DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL
Page
37
October 2002
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 RE ALL
C
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.
·
Missing or damaged horn suppressor.
* Limit Voltage:
Limit Batt.
50V 36V
70V 48V
96V 72/80V
FU3
FU5
KEY SWITCH
*
CONTROL
POWER
CONNECTION
POS
A1
NEG A2
ARMATURE
FU1
LINE
A2
A1
*
*
1A
*
OSC CARD CONNECTIONS
L
1A
DIRECT SW.
P18 P17
P2
P6
P4
SEAT SW
.
*
SP
P3
*
FWD
REV
P5
*
ACCEL
START
SW.
P1 P7
P9
*
F1
F2
FI
ELD
F1
F2
ACCEL
START
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 RE ALL
C
YES
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Line contactor closes then opens and
can only close by opening and closing
the key switch.
POSSIBLE CAUSE
Defective control.
·
Replace controller unit
FU3
FU5
KEY SWITCH
*
CONTROL
POWER
CONNECTION
POS
A1
NEG A2
ARMATURE
FU1
LINE
A2
A1
*
*
1A
*
OSC CARD CONNECTIONS
L
1A
DIRECT SW.
P18 P17
P2
P6
P4
SEAT SW
.
*
SP
P3
*
FWD
REV
P5
*
ACCEL
START
SW.
P1 P7
P9
*
F1
F2
FI
ELD
F1
F2
ACCEL
START
SW.
+
-
