3508B Engine for 854G Wheel Dozers and 992G Wheel Loaders Caterpillar

Use this section for the troubleshooting of problems that have generated event codes but do not have active diagnostic codes. When the event code is generated, the event is active. Any generated code becomes logged in the permanent memory of the Electronic Control Module (ECM).

Event codes alert the operator that an abnormal engine operating condition such as low oil pressure or high coolant temperature has been detected. Events do not indicate problems with the electronic system. Event codes also indicate the nature of the problem. Event codes may be viewed on a personal computer that has the software for the Caterpillar Electronic Technician (ET).

Illustration 1	g00740986

Illustration 1 indicates output voltage from the Coolant Temperature Sensor. The Cat ET can be used to turn these features ON and OFF. When the features are turned ON, the display will appear on an electronic monitoring module and an event will also be logged in the ECM. When the features are turned OFF, the display will not appear on a monitoring module, but an Event will still be logged.

Table 1

3500B System Event Codes
Event Code	Description
E017	High Engine Coolant Temperature Warning
E035	Loss of Coolant Flow Warning
E094	Axle Protection Derate
E100	Low Engine Oil Pressure Warning