Component Tests and General Diagnostics

Purge Control Solenoid Valve Inspection (Leaks):

1. Mark and then disconnect the vacuum hoses (black, red striped) from the solenoid valve.
2. Disconnect the harness connector from the solenoid valve.
3. Connect a hand vacuum pump to the nipple the red striped hose was removed from.

Fig. 1 Purge Control Solenoid Valve Inspection (Operation):

4. Apply vacuum to the solenoid valve and verify that when power is applied vacuum leaks and when power is removed vacuum holds.

Purge Control Solenoid Valve Inspection (Coil Resistance):

5. Using an ohm meter measure the solenoid coil resistance.
Resistance Value
36 - 44 ohms @ 68° F (20° C).