0381582 JOHNSON END HEAD,Drive

Table 1
Event Code
Description Default Conditions which Generate this Code System Response
E1063 (1) High Water Pump Control Module Temperature The temperature of the Electric Water Pump Control (EWPC) is above 80° C (176° F). The code is logged.
The speed of the Electric Water Pump (EWP) will be derated.
E1063 (3) High Water Pump Control Module Temperature The temperature of the EWPC is above 100° C (212° F). The code is logged.
The EWP will be shut down. The machine will need to be shutdown. Probable Causes
High ambient air temperature
Insufficient flow of air
The Power Train Electric Drive System and the Accessory Power System will contain hazardous voltage levels during machine operation and for a period of time after machine shutdown.Do not remove any covers that will expose energized electrical components while the engine is operating. Do not remove any covers that will expose the energized electrical components while the components remain energized following an engine shutdown.Do not perform any type of electrical maintenance on the orange hazardous voltage conductors, the power train components or the accessory power system components while the engine is operating.Do not perform any type of electrical maintenance on the orange hazardous voltage conductors, the power train components or the accessory power system components while the components remain energized following an engine shutdown.Always perform the safe shutdown and de-energizing procedure before performing electrical service on the Power Train Electric Drive System or the Accessory Power System.Failure to follow these instructions could result in personal injury or death.
In order to avoid the build up of hazardous live voltages on the exposed surfaces, all grounding wires must be properly connected at all times during engine operation.Any disconnected grounding wires (including the grounding bond wires, the conductor shield wires, the power inverter grounding straps and the component housing grounding straps) must be properly reconnected before the engine is started.Failure to follow these instructions could result in personal injury or death.
Note: Always perform the procedure for safe shutdown and de-energizing before performing electrical service on the Power Train Electric Drive System or the Accessory Power System. This procedure must be performed in order to verify that the voltage in the power train electrical system has been discharged to less than 50.0 VDC. Refer to the Specifications, Systems Operation, Troubleshooting, Testing and Adjusting, "Electrical Maintenance Guidlines" for the proper procedure.Note: A multimeter must be used to verify that there is little or no voltage present at the exposed conductors before any other action is taken. The voltage must be manually measured in order to confirme it to be at a low level (50.0 VDC or less).Recommended Actions
High Air Temperature
Determine if the air temperature in the engine compartment is excessive. Determine the cause of the high air temperature. Make corrections, when possible. Verify that the problem is resolved.Insufficient Flow of Air
Illustration 1 g02023914
EWPC is mounted at the rear of the engine on the upper right side of the engine compartment.
(1) Cooling fins
Check the cooling fins for the control module for dirt and/or debris. Remove any dirt and/or debris.
Check the control module and the surrounding area for dirt and/or debris. Remove any dirt and/or debris. Verify that the problem is resolved. If the problem is not resolved, contact the Caterpillar Dealer Services Network (DSN).