2005 Precedent IQ System Electric Golf Car Maintenance and Service Manual
Page 15b-1
15B
SECTION 15B – MOTOR (MODEL EJ4-4001)
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DANGER
• See General Warnings, Section 1, Page 1-1.
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WARNING
• See General Warnings, Section 1, Page 1-1.
GENERAL INFORMATION
The IQ System vehicle is equipped with a 48-volt DC, shunt-wound, reversible traction motor. The shunt-
wound motor is designed for use on IQ System vehicles only. Club Car recommends that motors requiring
major repair be sent to a qualified motor repair shop; however, there are many relatively simple tasks that can
be performed by a technician with general knowledge and experience in electric motor repair.
MOTOR IDENTIFICATION
There are two types of motors used in 2005 model year IQ System electric vehicles: Model 5BC59JBS6365
(gray housing), and EJ4-4001 (black housing). Do not attempt to service a motor that has not been properly
identified. If the motor cannot be properly identified, contact your local Club Car dealer or distributor.
EXTERNAL MOTOR TESTING
The following tests can be performed without disassembling the motor using a multimeter or continuity tester.
NOTE: Tag the motor wires for identification before disconnecting.
TEST PROCEDURE 1 – INTERNAL SHORT CIRCUITS
See General Warnings, Section 1, Page 1-1.
1. Disconnect the battery cables as instructed.
See WARNING “To avoid unintentionally starting...” in
General Warnings, Section 1, Page 1-2.
2. Disconnect wires from terminals on motor using two wrenches to prevent posts from turning.
3. With a multimeter set to 200 ohms, place black (–) probe on motor housing. Scratch through paint to
ensure a good connection. Place red (+) probe on A1, A2, S1, and S2 terminals respectively. Multimeter
should indicate no continuity between the motor housing and all individual terminals. If readings are
incorrect, motor will need to be removed from the vehicle and repaired by a qualified technician.
See
Motor Removal on page 15b-2.
3.1. An incorrect reading from the A1 or A2 terminal indicates three possible problems: a grounded A1
or A2 terminal, a grounded wire in the brush area, or a grounded armature/commutator. An incor-
rect reading for the S1 or S2 terminal indicates a possible grounded S1 or S2 terminal or field coil.
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