This device can be programmed to enable the driver to reset all the trip information with the exception of the quick stop data.
What does ecm stand for code#
This diagnostic code event records oil pressure and temperature, coolant pressure and temperature and any faults in the electronic systems such as fuel injector faults, open circuits, etc.Ĭaterpillar calls their trip computer the “Cat Driver Information Display.” This unit is a sophisticated device that monitors such items as average fuel mileage, instant fuel mileage, trip time, trip distance and other information that can assist in accident reconstruction.
The ECM also logs a diagnostic code event at the time the quick stop event is recorded.
Any subsequent quick stop events will replace the oldest one that is stored. It will record the engine hours, engine rpm, throttle position, clutch switch position, brake switch position, cruise control status, and vehicle speed for 44 seconds before the event and 15 seconds after the event in one-second intervals. An internal battery backs up the RAM memory and the stored information will remain in the memory for seven to ten years. although Caterpillar recommends a setting of 7 mph/sec.Ī quick stop event will be recorded in the RAM memory of the ECM if the threshold setting is reached. The available settings are from 0 to 15 mph/sec. It can be set by the chassis builder, by the selling dealer, or occasionally, by the end user. The quick stop is set at a deceleration rate of 0 mph/sec./sec. The quick stop feature became available in November of 1995. The following is a brief overview of what information is available.Ĭaterpillar began installing electronic engine controls in 1993.Ĭaterpillar refers to a hard stop as a “quick stop” in their software. The information that can be retrieved from the engines electronic control module (ECM) varies from year to year and the manufacturer of the engine. These features began as simple trip recorders and evolved into the sophisticated systems that we have today. As the systems became more sophisticated, the engine manufacturers began adding features at the request of the equipment purchasers. The electronic engine controls were initially used to control the diesel fuel injection systems that were being installed to meet more stringent federal emission requirements. Click here for a PowerPoint presentation on Electronic Control Modules (ECM)īeginning in the early 1990’s, diesel truck engines were being equipped with electronic engine controls.
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