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DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL Page 40
January 2000
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
KEY SWITCH
L
P7
P1
P17
P2
P6
P9
P3
P12 P8
P4
P5
SEAT SW.
START SW.
FOR. SW.
REV.
SW.
P10
P18
PY7
PY12
PY10
PY11
SP
P1
P5
P4
P2
F
U
7
TO
ACCESSORIES
FU6
P3
OSCILLATOR CARD
LEFT CONTROL
FU1
STEER
ANGLE
POT
LINE
POWER
CONNECTIONS
LEFT CONTROL
POS
A1 F1
NEG A2
F2
FIELD
ARMATURE
ACC POT
BDI INTERRUPT
+
-
SP
SP
FU4
A1
FU2
P
P
POWER
CONNECTIONS
RIGHT CONTROL
POS A1 F1
NEG
F2
FIELD
ARMATURE
FU5
BRAKE SW.
A2
TRACTION
STATUS CODE
DESCRIPTION OF STATUS CAUSE OF STATUS INDICATION
-82
When armature motor current is greater
than 400 amps for more than 3.5 sec the
armature motor current will be turned off.
This status code will be displayed when the armature motor
current exceeds 400 amps for 3.5 sec and the accelerator
pedal is calling for maximum performance.
MEMORY RECALL
NO
CORRECTIVE ACTIONS TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
The Control will not operate, and can only
be reset by cycling the key switch.
POSSIBLE CAUSE:
•= Continued operation of vehicle in high
motor current condition
•= Operating control at stall motor current
for more than 3.5 seconds.
•= Function 16 is incorrectly adjusted for
control % on time.
- Adjust function per OEM
instructions
KEY SWITCH
L
P7
P1
P17
P2
P6
P9
P3
P12 P8
P4
P5
SEAT SW.
START SW.
FOR. SW.
REV.
SW.
P10
P18
PY7
PY12
PY10
PY11
SP
P1
P5
P4
P2
F
U
7
TO
ACCESSORIES
FU6
P3
OSCILLATOR CARD
LEFT CONTROL
FU1
STEER
ANGLE
POT
LINE
POWER
CONNECTIONS
LEFT CONTROL
POS
A1 F1
NEG A2
F2
FIELD
ARMATURE
ACC POT
BDI INTERRUPT
+
-
SP
SP
FU4
A1
FU2
P
P
POWER
CONNECTIONS
RIGHT CONTROL
POS A1 F1
NEG
F2
FIELD
ARMATURE
FU5
BRAKE SW.
A2