79
- FORM NO. 56043115 - 34 RST
Electrical System
Drive Status LED Fault Codes
TABLE 1
LED
Code
Status Light
Display
Explanation
Possible Cause
1,1
0 0
over-/under-temperature cutback
1. Temperature >92°C or < -25°C.
2. Excessive load on vehicle.
3. Operation in extreme environments.
1,2
0 00
throttle fault
1. Palm drive switch wires open or shorted.
2. Palm switches defective.
3. Wrong throttle type selected.
1,3
0 000
speed limit pot fault
1. Speed limit pot wire(s) broken or shorted.
2. Broken speed limit pot.
1,4
0 0000
battery voltage too low
1. Battery voltage <17 volts.
2. Bad connection at battery or controller.
1,5
0 00000
battery voltage too high
1. Battery voltage >48 volts.
2. Vehicle operating with charger attached.
3. Intermittent battery connection.
2,1
00 0
main contactor driver Off fault
1. Main contactor driver failed open.
2,3
00 000
main contactor fault
1. Main contactor welded or stuck open.
2. Main contactor driver fault.
2,4
00 0000
main contactor driver On fault
1. Main contactor driver failed closed.
3,1
000 0
fault present for >10 sec.
1. Broken palm drive switch.
2. Broken speed limiting pot.
3,2
000 00
brake On fault
1. Electromagnetic brake driver shorted.
2. Electromagnetic brake coil open.
3,3
000 000
pre-charge fault
1. Low battery voltage.
2. KSI and palm drive switch turned on at same
time.
3,4
000 0000
brake Off fault
1. Electromagnetic brake driver open.
2. Electromagnetic brake coil shorted
3,5
000 00000
HPD (High Pedal Disable) fault
1. Incorrect sequence of palm drive switch and
KSI.**
2. Faulty or shorted palm drive switch.
4,1
0000 O
current sense fault
1. Short in motor or in motor wiring.
2. Controller failure. *
4,2
0000 00
motor voltage fault (hardware
failsafe)
1. Motor voltage does not correspond to throttle
request.
2. Short in motor or in motor wiring.
3. Controller failure. *
4,3
0000 000
EEPROM fault
1. EEPROM failure or fault.
4,4
0000 0000
power section fault
1. EEPROM failure or fault.
2. Short in motor or in motor wiring.
3. Controller failure. *
* Jack up vehicle and retest to confirm diagnosis. Clean connections, inspect system wiring, and retest.
**
Note:
A KSI (key switch input) system problem is a specific HPD (high pedal disable) type operational fault caused by the operator activating palm
drive switch before turning on the main key switch. This can be cleared by releasing both palm drive switches and cycling the key switch OFF
and ON.
