Air Injection Valve Control Solenoid
To test system, see AIR INJECTION VALVE diagnostic chart.
- To test solenoid, disconnect vacuum lines and electrical connector from solenoid. Remove solenoid. Connect hand-held vacuum pump to vacuum port "B" of solenoid. See Fig 1 . Apply vacuum. Vacuum should now be available at port "C", but not at port "A".
- Apply battery voltage across solenoid connector terminals, ensuring polarity is correct to prevent solenoid damage. Vacuum should now be available at port "A", but not at port "C". Replace solenoid if it does not operate as specified.
NOTE:
On some air injection valve control solenoids, port "C" may be a vent that is capped with a filter. Also, if solenoid does not respond as specified, perform test again, considering port "A" as port "B" and vice versa.