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Home >> GMC >> 2020 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Mechanical - 1.5L (LYX)) >> Description and Operation >> Compressor Air Intake Turbocharger System Description >> Turbocharger Wastegate Open

Turbocharger Wastegate Open

WARNING: This page is about a different variant/trim than selected.
GM3783330Courtesy of GENERAL MOTORS COMPANY
Callout Component Name
1 Turbocharger Wastegate Diaphragm Valve
2 Spring Force
3 Exhaust Gas Pressure
4 Regulating Pressure
5 Turbine
6 Compressor
7 Turbocharger Wastegate Actuator Solenoid Valve with Duty Cycle at 0 percent

The wastegate is completely closed at idle. All of the exhaust energy is passing through the turbine.

During normal operation, when wide open throttle is requested at lower engine speeds, the ECM commands the wastegate solenoid with a duty cycle of 100% to minimize any turbo lag. During engine loads in the middle and upper RPM ranges, the ECM commands the solenoid with a duty cycle of 65 - 80%.