DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL
Page
26
April 1999
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 too low during the 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.
NO GRAPHIC FOR THIS
STATUS CODE
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.
KEY SWITCH
L
P1
P17 P2 P6
F
OOT
S
W
.
P18
1A
O
R
SP D
V
R
LEFT CONTROL (MASTER)
P12
L
E
F
T
T
URN S
W
.
B
P10
3
1
2
FU3
DRIVER
BLOCK
FU1
LINE
+
12V
P21
P11
RIGHT
CONTROL
(SLAVE)
POWER CONNECTIONS
LEFT CONTROL
POS
A1
F1
NEG
A2
F2
FI
ELD
A
R
M
A
T
URE
+
-
-
48V
