Component Location
General Description

VGT(Variable Geometric Turbocharger) is the device which increases the efficiency of turbocharger at low rpm and lasts optimum turbo efficiency at high rpm as varying the cross sectional area through which exhaust gas passes turbocharger impeller. It relieves turbo lag at low speed and increse engine power genetation.

Engine speed, APS signal, MAFS and Boost pressure sensor information is inputted to ECM.

ECM actuates vacuum diafragm which controls exhaust gas line as controlling VGT Control solenoid valve duty to maintain optimum state of air compression.

DTC Description

P0047 is set when "0"A is detected in VGT Control solenoid valve control circuit for more than 1 sec.. This code is due to open or short to ground in VGT Control solenoid valve circuit, or open in VGT Control solenoid valve component.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

● Signal monitoring

● VGT Control solenoid valve circuit

● VGT Control solenoid valve component

Enable Conditions

● Engine run

Threshold Value

● Short to GND, wiring open

Diagnostic Time

● 1000ms

Fail Safe

Fuel Cut

NO

EGR Off

YES

Fuel Limit

YES

Check Lamp

NO

Specification

VGT Control solenoid valve component resistance

VGT Control solenoid valve operating Hz

VGT Control solenoid valve operating duty

14.7 ~ 16.1Ω (20℃)

300Hz

75% at idle, decreases as accelerating

Schematic Diagram
Signal Waveform
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