DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL
Page
22
July 2002
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-27
12V buss is too low.
This status code will be displayed when the internal
power supply of the control dips below 9.35V.
MEMORY RECALL
YES
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Line contactor opens and closes and
then can only be closed by opening
and closing the key switch.
POSSIBLE CAUSE
Discharged battery.
•
=
Check battery to insure proper
state of charge. Voltage may be
dropping below 15V under load.
Loose connection at P1.
•
=
Insure that the wire connection at
P1 is tight.
Defective control.
•
=
Replace controller unit.
FU3
KEY
SWITCH
P1
P2
NEG
+
-
CHARGER SWITCH
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-41
Shorted thermal protector (TP) or
transistor over temperature.
This status code will be displayed when the voltage at
the thermal protector is too low.
MEMORY RECALL
YES
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Reduced or no power to traction motor in
control range.
POSSIBLE CAUSE
Control is in thermal cut back.
•
=
Allow control to cool, status code
should disappear.
Defective control.
•
=
Replace controller unit.
(Values of greater than 4 V at the thermal
protector are typically indicative of a failed
control.)
GE Sentry for Windows
software can be
used to monitor control operation, and it
will display a value for the thermal
protector that is greater than 84
(corresponding to 1.65V), triggering this
status code.