DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL Page 38
October 2002
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 recycling the key
switch.
POSSIBLE CAUSE
Defective control.
· Replace controller unit
FU3
KEY SWITCH
P7
P1 P2P17 P6 P3 P4
START SW.
FORWARD SW.
ACC POT
L
REVERSE SW.
SEAT SW.
P5
P9
FU5
NEG
POWER CONNECTIONS
POS A1 F1
NEG A2 F2
FIELD
ARMATURE
+
-
LINE
FU1
TRACTION
STATUS CODE
DESCRIPTION OF STATUS CAUSE OF STATUS INDICATION
-82
If the armature motor current is greater
than 450 amps for longer than 3.5 sec
the armature motoring current will be
turned off.
This status code will be displayed when the armature
motor current exceeds 450 amps for 3.5 sec and the
accelerator pedal is calling for maximum
performance.
MEMORY R CALL E
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
accelerator.
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
THE PRESENCE OF THIS STATUS CODE
IS NOT NECESSARILY INDICATIVE OF A
CONTROL ISSUE. IF FUNCTION 16 IS
NOT MIS-ADJUSTED, THE STATUS
CODE INDICATES AN APPLICATION
ISSUE WHERE A MOTOR IS BEING
STALLED, ETC. DISPLAY OF THIS
STATUS CODE SHOULD NOT TRIGGER
THE RETURN OF A CONTROL FOR
REPAIR OR REPLACEMENT.
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