Communication Display Module Troubleshooting Guide - Club Car Gasoline Service Manual

COMMUNICATION DISPLAY MODULE TROUBLESHOOTING GUIDE

20A
Use this chart as a starting point for troubleshooting problems with communications between the CDM and
E
on-board computer. Contact your Club Car representative for more comprehensive information.
Dead CDM battery
Replace CDM battery
* On some 1995 PowerDrive System 48 vehicles manufactured between weeks 9526 and 9546,
the infra-red light projection lens (LED) in the on-board computer may be partially covered by a
clear sealant used when assembling the computer. If this occurs, the communication display
module (CDM) may not receive information from the computer. This condition may be corrected
by using a razor knife or a small cutting tool to remove any excess sealant material from the
area around the projection lens. Use CAUTION. Do not damage the lens when removing the
sealant. See Club Car Service Bulletin No. 95-12 for complete information.
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OBC Will Not Communicate
OBC is in a
powerdown mode
Remove "+" battery
Restart OBC by
lead and discharge
driving car or by
the speed controller.
connecting charger
DC plug
replace the lead and
With The CDM
Bad CDM unit
Replace CDM
OBC program is
"locked up"
After a short time,
restart the OBC.
CDM LED is dirty
or has moisture
condensation on it*
Clean the LED lens
OBC is bad
More than 75
EUs or 75% of
energy removed
from batteries