ELECTRICAL SYSTEM AND TESTING
Troubleshooting
2008-2011 IQ Plus Electric Vehicle Maintenance and Service Supplement
Page 11-45
11
COMMUNICATION DISPLAY MODULE (CDM)
The CDM can be used to retrieve from the onboard computer four important items of information that can be
useful in troubleshooting the IQ Plus vehicle. 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 11-32, Page 11-45 for CDM features.
Releasing the button
when the desired code is displayed will display the data. Function codes and corresponding data are as fol-
lows:
• 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 reading of less than 48 volts is obtained immediately 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 battery warning light should be illuminated), the vehicle batter-
ies need to be recharged before being used again. This data can be used to make sure 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 (0 = no charge history, 1 = incomplete, 2 = DVDT, 4 = normal, 8 =
max. timer):
A
0, 1
,
2
,
4
, or
8
will be displayed.
0 --
Indicates that no charge history has been recorded by the OBC.
Figure 11-32 CDM
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
LOW
BATTERY
DISPLAY
WINDOW
FUNCTION
BUTTON
LOW BATTERY
INDICATOR
