Fuel System 132 Diesel Control System
Electric VGT Control Actuator
Function And Operation Principle
The Electric VGT Control Actuator is installed on the turbocharger. It operates the vain in the Variable
Geometry Turbocharger (VGT) and regulates the compressed air amount by the ECM's PWM signal. This
valve consists of a DC motor which actuates the vane, a 2-step gear which increases torque of the DC motor, a
position sensor which detects status of the vane, an electric control unit which drives the DC motor, and a
reset spring which resets the de-energized vane to its open position.
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CAUTION
After replacing the Electric VGT Control Actuator, MUST perform the "COMPONENT CHANGE
ROUTINE" procedure (Refer to "REPLACEMENT" procedure). Otherwise trouble related with engine
performance or emission control may occur until ECM learning about the component is over.
Summary of Contents for S220P
Page 3: ...Engine Mechanical System 2 General Information General Information Specifications ...
Page 4: ...Engine Mechanical System 3 General Information Specifications ...
Page 5: ...Engine Mechanical System 4 General Information Specifications ...
Page 10: ...Engine Mechanical System 9 Cooling System Special Service Tools ...
Page 11: ...Engine Mechanical System 10 Cooling System Special Service Tools ...
Page 18: ...Engine Mechanical System 17 Cooling System ...
Page 19: ...Engine Mechanical System 18 Cooling System Thermostat ...
Page 55: ...Engine Mechanical System 54 Lubrication System ...
Page 73: ...Engine Electrical System 72 General Information Troubleshooting Charging system ...
Page 74: ...Engine Electrical System 73 General Information Starting system Special service tools ...
Page 75: ...Engine Electrical System 74 Charging System Charging system Alternator ...
Page 80: ...Engine Electrical System 79 Starting System Components ...
Page 91: ...Fuel System 90 General Information Special Service Tools ...
Page 112: ...Fuel System 111 Diesel Control System EOI Engine Operating Indicator System Circuit Diagram 1 ...
Page 117: ...Fuel System 116 Diesel Control System Specification Circuit Diagram ...