DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL
Page
40
January 1999
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-76
Capacitor (1C) voltage too high.
This status code will be displayed when the voltage
on the capacitor goes above limit voltage* 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
•
=
Unplugging the battery connector during
regenerative braking.
•
=
Line contactor bouncing open during regen.
•
=
Main power fuse opening during regen.
•
=
Intermittent battery plug connection.
* Limit Voltage:
Limit Battery Voltage
50V 36V
70V 48V
96V 72//80V
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 P22
P10
P13
S
E
R
IA
L
RE
CE
IV
E
SER
IAL T
R
AN
SM
IT
B
D
I IN
T
E
R
R
U
P
T
P14 P15
I-
MO
TO
R O
U
TP
UT
BR
AKESW
.
STEER PUMP
FIELD
STEER PUMP
ARM
P11 P18
1A OR
SP D
V
R
PLU
G
/R
GN
OU
T
P
U
T
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
-77
Motor current is detected during
regenerative braking.
This status code will be displayed when motoring
current is detected 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
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 P22
P10
P13
S
E
R
IA
L
RE
CE
IV
E
SER
IA
L T
R
AN
SM
IT
B
D
I I
N
TE
RRUP
T
P14 P15
I-
MO
TO
R O
U
TP
UT
BR
AKESW
.
STEER PUMP
FIELD
STEER PUMP
ARM
P11 P18
1A OR
SP D
V
R
PLU
G
/R
GN
OU
T
P
U
T
LEFT
CONTROL
(MASTER)
TO PUMP
CONTROL
POSITIVE
TO PUMP CONTROL POSITIVE
LINE
SPEED LIMIT SWITCH
FU3
KEY SWITCH
BRAKE SW.