The control system must provide a Run/Stop switch or a key switch to control engine start and stop.
The Run/Stop switch must be independently controlled from the ECM power supply;
The engine stop is realized by the Open/Stop switch open circuit, and the ECM power supply can be removed/closed after 30s of shutdown.
After the Run/Stop switch is turned off, it still takes a little time to process the data and save it (similar to the computer shutdown process). If the ECM power is removed/closed prematurely, the fault codes SPN627 and FMI2 will appear.
ECM lines must be installed in accordance with the circuit diagram
Any device capable of generating an induced electromotive force must be installed with a back EMF suppression coil connected to the ECM;
All welding work must be carried out after all ECM connectors have been disconnected. Welding will damage the ECM.

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