DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL Page 34
January 2000
TRACTION
STATUS CODE DESCRIPTION OF STATUS CAUSE OF STATUS INDICATION
-49 Motor field current is too low during therun 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.
KEY SWITCH
L
P7
P1
P17 P2 P6 P9
P3 P12P8
P4 P5
SEAT SW.
START SW.
FOR. SW.
REV.
SW.
P10
P18
PY7
PY12
PY10
PY11
SP
P1
P5
P4
P2
FU7
TO
ACCESSORIES
FU6 P3
OSCILLATOR CARD
LEFT CONTROL
FU1
STEER
ANGLE
POT
LINE
POWER
CONNECTIONS
LEFT CONTROL
POS A1 F1
NEG A2 F2
FIELD
ARMATURE
ACC POT BDI INTERRUPT
+
-
SP
SP
FU4
A1
FU2
P
P
POWER
CONNECTIONS
RIGHT CONTROL
POS A1 F1
NEG F2
FIELD
ARMATURE
FU5
BRAKE SW.
A2
TRACTION
STATUS CODE DESCRIPTION OF STATUS CAUSE OF STATUS INDICATION
-51 Capacitor volts are low before the linecontactor closes. This status code will be displayed during “key on”
when the capacitor voltage 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
P7
P1
P17 P2 P6 P9
P3 P12P8
P4 P5
SEAT SW.
START SW.
FOR. SW.
REV.
SW.
P10
P18
PY7
PY12
PY10
PY11
SP
P1
P5
P4
P2
FU7
TO
ACCESSORIES
FU6 P3
OSCILLATOR CARD
LEFT CONTROL
FU1
STEER
ANGLE
POT
LINE
POWER
CONNECTIONS
LEFT CONTROL
POS A1 F1
NEG A2 F2
FIELD
ARMATURE
ACC POT BDI INTERRUPT
+
-
SP
SP
FU4
A1
FU2
P
P
POWER
CONNECTIONS
RIGHT CONTROL
POS A1 F1
NEG F2
FIELD
ARMATURE
FU5
BRAKE SW.
A2