COVER AS-CYLINDER HEAD 3035781 - Caterpillar

Input/Output
Input/Output consists of the following items:
Cat data link
CAN data link
RS-232 data link
Serial peripheral interface data link (SPI data link)
Keypad data link Cat Data Link
The cat data link (connector contacts J1-6 and J1-7) provides a communication link with the other ECMs on the machine. The cat data link is bidirectional. The bidirectional functionality allows the input/output of data between ECMs. The cat data link permits the sharing of information such as engine oil pressure, machine codes, and diagnostics. CAN Data Link
The CAN data link is included in the harness for future use.RS-232 Data Link
The connector contacts J2-32, J2-33, J2-40 and J2-41 of the VIMS® ECM provide two RS-232 serial ports. The two serial ports allow the VIMS® ECM to communicate with the off-board systems. The RS-232 data links are bidirectional. The bidirectional function allows the VIMS® ECM to input information and output information. One port is used to communicate with an off-board service tool. The second port is used in order to broadcast data to off-board systems, as required.Serial Peripheral Interface Data Link (SPI Data Link)
The VIMS® ECM (Connector contacts J2-10, J2-20, J2-28 and J2-65) provides a serial port for the SPI data link. The VIMS® ECM uses the SPI data link to communicate with the display modules. Power for these modules (connector contact J2-65) is 12 v. The 6-pin connectors in the machine harness for any of the display modules can be interchanged with any other display module. This ability is especially helpful for troubleshooting. Keypad Data Link
The Keypad data link (contact J1-57) is used to provide a serial port for communicating keypad data to the VIMS® ECM.Inputs
The inputs include the following items:
Sensing input (System voltage)
Keypad Sensing Input (System Voltage)
The sensing input for system voltage (connector contact J1-1) tells the VIMS® ECM the voltage of the machine electrical system. Harness wiring connects the VIMS® circuit breaker to this input. The voltage helps determine the condition of the electrical system. This input is also the +battery supply for the VIMS® ECM. Keypad
The input for the keypad (connector contact J1-57) receives information from the keypad. Outputs
The outputs consist of the following items:
Service indicator lamp
Action lamp
Action alarm
Display power supplyService Indicator Lamp
When VIMS® detects an event, the VIMS® ECM activates the output of the service indicator lamp, and the service indicator lamp is turned on. The service indicator lamp remains on whenever the event is active. If an event could damage the machine, the service indicator lamp is flashed. The service indicator lamp can be turned off with the keypad. Events are not cleared from the memory of the VIMS® ECM when the service indicator lamp is turned off. If the event becomes inactive, the service indicator lamp is turned OFF. When power is applied to VIMS®, the memory of the VIMS® ECM is checked for any inactive events that have not been cleared. If any inactive events are found, the service indicator lamp is flashed three times. If no events are found, the service indicator lamp is flashed once as a