EGR COOLER BYPASS CONTROL SYSTEM CHECK



 1.Install the vacuum gauge through the three-way finger joint to the vacuum hose between the EGR cooler bypass control solenoid valve and the vacuum actuator.
2.Start the engine. As shown in the table below, confirm the vacuum pressure conditions applied to the vacuum gauge according to the engine coolant temperature.
Engine conditions
 Vacuum gauge conditions
Cold state
(coolant temperature 40 °C or less)
 Being vacuum pressure
Warm state
(coolant temperature 80°C or more)
 Being atmospheric pressure