Panel Operation
EC140B-05-12
EC140B-05-12
Instrument
Instrument Panel
Panel Circuit
Circuit
EC140B-05-13
EC140B-05-13
Engine
Engine Oil
Oil Pressure
Pressure Switch
Switch
EC140B-05-14
EC140B-05-14
Air
Air Cleaner
Cleaner Clogging
Clogging Switch
Switch
EC140B-05-15
EC140B-05-15
Coolant
Coolant Temperature
Temperature Sensor
Sensor
EC140B-05-16
EC140B-05-16
Fuel
Fuel Level
Level Sender
Sender
EC140B-05-17
EC140B-05-17
05
Engine Start and Stop Circuit
From VECU
(Safety Stop)
To Auto Grease
Controller
To Auto Grease
Controller
To DC-DC
Converter
Main Power Supply
to Fuse Box
To Room Lamp,
Diesel Heater,
Fuel Filler Pump,
DC-DC Converter
T
o
A
i
r
H
e
a
t
e
r
R
e
l
a y
From Safety
Limit SW T o
V
E
C
U
T
o
V
E
C
U
A
i
r
C
o
n .
S
W
E
M
S
P
o w
e
r
R
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l
a y
INSTRUMENT PANEL
Slow Blow
Fuse
40A 40A F30
10A
PRE
B + B R R 1 R 2 C A CC
OFF
ON
START
F16
15A F110A
Cluster
Control
B+
100A
Slow Blow
Fuse
80A
80A
B+
W
D+
B-IC Regulator
ES
AS4
ACC
R2
SS
C
AH
Key Switch
START
ON
OFF
pin pin
ACC
A
C
C
B R
C
C
R1
BR
R1
R2
R 2
B+
B+
Terminal
Stop(OFF)
Run(ON)
Start(START)
SWITCH CIRCUIT
B+ BR R1 R2 C ACC
Safety Start Relay Operation
(1)
S a
f e
t y
S
t a r
t
R e
l a y
Key "C" = 24V
Alternator "D+" = 0V
Safety Limit Switch = Off
Relay Turn On
(2)
S a
f e
t y
S
t a r
t
R e
l a y
Safety Limit Switch
Circuit
Switch Off
(lever lowered)
Com
Com
N.O
(not use)
N.O
N.C
N.C
Switch On
(lever raised)
Instrument Panel Operation
Indicator
C/Warning Buzzer
Coolant temp.
Engine oil press.
Over load
Yes
Yes
Brake failure
Quick fit
Charging
Air cleaner
Yes
No
Coolant level
Pre heating
Fuel heater
Parking
Hi beam
Turning Sig.
E/steering ready
E/steering oper.
Auto grease
No
No
Hammer
Shear
Power boost
Axle lock
Hyd. oil temp.
Water separator
Boom float
(1)
I n s
t r u
m
e
n
t
P a
n
e
l
Key "ACC" = 0V to "ACC" = 24V
Alternator "W" signal < 4 sec.
All Indicators
Turn On 3 sec.
Buzzer work
On, Off, On
I n s
t r u
m
e
n
t
P a
n
e
l
Centeral warning condition or/and
buzzer working condition
(exclude quick fit operation)
Centeral
warning Off
Buzzer Off
(2)
Buzzer stop
switch On
I n s
t r u
m
e
n
t
P a
n
e
l
Quick fit On
Centeral
warning
stay On
Buzzer Off
(3)
Confirm
switch On
I n s
t r u
m
e
n
t
P a
n
e
l
Quick fit Off
Centeral
warning
Off
Buzzer Off
(4)
Instrument Panel Circuit
C
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r
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a
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g
H
o u
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r
D
4
A
C
C
A
C
C
C
1
F u
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C
o
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a
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C
h
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E
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o
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C
o
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A
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B
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A u
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P
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F u
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Q u
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o
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C
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B
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D
2
0
C
3
D
9
C
2
D
7
D
1
8
D
1
9
D
1
7
D
1
0
D
1
2
D
1
3
D
5
P
a
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g
C
1
8
C
1
6
A
l
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"
W
"
B +
B + B + B + B + B + B + B + B + B + B + B +
B +
B u z
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B u z
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t
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C
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f
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V
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C
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C
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E
C
U
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C
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C
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A
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"
D +
"
G r e
a
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e
C o
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t .
C
1
1
C
9
C
1
9
D
1
1
D
1
D
3
D
1
4
D
6
C
2
0
C
1
5
C
1
3
C
1
7
C
1
4
D
2
C
1
2
C
8
C
1
0
C
7
C
4
C
5
I
L
L
I
L
L
Connector C Connector D
1
10
11 10
20
20 1
11
