Usage:
771D (6JR),
775D (6KR) Quarry Trucks;
769D (5TR),
773D (7ER),
777D (3PR),
785B (6HK),
789B (7EK),
793B (1HL),
793C (4AR) Off-Highway Trucks
Reference: Service Manual Module, SENR6717-03, "Caterpillar Monitoring System".
The Caterpillar Monitoring System control box when used as a dashboard monitoring system or as a control for the Rear Axle Filtrations System can log diagnostic faults that are invalid and cannot be cleared with the SELECT and CLEAR switches. The most common of the logged faults is the code for a Cat-Link communication error, MID 030, CID 248, FMI 02. Other faults may also be present that indicate failures for components that are not even present on the machine.
Invalid fault codes can be cleared from the Caterpillar Monitoring System control box by performing a control initialization. An initialization of the Caterpillar Monitoring System control will clear all memory including the fault codes, totals, and hour meter readings. Therefore, totals and hour meter readings should be recorded before the initialization process is begun. Initialization of the Caterpillar Monitoring System control is performed by applying power to the control with the harness code plug or wires removed. Full details for initialize the control can be found on page 58 of SENR6717-03, "Caterpillar Monitoring System Service Manual." This procedure will work for both the dashboard displays and the Rear Axle Filtration Control. The dashboard display may contain either a harness code plug or a hard wired harness code while the Rear Axle Filtration System will always have a harness code plug. The initialization procedure listed above should be performed before replacing the Cat Monitoring System Control Module.
NOTE: Faults are invalid when they have an active status and no apparent problem can be found in the system or when faults refer to a component that is not part of the machine's systems.