13
Faults Menu
IQ DISPLAY MODULE (IQDM) AND IQDM-P
DIAGNOSTICS: IQ SYSTEM
The speed controller, after detecting a fault, will respond in one or more of the following ways:
• A. Reduce vehicle speed to zero by reducing armature current
• B. Reduce vehicle speed to zero by reducing field current to zero
• C. Turn off the solenoid
• D. Cause the vehicle to run at half speed
• E. Gradually reduce the armature current limit
• F. Quickly reduce the armature current until speed sensor pulses occur
• G. Reduce field current and beep reverse buzzer at a fast rate
CONTROLLER FAULT
CONTROLLER RESPONSE
HW FAILSAFE
A, B, C
KEY SWITCH SRO
C
THROTTLE FAULT 1
A
SPEED SENSOR
D
MAIN WELDED
D
MAIN DRIVER ON
D
MAIN DRIVER OFF
A, C
HIGH SPEED WALKAWAY
D
MAIN COIL FAULT
A
FIELD MISSING
A, B, C
HPD
A
PROC/WIRING
A
OVERVOLTAGE
A, B, G
LOW BATTERY
E
THERMAL CUTBACK
E
MOTOR STALL
F
MAIN DROPOUT
A, C
OPEN ARMATURE
A
MAX PASSWORD TRIES
(no action taken)
INCORRECT PASSWORD
(no action taken)
Page 13-8
2009 Electric Precedent Maintenance and Service Manual