DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL
Page
40
September 2004
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 Batt.
50V 36V
70V 48V
96V 72/80V
FU3
KEY SWITCH
P7
P1
P2
P17
P6
P3 P4
S
T
AR
T
SW.
F
O
RWARD
SW
.
ACC POT
L
R
E
V
E
RSE SW
.
S
EAT
SW
.
P5
P9
FU5
POWER CONNECTIONS
POS
A1
F1
NEG
A2
F2
FI
E
L
D
A
R
M
A
T
URE
+
-
LINE
FU1
P8
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
Truck will not operate.
POSSIBLE CAUSE
Defective control.
•
Replace controller unit
FU3
KEY SWITCH
P7
P1
P2
P17
P6
P3 P4
ST
ART SW.
FO
R
W
A
R
D
SW
.
ACC POT
L
REVERSE S
W
.
S
EAT
SW.
P5
P9
FU5
POWER CONNECTIONS
POS
A1
F1
NEG
A2
F2
FI
E
L
D
ARMAT
U
RE
+
-
LINE
FU1
P8