DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL Page 37
January 1999
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.
POWER CONNECTIONS
LEFT CONTROL
POS A1 F1
NEG A2 F2
FIELD
ARMATURE
FU4
A1
A2
S1
S2
SP
+
-
FU1
POWER CONNECTIONS
RIGHT CONTROL
POS A1 F1
NEG A2 F2
FIELD
ARMATURE
L
P1 P17 P2 P6 P3 P4 P5
SEAT SW.
START SW.
FORWARD SW.
REVERSE
SW.
P23 P22P10 P13
SERIAL RECEIVE
SERIAL TRANSMIT
BDI INTERRUPT
P14 P15
I-MOTOR OUTPUT
BRAKESW.
STEER PUMP
FIELD
STEER PUMP
ARM
P11 P18
1A OR SP DVR
PLUG/RGN
OUTPUT
LEFT
CONTROL
(MASTER)
TO PUMP
CONTROL
POSITIVE
TO PUMP CONTROL POSITIVE
LINE
SPEED LIMIT SWITCH
FU3
KEY SWITCH
BRAKE SW.
TRACTION
STATUS CODE
DESCRIPTION OF STATUS CAUSE OF STATUS INDICATION
-52
Line contactor driver shorted on start
up.
This status code will be displayed when the control
detects a shorted line contactor driver during start up.
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
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