SERVICE MANUAL
ENGLISH
BR 601 / BR 651 / BR 751 / BR 751 C
909 6424 000(3)2007-12
87
ELECTRICAL SYSTEM
TROUBLESHOOTING (Continues)
FUNCTION ELECTRONIC BOARD CONNECTION REFERENCE
Connectors
Key:
J1
Dashboard inputs/outputs
J2
Auxiliary inputs/outputs 1
J3
Auxiliary inputs/outputs 2
J4
Brush deck actuator
J5
Fan
J1
PIN
Description
Reference voltage
Electronic board
in/out
1
Logical power from key (+)
24 V
In
2
Dashboard power supply (-)
0 V
Out(**)
3
Return from brush deck lifting/lowering switch
Indef (0 V)
In
4
Return from extra pressure switch
Indef (0 V)
In
5
Return from vacuum system on/off switch
Indef (0 V)
In
6
Brush deck lifting/lowering switch LED power supply (LED1)
Indef (0 V)
Out
7
Extra pressure function switch LED power supply
Indef (0 V)
Out
8
Vacuum system on/off switch LED power supply
Indef (0 V)
Out
9
Battery GREEN LED power supply
Indef (0 V)
Out
10
Battery YELLOW LED power supply
Indef (0 V)
Out(**)
11
Battery RED LED power supply
Indef (0 V)
Out
12
Pressure switch output
0 - 5 V
Out(**)
13
Solenoid valve adjustment input 1
Indef (0 V)
In
14
Solenoid valve adjustment input 2
Indef (0 V)
In
15
Horn input
Indef (0 V)
In
16
Solenoid valve output (repetition of J2.2)
Indef (0 V)
Out
J2
PIN
Description
Reference voltage
Electronic board
in/out
1
Solenoid valve power supply
24 V
Out
2
Solenoid valve power supply
Indef (0 V)
Out
3
Squeegee actuator power supply
24 V
Out
4
Squeegee actuator power supply
Indef (0 V)
Out
5
Return from driver's seat microswitch
Indef (0 V)
In
6
Pressure switch input
0 - 5 V
In
7
Auxiliary power supply (+)
+24 V
Out(**)
8
Auxiliary power supply (-)
0 V
Out(**)
