DIAGNOSTIC STATUS CODES
IT TRANSISTOR CONTROL
Page
30
April 2012
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 pre-charge.
POSSIBLE CAUSE
Defective control fuse.
Check control fuse for open circuit
condition. Replace fuse, if
necessary.
Turn key off and wait 1 minute,
then try again.
Defective control.
Replace controller unit.
POWER CONNECTIONS
TO CONTROL
POS
A1
F1
NEG
A2
F2
FIELD
A
R
M
A
T
URE
A1
A2
A1
A2
F2
F1
BA
TT
+
-
FU1 *
LINE *
400A
FU3 *
10A
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-57
Controller “motor current sensor” input
is too low during running.
This status code will be displayed when the voltage
input from the current sensor is too low (less than
1.0V, 416 amps) during running.
MEMORY RECALL
YES
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Control will not operate.
POSSIBLE CAUSE
Line contactor tips bounce or are not
fully picked up.
Blown power fuse.
Loose power connections between
battery and control.
Defective control.
Replace controller unit.
NO GRAPHIC FOR THIS STATUS CODE
