Tattletale Mode(Mode 3) Tattletale Mode or Mode 3 is a management and maintenance tool, useful for tracking engine history The Main Display Module records the extreme value for each engine condition that is monitored. The values come from the sensor inputs and from the Engine Control Module(ECM) via the CAT data link. Tattletale values are updated whenever a value occurs which is more extreme than the previous recorded value. These values are ignored for a short period of time after each engine start-up. This allows the engine systems to stabilize before the old values can be updated with new values,
To enter Mode 3, hold the CLEAR/MODE switch down until"-3-" appears on the LCD
All of the gauges display the highest value or lowest value that the corresponding engine subsystem has attained. The highest reading is for values that abnormally increase and the lowest reading is for values that abnormally decrease
To more accurately display the information that is shown on the gauges, use the SCROLL switch to advance the LCD to the first tattletale value. The LCD will momentarily show the system identifier"-GA-X and then switch to the tattletale value
Press the SCROLL switch again for each succeeding tattletale value. The only system identifiers displayed will be for the Gauge Cluster modules that are present