5-52 LeeBoy 8515E Conveyor Paver
Maintenance
7. Reinstall connector on to the PV480 panel, making
sure the connector shell locks into its mate on the
display panel.
Check ECU Powering UpCheck ECU Powering Up
Each engine has a power distribution block (PDB) on
the main engine harness that provides power to the ECU
through the ECU control relay; main relay; and fuses in
Positions 1, 2, 3, 4 and 8. (Figure 5-68)
To check the ECU powering up:
1. Locate the PDB on the right side of the paver inside
the engine access door.
2. Fuses can be checked by removing the fuse and
using a continuity tester OR checking for +12VDC on
each pin on the back of the fuse.
3. Conrm operation of ECU and main relays:
• If the ECU relay is not energizing, starter will not
operate.
• If the main relay is not energizing, the fuel pump
will not operate.
If none of these procedures correct the problem,
contact your authorized LeeBoy dealer for assistance.
1
2
3
4
8
Figure 5-68. Power Distribution Box (PDB)
PV480 TroubleshootingPV480 Troubleshooting
Under certain conditions, the PV480 digital display can
become inoperable. If the display screen is completely
black, it must be replaced. If the gauges on the
screen become gray, the display panel is not receiving
communication over the CANbus. If this occurs, check
the connector. If the gauges are still gray, check the
ECU powering up.
Check PV480 ConnectorCheck PV480 Connector
1. Ensure the ignition switch is in the OFF position
before starting the machine.
2. Remove the main connector from the rear of the
PV480 digital display controller.
3. Inspect the terminals in positions 14 (green) and 26
(yellow) for the CANbus communication.
4. If terminals are properly seated, carefully “unlock”
the red retaining clip and slide away from the wires.
(Figure 5-66)
Clip
Figure 5-66. PV480 Main Connector
5. Ensure all the other terminals are locked into the
connector shell.
6. Push the red retaining clip back into the locked
position and ensure terminals are ush with the red
retaining clip. (Figure 5-67)
Figure 5-67. Terminal Seat
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