280ZX L6-2753cc 2.8L SOHC (L28E) (1982)
Vacuum Control Flap Switchover Valve: Testing and Inspection
Fig. 22 Vacuum switching valve air flow
1.
Remove both hoses and harness, solenoid attaching screws and remove valve.
2.
Operate solenoid valve with battery voltage to determine if air flows through valve properly, Fig. 22.