COUPLER AR-QUICK 3727405 - Caterpillar

Functions of the Lamps
Shutdown Lamp
Lamp check - When the keyswitch is turned to ON, the lamp will come on for 2 seconds. The lamp will then go off unless there is an active warning.Flashing - The lamp will be flashing when a derate is active or when a derate is present because of an active diagnostic code. An example of an active diagnostic code is "System Voltage High".On - The lamp will be on when the shutdown level in the engine protection strategy has been reached. The "Warning" lamp will also be on.Warning Lamp
Lamp check - When the keyswitch is turned to ON, the lamp will come on for 2 seconds. The lamp will then go off unless there is an active warning.Flashing - The lamp will be flashing when a "warning" or a "warning and derate" is active. This includes low oil pressure.On - The lamp will be on when the shutdown level has been reached. The "Shutdown" lamp will also be on.Wait to Start Lamp
Lamp check - When the keyswitch is turned to ON, the lamp will come on for 2 seconds. The lamp will then go off unless "Wait to Start" is active.On - The lamp is on during a "Wait to Start" period.Low Oil Pressure
Lamp check - When the keyswitch is turned to ON, the lamp will come on for 2 seconds. The lamp will then go off unless there is an active warning.On - The lamp will come on when a low oil pressure event is detected. The "Warning" lamp and the "Shutdown" lamp may also come on.PTO Lamp
Lamp check - The lamp will come on for 2 seconds. The lamp will then go off unless the PTO mode is active.Flashing - When the keyswitch is turned to ON, the lamp will be flashing when the PTO mode is turned on but when the PTO is not engaged.On - The lamp will come on when PTO mode is engaged.Color of Lamps
Typically, the "Shutdown" lamp is colored red and the "Warning" lamp is colored amber. The other lamps are optional.Operation of the Indicator Lamps
Table 1
Warning Lamp
(Alert Lamp)     Shutdown Lamp
(Action Lamp)     Lamp State     Description of the Indication     Engine State