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GE SX TRANSISTOR CONTROL IC3645SR4U404N2 Installation And Operation Manual Page 50

Sx transistor control separately excited (sx) transistorized dual motor traction control and series pump control.
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DIAGNOSTIC STATUS CODES
TRANSISTOR PUMP CONTROL
PUMP
DESCRIPTION OF STATUS
STATUS CODE
"Look Ahead" test for T2 volts
-146
less than 12% of battery volts.
MEMORY RECALL
CORRECTIVE ACTIONS
YES
SYMPTOM
Circuits valid
Pump control will not operate.
for
Pump
POSSIBLE CAUSE
Controller
Check for short circuit from the
motor armature to the frame of
the vehicle.
Control is defective.
=Replace controller unit.
PUMP
DESCRIPTION OF STATUS
STATUS
CODE
Capacitor volts are low after the line
-150
contactor closes.
MEMORY
CORRECTIVE ACTIONS
RECALL
YES
SYMPTOM
Pump control will not operate.
Circuits
valid for
POSSIBLE CAUSE
Pump
Defective line contactor.
=
Check for open line contactor power
Controller
tips.
Check for loose or open connections in
cables from battery positive to control
positive circuit.
Defective power fuse.
=
Check power fuse for open circuit.
No battery voltage at P1.
=
Check for battery voltage at POS and
P1.
=
Check for loose connection at P1.
CAUSE OF STATUS INDICATION
This status code will be displayed when the voltage at T2 is
less than 12% of battery volts.
TROUBLE-SHOOTING DIAGRAM
FU3
KEY SWITCH
FU6
P1 P2
FU1
LINE
+
POS
POWER
-
CONNECTIONS
NEG
CAUSE OF STATUS INDICATION
This status code will be displayed when the capacitor voltage
is less than 85%of the battery voltage in the run mode.
TROUBLE-SHOOTING DIAGRAM
FU3
KEY SWITCH
FU6
FU1
LINE
+
POS
POWER
-
CONNECTIONS
NEG
TO TRACTION
P10 - BDI
P3
P21
A1
TO
TRACTION
A2
CARD
TO TRACTION
P10 - BDI
P1 P2
P3
A1
TO
TRACTION
A2
CARD
Page 50
PY7
PY12
P19
P12
PY10
PY11
PY7
PY12
P21
P19
P12
PY10
PY11
January 2000

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