Engine Brake

The engine brake is enabled by pressing the engine brake switch. When the engine brake is enabled the engine brake indicator will be turned on. The engine brake indicator will blink if the engine brake is disabled due to engine operating conditions or a system fault is detected. When the engine brake is enabled the PCM controls the turbocharger actuator to move the VGT vanes to create higher exhaust back pressure during decel events. If the engine brake switch is enabled, the engine brake will automatically engage anytime the accelerator pedal is released and the engine RPM is greater than a calibrated threshold. Pressing the accelerator pedal will disengage the engine brake and return the VGT vanes to the normal position.