DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL
Page
27
July 2001
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-76
Capacitor (1C) voltage too high during
regenerative braking.
This status code will be displayed when the voltage at
1C exceeds 96 volts during the regenerative braking
cycle.
MEMORY RECALL
YES
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Line contactor opens and closes, then
opens and can only close by opening and
closing the key switch.
POSSIBLE CAUSE
Defective control.
•
=
Replace controller unit.
POWER CONNECTIONS
TO CONTROL
POS
A1
F1
NEG
A2
F2
FI
E
L
D
A
R
MA
T
URE
A1
A2
A1
A2
F2
F1
BA
T
T
+
-
FU1 *
LINE *
400A
FU3 *
10A
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-90
Motor thermostat is open during control
operation.
This status code will be displayed when the voltage at
P21<5.66V for at least 30 seconds.
MEMORY RECALL
YES
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Maximum motor armature current will be
limited to 100 amps, and vehicle
performance will be sluggish.
POSSIBLE CAUSE
Thermostat wire has been lost.
•
=
Verify thermostat connections inside
motor.
Verify connection at P21.
L
T
U
R
F
SP
EED
L
IMI
T
SWI
T
C
H
*
KEY SWITCH *
S
T
AR
T
SW
IT
C
H
*
DIRECTIONAL
SWITCH *
FO
R
W
A
R
D
R
EVER
SE
N.
C
. M
O
T
O
R
T
H
ER
M
O
ST
A
T
*
BU
Z
Z
ER
*
AU
X
AC
C
E
L
P
O
T
*
AC
C
E
L
P
O
T
*
P1
P2
P3
P4
P5
P21 P11 P10
P15
T
A
C
H
O
M
ET
ER
*
P14
+12V
P16
P7
P9
P13 P8
P6
RE
D
GR
E
E
N
BL
AC
K
PLUG (23 PIN)
*
