ELECTRICAL SYSTEM AND TESTING
Test Procedures
Page 11-28
2005 Precedent IQ System Electric Golf Car Maintenance and Service Manual
11
Test Procedure 9E – Pins 8 and 16
See General Warnings, Section 1, Page 1-1.
Pins 8 and 16 in the 16-pin connector provide a connection point for the Forward/Reverse rocker switch to the
speed controller. The switch provides a +48 volt signal to the speed controller through pin 8 when the For-
ward/Reverse switch is in the FORWARD position and provides a +48 volt signal on pin 16 when the Forward/
Reverse switch is in the REVERSE position.
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 crossmember between the spring mount and side stringer, just forward of
each rear wheel.
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 200 volts DC, insert the red (+) probe of the multimeter into pin 8 (white wire)
of the 16-pin connector.
See following CAUTION.
Using an alligator clip, connect the black (–) probe to
the B– terminal of the speed controller
(Figure 11-14, Page 11-29)
.
CAUTION
• Do not fully insert probes into the 16-pin plug. Doing so can result in a poor connection.
5. Place the Tow/Run switch in the TOW position and connect the battery cables, positive (+) cable first.
Tighten battery terminals to 110 in-lb (12.4 N·m).
6. Place the Tow/Run switch in the RUN position and the Forward/Reverse switch in the NEUTRAL posi-
tion. The multimeter should indicate zero volts DC at this time.
7. While monitoring the multimeter, place the Forward/Reverse switch in the REVERSE position. The mul-
timeter should still indicate zero volts.
8. Place the Forward/Reverse switch in the FORWARD position. The multimeter should indicate full battery
voltage (approximately 48 volts).
9. Insert the red (+) probe of the multimeter into pin 16 (blue wire) of the 16-pin connector. Leave the black
(–) probe (alligator clip) connected to the B– terminal of the speed controller.
See previous CAUTION.
10. Place the Forward/Reverse switch in the NEUTRAL position. The multimeter should indicate zero volts
DC at this time.
11. While monitoring the multimeter, place the Forward/Reverse switch in the FORWARD position. The mul-
timeter should still indicate zero volts.
12. Place the Forward/Reverse switch in the REVERSE position. The multimeter should indicate full battery
voltage (approximately 48 volts).
13. If any other reading is obtained, check the following items:
•
Continuity of the wires in the wire harness
•
Forward/Reverse switch for proper operation.
See Test Procedure 15 – Forward/Reverse Rocker
Switch on page 11-36.
