DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL
Page
25
July 2002
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-46
“Look Ahead” test for A2 volts is less
than 12.5% of battery volts.
This status code will be displayed when the voltage at
A2 is less than 12.5% of battery volts and I
m
is greater
than 52 amps, when the control is in the neutral state,
with no start switch selected.
MEMORY RECALL
YES
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Line contactor will not pickup.
POSSIBLE CAUSE
Check for short circuit from the motor
armature to the frame of the vehicle.
Defective control.
•
=
Replace controller unit.
POWER CONNECTIONS
TO CONTROL
POS
A1
F1
NEG
A2
F2
FI
E
L
D
AR
M
A
T
U
R
E
A1
A2
A1
A2
F2
F1
BA
T
T
+
-
FU1 *
LINE *
400A
FU3 *
10A
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 less than 1.3 amps and
armature current is greater than 100 amps for more
than 1.27 seconds during the run mode.
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.
NO GRAPHIC FOR THIS
STATUS CODE
