Civic Hatchback L4-1488cc 1.5L SOHC (D15A2) 3V Carb (1987)
Vacuum Switch: Testing and Inspection
Control Switch
1.
Push voltmeter positive probe into brown wire terminal at emissions box No. 1 white connector and connect negative probe to suitable ground.
2.
Start engine and check for voltage during deceleration.
3.
If voltage is not available, disconnect vacuum hose No. 1 from emissions box No. 1 and check for vacuum.
4.
If there is no vacuum, check vacuum line for leaks, blockage or disconnected hose and repeat test.