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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 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.
KEY SWITCH
L
P7
P1
P17
P2
P6
P9
P3
P12 P8
P4
P5
SEAT SW.
START SW.
FOR. SW.
REV.
SW.
P10
P18
PY7
PY12
PY10
PY11
SP
P1
P5
P4
P2
F
U
7
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 line
contactor 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
P12 P8
P4
P5
SEAT SW.
START SW.
FOR. SW.
REV.
SW.
P10
P18
PY7
PY12
PY10
PY11
SP
P1
P5
P4
P2
F
U
7
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