Prelude L4-1955cc 2000 (1987)
Air Door Actuator / Motor: Testing and Inspection
Fig. 9 Vacuum motor testing
1.
Connect a suitable vacuum pump to vacuum motor Fig. 9.
2.
Apply vacuum to motor. Vacuum motor should retain vacuum and linkage rod should move in.
3.
If the vacuum motor does not retain vacuum, or rod does not move in, replace vacuum motor.
4.
Release vacuum. The rod should return. If not, replace vacuum motor.