Data from a gas analysis and data on engine performance are required in order to determine the correct settings for the ignition timing and the exhaust emissions. Incorrect programming of parameters may lead to complaints about performance and/or to engine damage.
Programmable parameters can be classified into the following types: engine identification, timing control, air/fuel ratio control, speed control and start/stop control.
If an Electronic Control Module (ECM) is replaced, the appropriate parameters must be copied from the old ECM. This can be done with the "Copy Configuration" feature of the Caterpillar Electronic Technician (ET). Alternatively, the settings can be recorded on paper and then programmed into the new module.
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Changing the parameters during engine operation can cause the engine to operate erratically. This can cause engine damage. Unless you are otherwise instructed, only change the settings of the parameters when the engine is STOPPED. |