DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL Page 39
January 1999
TRACTION
STATUS CODE
DESCRIPTION OF STATUS CAUSE OF STATUS INDICATION
-67
FET armature protection has shut
down.
This status code will be displayed when the armature
transistor SAT drop is high or line tips are open.
MEMORY RECALL
YES
CORRECTIVE ACTIONS TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Control will not operate.
POSSIBLE CAUSE
•= Defective control.
Replace controller unit.
•= Line contactor tips welded open.
Replace line contactor.
•= Verify that there are no motor armature shorts.
•= Verify that there are no cable shorts between
the following points:
A1 and A2
B+ and A2
B- and A2
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
-68
The PMT enable signal from the
auxiliary (slave) control to the master
control drops below 5V
This status code will be displayed when the voltage at
master PL21 drops below 5V.
MEMORY RECALL
YES
CORRECTIVE
ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Control will not operate.
POSSIBLE CAUSE
•= Auxiliary control shut
down.
Check Auxiliary control
for stored faults.
•= Verify the connection
between the master
control P21 and the
auxiliary/slave control
P10.
P7 P8
P1 P17
P2 P6
P9
P3
P12
P8
P4 P5
P23
P22P10
P21P13
ACC POT
STEER
ANGLE POT
SERIAL RECEIVE
SERIAL TRANSMIT
BDI INTERRUPT
P14
BRAKE SW.
P11 P18
1A OR SP DVR
PLUG/RGN OUTPUT
P7 P12
P6P2P1 P3 P4 P5
LEFT
CONTROL
(MASTER)
RIGHT
CONTROL
(SLAVE/
AUXILIARY)
P10
P13
SPEED LIMIT SWITCH
P16 P15
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