ELECTRICAL SYSTEM AND TESTING
Test Procedures
2005 Precedent IQ System Electric Golf Car Maintenance and Service Manual
Page 11-23
11
If the results of any of the referenced procedures are different from those described in the procedure, check
the continuity of the wires in the wire harness and test the connected components with the appropriate test
procedures.
See Index of Test Procedures on page 11-14.
Test Procedure 9A – Pins 1, 2, and 3
See General Warnings, Section 1, Page 1-1.
Pins 1, 2, and 3 in the 16-pin connector provide a connection point from the MCOR potentiometer to the
speed controller.
1. Disconnect the battery cables as instructed.
See WARNING “To avoid unintentionally starting...” in
General Warnings, Section 1, Page 1-1.
2. Place chocks at the front wheels and lift the rear of the vehicle with a chain hoist or floor jack. Position
jack stands under the frame rails just forward of each spring mount.
See WARNING “Lift only one
end...” in General Warnings, Section 1, Page 1-2.
3. Disconnect the 16-pin connector at the speed controller.
4. Using a multimeter set for 20k ohms, insert the red (+) probe of the multimeter into pin 2 (yellow wire) of
the 16-pin connector.
See following CAUTION.
Insert the black (–) probe into pin 3 (purple wire) of the
16-pin connector
(Figure 11-10, Page 11-24)
.
CAUTION
• Do not fully insert probes into the 16-pin plug. Doing so can result in a poor connection.
5. With the accelerator pedal fully up (not pressed), the multimeter should read approximately 1k ohms.
6. Slowly press the accelerator pedal while monitoring the multimeter. The resistance should rise as the
pedal is pressed. When the pedal is all the way to the floor, the multimeter should indicate between 5.67k
ohms and 7.43k ohms.
SPEED CONTROLLER 16-PIN CONNECTOR WIRE
TEST PROCEDURE
Pin 1 – White/Black (18-gauge)
Test Procedure 9A – Pins 1, 2, and 3 on page 11-23
Pin 2 – Yellow (18-gauge)
Pin 3 – Purple (18-gauge)
Pin 4 – Open (No wire)
Pin 5 – Light Blue (18-gauge)
Test Procedure 9B – Pin 5 on page 11-24
Pin 6 – Green (18-gauge)
Test Procedure 9C – Pin 6 on page 11-25
Pin 7 – Orange/White (18-gauge)
Test Procedure 9D – Pin 7 on page 11-27
Pin 8 – White (18-gauge)
Test Procedure 9E – Pins 8 and 16 on page 11-28
Pin 9 – Gray (18-gauge)
Test Procedure 9F – Pin 9 on page 11-29
Pin 10 – Tan (18-gauge)
Test Procedure 9G – Pin 10 on page 11-30
Pin 11 – Open (no wire)
Pin 12 – Blue/White (18-gauge)
Test Procedure 9H – Pin 12 on page 11-31
Pin 13 – Black/White (18-gauge)
Test continuity of each wire and perform
Test Procedure 13 – Motor Speed Sensor on page 11-34
Pin 14 – Light Green (18-gauge)
Pin 15 – Red (18-gauge)
Pin 16 – Blue (18-gauge)
Test Procedure 9E – Pins 8 and 16 on page 11-28
