PR25DD engine: Fail-Safe

Engine operating condition in fail-safe mode

Fail safe mode

Vehicle behavior

Device fix mode

• This mode fixes the electric IVT motor and the EVT control solenoid valve in the reference position.
• The intake manifold runner control valve motor is turned OFF (intake manifold runner control valve opens).
• A control signals is not transmitted to EGR volume control valve and the EGR volume control is deactivated.