Cushman MINUTE MISER - Troubleshooting Chart

ELECTRONIC SPEED CONTROL
Page F-2
Owner’s Manual and Service Guide
Read all of manual to become thoroughly familiar with this vehicle. Pay particular attention to all Notes, Cautions and Warnings
TROUBLESHOOTING CHART
LED
CODE
PROGRAMMER LCD DISPLAY EXPLANATION POSSIBLE CAUSE
1,2 HW FAILSAFE hardware fail-safe error 1. Controller defective.
1,3 M-FAULT M-output shorted
1. M-output shorted to ground.
2. Direction contractor not closing.
3. Direction contractor not closing fast
enough.
4. Internal motor short to ground.
1,4 SRO SRO fault
1. Improper sequence of KSI, brake
and direction inputs.
2. Wrong SRO type selected.
3. Brake or direction switch circuit
open.
4. Sequencing delay too short.
2,1 THROTTLE FAULT 1 5kOhm-0 or wiper fault
1. Throttle input wire open.
2. Throttle input wire shorted to ground
or B+.
3. Throttle pot defective.
4. Wrong throttle type selected.
2,2 BB WIRING CHECK emer, reverse wiring fault
1. BB wire open.
2. BB check wire open.
2,3 HPD HPD sequencing fault
1. Improper seq. of KSI, brake, throttle
inputs.
2. Wrong HPD type selected.
3. Misadjusted throttle pot.
2,4 THROTTLE FAULT 2 Pot Low broken or shorted
1. Pot Low wire open.
2. Pot Low wire shorted.
3. Wrong throttle type selected.
3,1 CONT DRVR OC driver output overcurrent
1. Direction contactor coil shorted.
2. Shunt field shorted.
3,2 DIR CONT WELDED welded direction contactor 1. Direction contactor stuck closed.
3,4 MISSING CONTACTOR missing contactor or shunt
1. Direction contactor coil open.
2. Direction contactor missing.
3. Shunt field open.
4. Wire to shunt or direction contactor
open.
4,1 LOW BATTERY VOLTAGE low battery voltage
1. Battery voltage <16 volts.
2. Corroded battery terminal.
3. Loose battery or controller terminal.
4,2 OVERVOLTAGE overvoltage
1. Battery voltage >45 volts.
2. Vehicle operating with charger
attached.
Fig. 4 Troubleshooting Chart