Section 11 - Electrical System And Testing; General Information - Club Car Precedent 2004 Maintenance And Service

SECTION 11 – ELECTRICAL SYSTEM AND
TESTING
∆
DANGER
• See General Warnings, Section 1, Page 1-1.
∆
WARNING
• See General Warnings, Section 1, Page 1-1.
• Shorting of battery terminals can cause personal injury or death.
- Do not place component mounting plate directly on top of batteries when removing or
installing plate.
- Remove plate from vehicle completely.

GENERAL INFORMATION

The IQ System vehicle uses a 48-volt electrical system that is powered by four 12-volt lead-acid batteries and
includes an onboard computer. The IQ System vehicle uses a shunt-wound 3.2 hp motor and includes several
additional features.
• Shunt-Wound Motor: The shunt-wound motor, unlike a series motor, is designed so that the speed
controller is able to vary the amount of current passing through the field coils independently from the
current passing through the armature.
• Motor Braking: Under certain conditions a shunt-wound motor also has the ability to act as an electri-
cal brake to slow the vehicle. There are three features of the IQ electrical system which will activate the
motor braking function: Zero Speed Detect, Pedal Down Motor Braking, and Pedal Up Motor Braking
(adjustable with the IQDM-P handset).
• Zero Speed Detect: This prevents the vehicle from rolling away uncontrolled should the driver park on
a slope and leave the vehicle without locking the park brake. The vehicle will roll at about 1 mph (1.6
km/h). If the zero speed detect function remains engaged for two seconds or more, a warning buzzer
will sound to alert the driver that motor braking has been activated.
∆
WARNING
• Zero speed detect will not limit vehicle speed to 1 mph (1.6 km/h) on very steep grades. Do not
operate vehicle on slopes exceeding 20% grades.
• Pedal Down Motor Braking: This feature helps to control vehicle downhill speed. Motor braking is
activated when the vehicle reaches the programmed top speed and holds the vehicle at that speed.
Motor braking is automatically disengaged when vehicle speed slows below the programmed top
speed.
2004 Precedent IQ System Golf Car Maintenance and Service Manual
11
Page 11-1