BATTERY REPLACEMENT PROCEDURE ERROR CODE, F-09, DISPLAYED 4. Remove the electrical connector. Remove the screws on the top surface and the rear face. Remove the cover (Figure 20-8). This will expose the battery, its wires, and the connector. Replacing the Battery The payload meter has an internal battery used to protect the memory from being erased when the key switch is turned to the OFF position. Battery life is approximately 2 years. The capacity of the battery is monitored by the payload meter. When the voltage of the memory battery drops, error code, F-09, will be displayed. When the F-09 error code appears, download the data within 48 hours; otherwise, the data may be lost.
The haul cycle data may not be recorded properly while F-09 is displayed. At this time it will be necessary to replace the battery. This should be performed when the truck is in an unloaded condition. The data stored in the payload meter should be downloaded to a personal computer or carry out the memory card dump operation. If this is not done, when the battery is disconnected all data will be lost. FIGURE 20-8. ACCESS TO BATTERY 5. Grasp the wires coming from the battery and pull outward. By pulling perpendicular from the board, it will disconnect the connector from the board and pull the battery out of its holder simultane- ously (Figure 20-9).
All that is required is a phillips-head screwdriver and a new battery (P/N 581-820-55710) 1. With the keyswitch in the ON position, download the data stored in the payload memory, or perform the memory card dump operation. 2. Turn the keyswitch to the OFF position. 3. Remove the four mounting screws holding the payload meter in position and then pull the pay- load meter out, away from the instrument panel (Figure 20-7). NOTICE - Use care not to let dirt, metal or spare parts to drop inside the controller at any time . FIGURE 20-9. BATTERY INSTALLATION 6. Insert the connector of the new battery directly into the connector on the board (Figure 20-10).
Place the battery in the battery holder, and pass the wiring through the notch. When doing this, insert the wiring into the bottom of the holder and pass it through the notch. 7. Install the controller cover, replace the electrical connector, and install the payload meter control- ler back into the instrument panel. FIGURE 20-7. REMOVING PAYLOAD METER M20-28 Payload Meter II M20007.1 03/02