IQ SYSTEM TROUBLESHOOTING
Communication Display Module (CDM)
11
COMMUNICATION DISPLAY MODULE (CDM)
Club Car
R
COMMUNICATION
DISPLAY MODULE
DISPLAY FUNCTIONS:
PRESS AND HOLD
BUTTON TO SHOW
FUNCTION NUMBER.
RELEASE BUTTON TO
SHOW FUNCTION VALUE.
F
u
nc1
-
F
u
nc2
-
F
u
nc3
-
F
u
nc4
-
B
attery
voltage
.
E
nergy
units
removed
since
last
charge
cycle
.
T
otal
accumulated
energy
units
removed
.
L
ast
charge
termination
type
(1
=
I
ncomplete,
2
=
DVDT
,
4
=
N
ormal,
8
=
M
ax
.
timer)
.
POWER
PART
#17075
ON
OFF
LOW
BATTERY
1
2
3
1. Low Battery 2. Display Window 3. Function Button
2500-19200-10300
Figure 11-18
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 System 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 11-18, Page 11-35 for CDM features.
Releasing the button when the desired code is displayed
will display the 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 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 batteries 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 (1 = incomplete, 2 = DVDT, 4 = normal, 8 = max. timer):
• A
1
,
2
,
4
, or
8
will be displayed.
•
1
– Indicates the last charge cycle was incomplete and the batteries were not fully charged. Batteries should be
charged again at the earliest opportunity.
•
2
– Indicates 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 the first time a set of batteries is
charged after the batteries have been disconnected and reconnected. A problem may exist if persistent DVDT
readings are obtained.
•
4
– Indicates the last charge cycle was normal.
2009 Electric Precedent Maintenance and Service Manual
Page 11-35
