Logic Voltage Reference Table - Taylor-Dunn B0-254-48 Operation, T Roubleshooting And Replacement Parts Manual

Electrical Troubleshooting

Logic Voltage Reference Table

* - All voltages made referencing main negative unless specified otherwise
** - The voltage should start at approximately 24 volts, then drop to approximately 15 volts after
about 0.5 seconds.
Sevcon Troubleshooting
Page 18
Pin# Condition
Key switch off
1
Key switch on
F&R in forward
2 F&R in neutral
F&R in reverse
F&R in reverse
F&R in neutral
3
F&R in forward
Accelerator pedal up
4
Accelerator pedal down
Seat switch closed (depressed)
5
Seat switch open
High/low switch in high
6
High/low Switch in low
Hand brake switch closed
7
Hand brake switch open
Key switch on (ref battery positive)
8
Key switch off (ref battery positive)
System off (ref battery positive)
9
System on (ref battery positive)
Accelerator pedal up
10
Accelerator pedal down
11 Not used
12 Not used
Volts*
0.0 volts
Battery volts
Low
High
Low
High
High
Low
Low
High
Low
High
Low
High
**
Battery volts
0 volts
**
0.0-0.3 volts
4.8-5.0 volts
-
-