Fld (Field) Missing; Hpd; Overvoltage; Low Battery Voltage (Undervoltage) - Club Car 2009-20011 Electric Precedent Maintenance And Service Manual

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Faults Menu

FLD (FIELD) MISSING

If the speed controller is operating at a duty cycle of greater than 90% (almost full speed) and the field current is less
than 3 amps, a field missing fault is detected by the speed controller.
CAUTION
• A failed motor will ruin a controller. If a new controller is installed in a vehicle with a bad motor, the
bad motor will blow the field FET in the new controller. Always check the motor before replacing a
controller when a FLD Missing fault is shown.
What it means: Not necessarily a controller issue.
What to do: Check in this order: continuity of orange and blue motor field wires, short in motor, and then controller.

HPD

The HPD (High Pedal Detect) fault is detected if the accelerator pedal is already depressed when the key switch is
turned to the ON position. This fault is also detected if the accelerator pedal is pressed when the selected direction
is changed by pressing the Forward/Reverse switch. This fault, when not caused by the operator, can indicate
that the pedal limit switch has failed closed.
What it means: The pedal is depressed before the key switch and/or the FNR is switched on. This is a safety
control and the controller must see the pedal engaged last in the following sequence: key switch first, FNR second,
and then pedal last.
What to do: Check throttle percentage and, if at 0, issue is driver error.

OVERVOLTAGE

If the speed controller detects that the battery voltage is too high (68.4 to 75.6 volts DC), the overvoltage fault
is detected.
What it means: Occurs when the controller sees 72 or more volts. Reverse Buzzer beeps when fault occurs and the
car will freewheel.
What to do: Check to see if car has been towed without being put into "Tow" mode. Check charger relay because,
in Excel vehicles, bypassing the relay in the charger could cause the controller to read an overvoltage fault. Note
too that Excel vehicles, on hilly courses, may see this fault if the driver turns the key switch off while the vehicle is
in motor braking mode.

LOW BATTERY VOLTAGE (UNDERVOLTAGE)

If the battery voltage falls below 34 volts ±5%, the low battery voltage fault is detected by the speed controller.
What it means: Voltage coming into the controller is at, or less than, 34 volts.
What to do: Check battery voltage under a load.

THERMAL CUTBACK

If the controller heatsink temperature is found to be in excess of 85 °C ±5 °C (185 °F ±9 °F) or below –25 °C ±5 °C
(–13 °F ±9 °F), the thermal cutback fault is detected.
What it means: Heatsink temperature rises above 85°C. (185°F).
Page 16-12 2009-2011 Electric Precedent Maintenance and Service Manual
IQ DISPLAY MODULE (IQDM) AND IQDM-P
DIAGNOSTICS: EXCEL SYSTEM