DIAGNOSTIC STATUS CODES
TRANSISTOR PUMP CONTROL
Page 42
October 1998
PUMP
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-124
T2 voltage is low. (Less than 88%
of battery voltage.)
This status code is displayed when T2 voltage is less
than 88% of battery volts and the Pump driver is
energized.
MEMORY RECALL
NO
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Pump
Controller
SYMPTOM:
Control does not operate. Status
code may alternate between code
123 and code 124. Complete checks
for 124, if the problem is not found,
perform code 123 check
.
POSSIBLE CAUSE:
Defective Pump contactor.
•
=
Pump power tips fail to close
because:
- Welded normally closed power
tips.
- Binding contactor tip assembly.
- Defective Pump contactor coil.
(See status code 123)
Open motor circuit
•
=
Check for open circuit or loose
connection in pump motor circuit
from the A1 connection to the A2
connection on the control panel.
Defective 1A contactor.
•
=
Perform checks as outlined in
status 123.
P1
P2
P10
P6
P5
P16
94 INPUT
94 INPUT
90 INPUT
P13
P11
91 INPUT
BRUSHWEAR OUTPUT - PY9
P14
OVER TEMP OUTPUT - PY8
P15
92 INPUT
P12
P9
95 INPUT
P8
95 INPUT
LINE
P19
P20
P21
P4
P3
93 INPUT
93 INPUT
TO TRACTION
CARD
SPEED LIMIT 1
SPEED LIMIT 2
SPEED LIMIT 3
SPEED LIMIT 4
TO
TRACTION
P10 - BDI
PY7
PY12
PY10
PY11
SERI
A
L RECEI
V
E
SERIAL TRANSMIT
+5V FROM
TRACTION PY10
P17
P18
ACC POT
POWER CONNECTIONS
POS
A1
NEG
FIELD
ARMATURE
FU1
+
-
FU5
KEY SWITCH
FU6
L
1A
A2
1A
PUMP
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-127
Logic card power supply is less than
10 VDC.
This status code is displayed when the logic card
power supply is less than 10 volts.
MEMORY RECALL
YES
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Pump
Controller
SYMPTOM:
Pump contactor opens and
closes, then can only be
closed by opening and
closing the key switch.
POSSIBLE CAUSE:
Discharged battery
•
=
Check battery to insure
proper state of charge.
Loose connection at P1.
•
=
Insure that the wire
connection at PB1 is
tight.
Defective controller.
•
=
Replace control.
P1
P2
P10
P6
P5
P16
94 INPUT
94 INPUT
90 INPUT
P13
P11
91 INPUT
BRUSHWEAR OUTPUT - PY9
P14
OVER TEMP OUTPUT - PY8
P15
92 INPUT
P12
P9
95 INPUT
P8
95 INPUT
LINE
P19
P20
P21
P4
P3
93 INPUT
93 INPUT
TO TRACTION
CARD
SPEED LIMIT 1
SPEED LIMIT 2
SPEED LIMIT 3
SPEED LIMIT 4
TO
TRACTION
P10 - BDI
PY7
PY12
PY10
PY11
SERI
A
L RECEI
V
E
SERIAL TRANSMIT
+5V FROM
TRACTION PY10
P17
P18
ACC POT
POWER CONNECTIONS
POS
A1
NEG
FIELD
ARMATURE
FU1
+
-
FU5
KEY SWITCH
FU6
L
1A
A2
1A
