Organizational Troubleshooting (continued)
TEST OR INSPECTION
Tag and disconnect cables from terminals A1 (15) and Xl (13).
Tape lugs on end of cables to prevent shorting.
Battery power may be present at terminals on back of control
panel and electrical bay when battery is connected. Do not
touch any bare terminals.
Measure for 0 vdc from terminal A1 of contactor to ground
Connect jumper wire (gage 20 or larger) between terminals A2
and Xl. Connect jumper wire (gage 20 or larger) between
terminal X2 and ground.
Measure for +24 vdc between terminal A1 of contactor and
ground. If voltage is not present, replace contactor
Remove jumper wires.
If measurements in steps f and j were good, contactor is
good. Reconnect cables and replace terminal shield.
BATTERY OUTPUT/TRACTION MOTOR CONTACTOR K3 MALFUNCTION.
If the battery output/traction motor contactor is suspected of malfunction,
teat the relay as follows:
a. Set all control panel switches to OFF.