DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL
Page
30
May 2000
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-81
The input from the tach sensor has
been lost or the motor has stalled.
This status code will be displayed when the control is
not seeing any tach pulses.
MEMORY RE ALL
C
YES
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Control will not operate.
POSSIBLE CAUSE
Bad tachometer
·
Replace tachometer
Lost wire from tachometer.
·
Verify tach connections.
Motor has stalled.
Defective control.
·
Replace controller unit
KEY SWITCH
L
P1
P17 P2 P6
FOOT SW.
P18
1A OR
SP DVR
LEFT CONTROL (MASTER)
P12
LEFT TURN SW.
B
P10
3
1
2
FU3
DRIVER
BLOCK
FU1
LINE
+
12V
P21
P11
RIGHT
CONTROL
(SLAVE)
POWER CONNECTIONS
LEFT CONTROL
POS
A1
F1
NEG
A2
F2
FIELD
ARMATURE
+
-
-
48V