INSPECTION
- 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]. WHEN ENGINE IS COLD ENGINE OPERATING CONDITION REFERENCE Engine operating condition Applied vacuum Result Idling 50 kPa (7.3 psi) Vacuum is held 3,000 rpm WHEN ENGINE IS WARM ENGINE OPERATING CONDITION REFERENCE 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
Scheme 12
- Look for loose connections, sharp bends or damage to the fuel vapor lines.
- Look for distortion, cracks or fuel leakage.
- After removing the EVAP. canister, inspect for cracks or damage.
Note. 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 to which the red-striped vacuum hose was connected.
- Apply vacuum and check when voltage is applied to the PCSV and when the voltage is discontinued. BATTERY VOLTAGE REFERENCE 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 (ohms) : 16.0 ohms at 20°C (68°F)
