C175 Tier 4 Final Engines for Off-Highway Trucks Caterpillar

The Electronic Control Module (ECM) monitors the operating parameters of the engine. The ECM will generate an event code if a specific engine parameter exceeds an acceptable range that is defined by the engine monitoring system. For information on event codes, refer to Troubleshooting, "Event Codes" for a list of the applicable event codes for this application.

Three possible responses may be available for each parameter. Some of the responses are not available for some of the parameters. Refer to Table 1.

Table 1

Indicators (1), (2), and (3)
Warning Category Indicator	Severity
(1)	Least Severe
(2)	Moderate Severity
(3)	Most Severe

Use Cat^® Electronic Technician (ET) to perform the following activities for the monitoring system:

• Viewing parameters

• Parameter programming

• Set delay times

The default settings for the parameters are programmed at the factory. To accommodate unique applications and sites, some of the parameters may be reprogrammed with Cat ET. Use Cat ET to modify the monitoring system parameters.

Note: Some parameters require no password to be changed. Other parameters can be changed with customer passwords. Some of the parameters are protected by factory passwords. There are some parameters that cannot be changed. Some applications do not allow any changes to the programmable monitoring system. Parameters that are protected by factory passwords can only be changed by dealer personnel.