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(**)
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