Disconnect the vacuum hose from the throttle body, and connect a vacuum pump to the vacuum hose.
Check the following points when the engine is cold [engine coolant temperature 60°C(140°F) or below] and when it is warm [engine coolant temperature 80°C(176°F) or higher].
Engine operating condition | Applied vacuum | Result |
Idling | 50 kPa (7.3 psi) | Vacuum is held |
3,000 rpm |
Engine operating condition | Applied vacuum | Result |
Idling | 50 kPa (7.3 psi) | Vacuum is held |
Within 3 minutes after engine start at 3,000 rpm | Try to apply vacuum | Vacuum is released |
After 3 minutes have passed after engine start at 3,000 rpm | 50 kPa (7.3 psi) | Vacuum will be held momentarily, after which, it will be released |
When disconnecting the vacuum hose, make an identification mark on it so that it can be reconnected to its original position.
Disconnect the vacuum hose from the solenoid valve.
Detach the harness connector.
Connect a vacuum pump to the nipple which is connected to intake manifold.
Apply vacuum and check when voltage is applied to the PCSV and when the voltage is discontinued.
Battery voltage | Normal condition |
When applied | Vacuum is released |
When discontinued | Vacuum is maintained |
Measure the resistance between the terminals of the solenoid valve.
PCSV coil resistance (Ω): 14.0 ~ 18.0 at 20℃ (68℉)
