Cushman SHUTTLE 4X Technician's Repair And Service Manual page 71

Read all of Section B and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
1311 Display Explanation
High Pedal Disable
Controller powers up
with Key, Direction and
HPD (HIGH PEDAL
Throttle applied OR
DISABLE)
Throttle applied before
Key and Direction
switch applied
THERMAL
Over/Under
CUTBACK
Temperature Cutback
Battery Voltage >
OVERVOLTAGE
OVERVOLTAGE MIN
parameter
Battery Voltage < LOW
LOW BATTERY
VOLTAGE MAX
VOLTAGE
parameter
THROTTLE FAULT Throttle Input Fault
1 - Reduce Armature duty cycle to zero.
2 - Reduce Field current to zero
3 - Turn off Main Contactor
4 - "Limp Home" in slow speed. Armature Duty Cycle = 75% Max, Field Min = 10.0 Amps
5 - Gradual reduction in armature Drive current limit
6 - Quickly reduce armature duty cycle to zero until speed sensor pulses reappear
7 - Gradual Reduction in Regen Current Limit
8 - Internal Scaled Throttle Signal set to Zero
9 - Commence Walk-Away Function
ELECTRONIC SPEED CONTROL - TCT
Controller
Tested When
Response
KSI ON, Forward or
Reverse ON
Continuous
Continuous
Continuous
Continuous
Controller Fault Responses
Fig. 7 Controller Faults and Troubleshooting
Repair and Service Manual
Recover
When
1. Incorrect sequence of Vehicle input
controls
8 Throttle < 25%
2. Defective Throttle device
1. Temperature >85°C or < -25°C
2. Excessive load on vehicle
5 Condition clears
3. Improper mounting of controller
4. Operation in extreme environment
7 Condition clears 1. Battery Voltage > Shutdown limit
1. Battery Voltage < Cutback Limit
5 Condition clears 2. Corroded Battery Terminal
3. Loose Battery or Controller terminal
1. Throttle wiring open or shorted
8 Condition clears
2. Defective Throttle device
B
B
Possible Cause
Page F-7