DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL Page 28
April 2002
TRACTION
STATUS CODE
DESCRIPTION OF STATUS CAUSE OF STATUS INDICATION
-90
Motor thermostat is open during control
operation.
This status code will be displayed when the voltage at
P21<5.66V for at least 30 seconds.
MEMORY RECALL
YES
CORRECTIVE ACTIONS TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Maximum motor armature current will be
limited to 100 amps, and vehicle
performance will be sluggish.
POSSIBLE CAUSE
Thermostat wire has been lost.
•= Verify thermostat connections inside
motor.
Verify connection at P21.
L
TURF SPEED LIMIT SWITCH *
KEY SWITCH *
START SWITCH *
DIRECTIONAL
SWITCH *
FORWARD
REVERSE
N.C. MOTOR
THERMOSTAT
*
BUZZER *
AUX ACCEL POT *
ACCEL POT *
P1 P2 P3 P4 P5 P21 P11 P10
P15
TACHOMETER *
P14
+12V
P16 P7 P9 P13 P8 P6
RED
GREEN
BLACK
PLUG (23 PIN)
*
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