FORK-BLOCK 3019752 - Caterpillar

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Troubleshooting flowchart for the "RAISE VALVE SHORTED LO" fault message"FAULT: LOWER VALVE SHORTED HI"
The fault occurs in both "auto" mode and "manual"mode, but the fault only occurs when the valve is not driven by the controller.Note: This fault is usually caused by a short between the wire harness and the positive terminal of the battery. This is generally accompanied by the fact that the raise valve goes to full on position.
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Troubleshooting flowchart for the "LOWER VALVE SHORTED HI" fault message"FAULT: LOWER VALVE SHORTED LO"
The fault occurs in both "auto" mode and "manual" mode, but the fault only occurs when the controller drives the valves.Note: This fault is usually caused by a short between the wire harness and the ground. This is generally accompanied by the fact that the raise valve will not function.
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Troubleshooting flowchart for the "LOWER VALVE SHORTED LO" fault message"FAULT: BATTERY LOW"
Note: This problem is caused by a low supply voltage from the battery. Low supply voltage occurs when the voltage drops below 16.5 Volts of direct current. The problem is normally due to a fault in the machine's charging system.
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Troubleshooting flowchart for the "BATTERY LOW" fault message"FAULT : BATTERY HIGH"
Note: This problem is caused by a high supply voltage from the battery. High supply voltage occurs when the voltage rises above 32 Volts of direct current. This is normally due to a fault in the machine's charging system.
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Troubleshooting flowchart for the "BATTERY HIGH" fault message"FAULT: BATTERY VERY HIGH"
Note: This problem is caused by a very high supply voltage from the battery. A very high supply voltage occurs when the voltage rises above 35 Volts of direct current. This is normally due to a fault in the machine's charging system. This problem could lead to serious damage to the machine's components if the problem is not corrected promptly.
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Troubleshooting flowchart for the "BATTERY VERY HIGH" fault message"FAULT: ADDRESS"
Note: This fault occurs when the controllers can no longer communicate with each other due to a problem with the wiring, or a controller.
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Troubleshooting flowchart for the "ADDRESS" fault message"FAULT: DFLT CHECKSUM"
Note: This fault occurs when the controllers can no longer communicate with each other due to a problem with the software or the controller.
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Troubleshooting flowchart for the "DFLT CHECKSUM" fault messageAuto Grade Control System's Ladder Diagrams
First Ladder Diagram
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Second Ladder Diagram
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Third Ladder Diagram
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