THE COMMUNICATION DISPLAY MODULE (CDM)
The CDM can be used to retrieve from the On-board Computer four important items of information that can
be useful in troubleshooting a DS Electric vehicle with PowerDrive System 48. To access one of these items,
the item’s corresponding Function Code must be selected on the CDM. This is done by pressing the Function
Button until the desired function code is displayed in the window (See Figure 17-11 for CDM features).
Releasing the button when the desired code is displayed will display the desired data. Function codes and
corresponding data are as follows:
• F1 - Battery voltage:
This displays the battery pack’s current state of
charge. A reading of less than 48 volts indicates
that the batteries need to be charged. If a read-
ing of less than 48 volts is obtained immediate-
ly after a charge cycle, there may be a problem
in the charge circuit.
• F2 - Energy units removed since last charge
cycle:
If the display reads over 75 (the vehicle’s Battery
Trouble Light should be illuminated), the vehi-
cle’s batteries need to be recharged before
being used again. This data can be used to
make sure that all vehicles in a fleet receive
equal usage on a short term basis.
• F3 - Total accumulated energy units removed
since initial vehicle start-up:
This information is most useful in making sure that all vehicles in a fleet receive equal usage over long
periods of time.
• F4 - Last charge termination type (1 = incomplete, 2 = DVDT, 4 = normal, 8 = max. timer):
A 1, 2, 4, or 8 will be displayed.
1 - Indicates that the last charge cycle was incomplete and that the batteries were not fully charged.
Batteries should be charged again at the earliest opportunity.
2 - Indicates that a back-up charge program was employed by the OBC to complete the charge cycle.
A DVDT charge may be displayed the first few times a new set of batteries is charged, and also the first
time a set of batteries is charged after the batteries have been disconnected and reconnected. A prob-
lem may exist if persistent DVDT readings are obtained.
4 - Indicates that the last charge cycle was normal.
8 - Indicates that the charger ran for sixteen hours and shut itself off without completing the charge
cycle. This means that there may be a problem in the charge circuit.
USING THE CDM TO RETRIEVE DATA FROM THE ON-BOARD COMPUTER
1. Turn the CDM on and press and release the function button until desired function appears.
2. Position the CDM under the rear of the vehicle so that it is aligned directly behind the on-board com-
puter (Figure 17-12, Page 17-23). Make sure the CDM’s infra-red LED receiver is pointed at the on-
board computer’s LED, and that there is a clear path between them (See NOTE at top of Page 17-23).
17-22
Club Car
R
COMMUNICATION
DISPLAY MODULE
DISPLAY FUNCTIONS:
PRESS AND HOLD
BUTTON TO SHOW
FUNCTION NUMBER.
RELEASE BUTTON TO
SHOW FUNCTION VALUE.
Func1 -
Func2 -
Func3 -
Func4 -
Battery voltage.
Energy units removed since last charge cycle.
Total accumulated energy units removed.
Last charge termination type (1 = Incomplete,
2 = DVDT, 4 = Normal, 8 = Max. timer).
POWER
PART #17075
ON
OFF
COMMUNICATION
DISPLAY MODULE
DISPLAY
WINDOW
FUNCTION
BUTTON
FIGURE 17-11
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