GASKET-COVER 8S1605 - Caterpillar

Illustration 1 g00596877
Schematic For An Unexpected ShutdownThe CID 330 alerts the operator that the GSC did not control the engine shutdown. The GSC normally controls all engine shutdowns. If an outside influence causes the engine to shut down, the GSC indicates a CID 330. There is only one failure mode for a CID 330 and the mode is FMI 7 (faulty mechanical response).The diagnostic code causes the following sequence of events:
On a running engine, the GSC detects that the engine speed has dropped from the rated speed to 0 rpm when the GSC has not called for a shutdown.
The GSC determines that no fault for the engine speed sensor is present that explains the drop in the speed signal.
The GSC indicates a CID 330 FMI 7 and the GSC disables the engine from running. Note: An unexpected shutdown fault will initiate a signal from the shunt trip circuit breaker. Note: Diagnostic codes are created when the harness connector (40 contact) is disconnected from the GSC during these troubleshooting procedures. Clear these created diagnostic codes after the particular fault is corrected. In a properly operating system, when the harness connector is removed from the GSC, the following diagnostic codes are recorded.
CID 100 FMI 3 pressure sensor (engine oil)
CID 110 FMI 3 temperature sensor (engine coolant)
CID 111 FMI 3 fluid level sensor (engine coolant)
CID 190 FMI 3 speed sensor (engine)
CID 331 FMI 2 switch (engine control)
CID 336 FMI 2 switch (engine control)ProcedureThe following condition is a possible cause of a CID 330 FMI 7:
A component that is not under the control of the GSC has caused an engine shutdown.The GSC treats this diagnostic code as a shutdown fault. Clear the diagnostic code from the fault log after troubleshooting is complete. Note: This procedure requires many voltage measurements during simulated engine cranking. The fuse for the starting motor "F4" on the relay module is removed in order to prevent the activation of the starting motor. Voltage measurements must be made quickly before the total cycle crank time (setpoint P17) elapses. The total cycle crank time has been defaulted to ninety seconds. See Systems Operation, "Engine/Generator Programming OP5". If a voltage measurement takes too long (more than 90 seconds), the GSC indicates an overcrank fault. The indicator for the overcrank shutdown will FLASH. In order to continue with a voltage measurement, the overcrank fault must be reset by turning the ECS to OFF/RESET. Then turn the ECS to START.
Perform an initial check. Before proceeding with the troubleshooting procedures, do the following steps:
Make sure that there are NO OTHER ACTIVE FAULTS. Erroneous troubleshooting and needless replacement of parts can be caused by a failure to check for other diagnostic codes. The operator will make many voltage measurements while the GSC is attempting to crank the engine. The GSC detects other diagnostic codes. If the GSC detects other diagnostic codes, the GSC will prevent the starting of the engine by sending a signal to the PEEC electronic control module. This signal will turn off the