Electrical System
66
Service Manual – SC8000
Pin
ID
Desig.
Pin Assignment
Signal
Nominal
Voltage at
Connector
(when
activated)
Ref,
To
Load or Supply
Characteristics
Comments
J1-32
Input
Hydraulic Filter Switch
Digital
voltage
0V
B-
Switch to ground
Ground or open, closed when filter plugged
J1-33
Input
Extend Scrub Level
Switch
Digital
voltage
0V
B-
Switch to ground Ground or open, closed when tank is empty
J1-34
Output
Ignition Inhibit
Low side
driver
0V
B-
MOSFET gate on
relay PCB assy. -
3 mA@12V
Ground or float
J1-35
Ground
J2-1
Output
Main Power Relay
Low side
driver
0V
B-
Relay coil - 0.29A
@12V
46 ± 5 ohms
J2-2
Output
Side Sweep/Scrub
Solenoid
Low side
driver
0V
B-
Hydraulic coil -
1.5A @12V
8 ohms @ 20°C
J2-3
Output
Side Scrub Lift
Solenoid
Low side
driver
0V
B-
Hydraulic coil -
1.5A @12V
8 ohms @ 20°C
J2-4
Output
Scrub Lock Solenoid
Low side
driver
0V
B-
Hydraulic coil -
1.5A @12V
8 ohms @ 20°C
J2-5
Output
Squeegee Down
Solenoid
Low side
driver
0V
B-
Hydraulic coil -
1.5A @12V
8 ohms @ 20°C
J2-6
Output
Squeegee Up
Solenoid
Low side
driver
0V
B-
Hydraulic coil -
1.5A @12V
8 ohms @ 20°C
J2-7
Output
Scrub Brush Solenoid
Low side
driver
0V
B-
Hydraulic coil -
1.5A @12V
8 ohms @ 20°C
J2-8
Vacuum Motor
Solenoid
Low side
driver
0V
B-
Hydraulic coil -
1.5A @12V
8 ohms @ 20°C
J2-9
Extended Scrub Water
Solenoid
Low side
driver
0V
B-
Solution solenoid
- 1.5A @12V
17W
J2-10
Side Scrub Solution
Solenoid
Low side
driver
0V
B-
Solution solenoid
- 1.0A @12V
11W
J2-11
Output
Backup Audible Alarm
Low side
driver
0V
B-
Electronic alarm
0.25A @12V
J2-12
Power
(B+)
Circuit Breaker 4
(VACC4)
Power
12 - 15 VDC
B-
System voltage
Power from circuit breaker 4 (20A)
