Club Car Precedent 2014, Руководство по техническому обслуживанию и ремонту

Страница: 471 / 548

EXCEL SYSTEM TROUBLESHOOTING: WITH
ERIC CHARGING Test Procedures
28
TEST PROCEDURE 11 – MCOR Voltage
See General Warnings on page 1-2.
NOTE: This is a voltage test.
The accelerator position, which is proportional to the MCOR voltage, can be displayed with the IQDM handset. If an
IQDM handset is not available, proceed to
MCOR Voltage Test without the IQDM Handset .
The following are potential MCOR symptoms:
• Vehicle will not drive due to no FOOT INPUT to the controller.
• Vehicle will not reach top speed because MCOR does not reach 100% throttle position.
• Vehicle does not maintain speed nor will it accelerate due to MCOR having a “dead-spot” in its pedal travel.
• The voltage signal from the MCOR randomly or sporadically fluctuates with pedal at rest, during pedal travel and
with pedal fully pressed.
MCOR Voltage Test with the IQDM Handset
1. 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 on page 1-2. See also following WARNING.
WARNING
• The key switch should be placed in the OFF position and left in the OFF position for the duration
of this test.
2. Connect the IQDM to the vehicle.
3. Access the Monitor menu and select THROTTLE % by using the SCROLL DISPLAY buttons.
4. The IQDM should indicate 0% with the pedal not pressed. While monitoring the IQDM display screen, slowly
press the accelerator pedal. As the pedal is pressed, the IQDM should indicate a steady, incremental rise from
0% (pedal not pressed) to 100% (pedal fully pressed).
See following NOTE.
NOTE: Observe closely to see if throttle input percentage randomly or sporadically fluctuates with pedal at rest, during
pedal travel and with pedal fully pressed. If it fluctuates, the MCOR is defective and must be replaced.
5. If the MCOR passes the previous test, press and hold the accelerator pedal to the floor. By hand, gently move
the pedal from side to side and see if the throttle input percentage fluctuates from 100%. If it fluctuates, the
MCOR is defective and must be replaced.
6. If throttle input percentage does not reach 100% in the previous steps, proceed to MCOR Voltage Test without
the IQDM Handset.
MCOR Voltage Test without the IQDM Handset
1. 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 on page 1-2. See also following WARNING.
2014 Precedent ® Golf Car Maintenance and Service Manual Page 28-27