Club Car Precedent 2014, Maintenance And Service Manual

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IQ DISPLAY MODULE (IQDM) AND IQDM-P
DIAGNOSTICS: EXCEL SYSTEM WITH ERIC
CHARGING Faults Menu
26
FAULTS MENU
CAUTION
• A failed motor will damage the controller. Always inspect the motor before replacing the controller.
See External Motor Testing, Section 17, Page 17-1.
NOTE: The software is subject to frequent updates, and this manual spans many versions. Be aware that some faults
listed in this manual may not display in the IQDM, indicating older software.
The faults menu is accessed by using the up or down arrow to scroll to faults and pressing the right arrow key to
activate the menu.
Faults displayed in the faults menu will aid the trained technician in troubleshooting the vehicle. Faults displayed often
indicate which components in the electrical system need to be tested.
Since the faults menu is updated while the vehicle is in operation, the trained technician has the ability to monitor
the occurrence of faults in conditions or locations where a problem with vehicle performance has been reported.
See following WARNING.
WARNING
• The vehicle operator should not monitor the handset while the vehicle is in motion. A technician
can monitor the handset while traveling as a passenger in the vehicle. Failure to heed this warning
could result in severe personal injury or death.
SYSTEM FAULTS
The system faults menu displays all of the faults detected by the speed controller since the last time the fault history
has been cleared. The faults displayed in this menu may or may not be currently active. Once a fault has been
detected, it is stored in the memory of the speed controller for display on the
fault history menu. Each detected fault is
listed only once, even if the fault has occurred multiple times.
Causes of Faults
Some common causes of faults are:
• Loose, broken, or disconnected wires or connectors
• Failed components
• Improper adjustment or installation of electrical or mechanical components (examples: brake adjustment, improper
MCOR installation)
• Improper wiring of electrical components
As shown above, there are many possible causes for faults to occur, and the speed controller has a programmed
reaction to each fault that is based on the fault currently detected. The technician should be familiar with the detected
faults and the controller’s reactions to faults to ensure a proper diagnosis.
An example of a possible mis-diagnosis of a vehicle due to a fault: If the three-pin speed sensor wire has been
disconnected, the speed controller will detect a
speed sensor fault. When a speed sensor fault is detected, the
controller responds to the fault by limiting the vehicle speed to 1/2 of its normal top speed. If the technician reaches
the conclusion that the vehicle is running slowly because batteries are heavily discharged, he has made an improper
diagnosis of the problem.
2014 Precedent ® Golf Car Maintenance and Service Manual Page 26-9