TM2361 (24JUN08) 9010-05-18 450DLC Excavator Operation and Tests 062608 PN=266 Theory of Operation Quick On Start (QOS) System Operation 1 2 3 7 6 –UN–21DEC05 5 4 TX1001691 TX1001691 Quick On Start System Diagram 1—Key Switch (on) 4—Glow Plug Indicator Lamp 6—Engine Coolant 7—Glow Plug (6 used) 2—Battery 5—Engine Control Module Temperature Sensor 3—Glow Relay (ECM) The ECM determines the period required for glow engine coolant temperature sensor and changes the (pre-glow, glow, after-glow), and operates the glow period for glow so that the proper starting conditions relay and glow plug indicator lamp. The glow plug can be achieved all the time.
Also, after-glow function system allows easier cold weather starting and allows engine to stabilize idling immediately after reduces white smoke and noise at starting. When starting. turning the key switch to ON, the ECM detects the JC89288,0000042 –19–30JAN06–1/1 9010 05 18