POWERDRIVE BATTERY CHARGER
Test Procedures
Page 14-12 1998/1999 PowerDrive Plus Maintenance and Service Supplement
14
TEST PROCEDURES
Read DANGER and WARNING on page 14-1.
GENERAL
The charger uses DC battery voltage through the onboard computer to close the charger relay which activates the
charger AC circuit. When the charger is operating properly, there is a 2 to 15 second delay after the DC cord is
plugged into the vehicle before the relay closes. This delay allows time for the DC plug to make a secure connection
with the receptacle before the AC circuit is activated and AC power is supplied to the primary coil of the transformer.
When the relay closes an audible “click” can be heard, and then as power is supplied, the transformer should hum
and the ammeter should indicate the charge rate.
Test Procedure 1 - Battery Voltage Too Low or Faulty Connection Between Plug and Recep-
tacle
1. Check the DC plug and receptacle for damage, dirt, corrosion, or any condition that might prevent a good
electrical connection.
2. Inspect the receptacle contacts to ensure that they are not damaged and they are firmly seated within the
receptacle.
3. Check the wire connections to the charger receptacle:
Figure 14-8 Flow Chart, Continued
COLUMN TWO
CONTINUED
FROM PREVIOUS PAGE
COLUMN ONE
CONTINUED
FROM PREVIOUS PAGE
IS
FUSE BLOWN?
CHARGE BATTERIES
CHECK BATTERY
VOLTAGE
IS
BATTERY
VOLTAGE 32V
OR HIGHER?
CHARGE BATTERIES FOR
APPROXIMATELY TWO
HOURS. RECONNECT
RELAY IN PROPER
CONFIGURATION
CHARGE BATTERIES
INSPECT CHARGER
RECEPTACLE FUSE.
IS
FUSE BLOWN?
CHARGE BATTERIES
CHARGE BATTERIES
REPLACE
ONBOARD COMPUTER
YES
NO
NO
YES
YES
NO
DOES
CHARGER
ACTIVATE?
REPLACE RELAY
CHECK DIODES AS
DESCRIBED IN
TEST PROCEDURE 4,
PAGE 14-14
DIODES OK?
REPLACE DIODE
(HEAT SINK ASSEMBLY)
CHECK AMMETER
AMMETER
OK?
REPLACE AMMETER
SEE TROUBLESHOOTING
GUIDE
YES
NO
NO
YES
YES
NO
DETERMINE CAUSE
AND REPLACE FUSE
DETERMINE CAUSE
AND REPLACE FUSE
CHARGE BATTERIES
CHARGE BATTERIES
CHARGE BATTERIES
BY-PASS CHARGER
RELAY AS DESCRIBED IN
TEST PROCEDURE 6,
PAGE 14-16
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