DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL
Page
29
March 2000
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-49
Motor field current is too low during the
run mode.
This status code will be displayed when the current
draw in the motor field is less than 3.1 amps, while the
armature current is greater than 100A for 2.0 seconds
during run mode.
MEMORY RECALL
NO
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Control will not operate.
POSSIBLE CAUSE
Defective control.
??
Replace controller unit.
FU3
FU5
KEY SWITCH
*
CONTROL
POWER
CONNECTION
POS
A1
NEG A2
ARMATURE
FU1
LINE
A2
A1
*
*
1A
*
OSC CARD CONNECTIONS
L
1A
DIRECT SW.
P18 P17
P2
P6
P4
SEAT SW.
*
SP
P3
*
FWD
REV
P5
*
ACCEL
START
SW.
P1 P7
P9
*
F1
F2
FIELD
F1
F2
ACCEL
START
S W .
+
-
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-51
Capacitor volts are low before the line
contactor closes.
This status code will be displayed during “key on”
when the capacitor volts is less than 85% of battery
volts at initial key switch on.
MEMORY RECALL
NO
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Line contactor does not close when capacitor
does not precharge.
POSSIBLE CAUSE
Defective control fuse.
??
Check control fuse for open circuit. Replace
fuse, if necessary.
Defective control.
??
Replace controller unit.
FU3
FU5
KEY SWITCH
*
CONTROL
POWER
CONNECTION
POS
A1
NEG A2
ARMATURE
FU1
LINE
A2
A1
*
*
1A
*
OSC CARD CONNECTIONS
L
1A
DIRECT SW.
P18
P17
P2
P6
P4
SEAT SW.
*
SP
P3
*
FWD
REV
P5
*
ACCEL
START
SW.
P1 P7 P9
*
F1
F2
FIELD
F1
F2
ACCEL
START
SW.
+
-