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When PathPilot identifies those commands it causes a component on the control board to power, or remove power, to the coolant pump.
Tools
Digital multimeter
Screw Driver
Box Wrench or Crescent Wrench
Reseat the
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Coolant Pump Power Cord
Reason: The coolant pump isn't plugged in to an outlet.
Unplug and reseat the coolant pump power cord.
Inspect the
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Coolant Pump Strapping
Reason: The coolant pump isn't strapped for your machine power.
Open the box on the side of your pump. Check the strapping compared to the diagram on your pump.
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Inspect
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Fuse F1 on the
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ECM Board
Reason: Fuse F1 on the machine control board is blown.
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| Info |
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If the coolant pump shorts, the 3 A, slow-blow, F1 flood coolant fuse on the ECM1 control board blows before CB3 trips. |
Inspect the
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Coolant Pump
Reason: The coolant pump is damaged.
Unplug the coolant pump power cord from the machine and examine it for damage.
Test the coolant pump by:
If possible, plug it into a known good outlet to see if it turns on.
Use a digital multimeter to verify the motor’s resistances from winding-to-winding and winding-to-ground. If any winding-to-winding resistance measurement is a short (near zero resistance), an open circuit, or if the winding-to-ground resistance is a short, the coolant pump must be replaced.
Inspect the
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ECM Board
Reason: The coolant control relay on the machine control board failed.
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