DIAGNOSTIC STATUS CODES
TRANSISTOR PUMP CONTROL Page 50
Revised May 2003
PUMP
STATUS CODE
DESCRIPTION OF STATUS CAUSE OF STATUS INDICATION
-146
“Look Ahead” test for A2 volts less
than 12% of battery volts.
This status code will be displayed when the voltage at
A2 is less than 12% of battery volts.
MEMORY RECALL
YES
CORRECTIVE ACTIONS TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Pump
Controller
SYMPTOM
Pump control will not operate.
POSSIBLE CAUSE
Check for short circuit from the motor
armature to the frame of the vehicle.
Control is defective.
· Replace controller unit.
PUMP CONTROL
PLUG PL-2
P2
P1
P18
P12
P19
P20
P21
PUMP CONTROL TEMP
P7
L
P17
ACCEL POT INPUT
*
*
*
SPEED 2
SPEED 1
*
SPEED 3
*
SPEED 4
POWER CONNECTION
SUPPLIED BY CUSTOMER
*
KEY SW.
BATT (+)
P
*
FU4
FU2
LINE
CONTACTOR
*
*
ARMATURE
*
FIELD
*
PUMP CONTROL
POWER CONNECTION
A1
A2
A1
A2
A2
A1
P
N
N
BATT (-)
PUMP
STATUS CODE
DESCRIPTION OF STATUS CAUSE OF STATUS INDICATION
-148
“Look Ahead” test for A2 volts greater
than 88% of battery volts.
This status code will be displayed when the voltage at
A2 is greater than 88% of battery volts.
MEMORY RECALL
YES
CORRECTIVE ACTIONS TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Pump
Controller
SYMPTOM
Pump line contactor will not pick up.
POSSIBLE CAUSE
Defective pump contactor.
· Check for welded pump contactor power
tips.
· Check for sluggish operation of pump
contactor.
PUMP CONTROL
PLUG PL-2
P2
P1
P18
P12
P19
P20
P21
PUMP CONTROL TEMP
P7
L
P17
ACCEL POT INPUT
*
*
*
SPEED 2
SPEED 1
*
SPEED 3
*
SPEED 4
POWER CONNECTION
SUPPLIED BY CUSTOMER
*
KEY SW.
BATT (+)
P
*
FU4
FU2
LINE
CONTACTOR
*
*
ARMATURE
*
FIELD
*
PUMP CONTROL
POWER CONNECTION
A1
A2
A1
A2
A2
A1
P
N
N
BATT (-)