Civic 1500 (Calif. Auto. Trans. Only)
When engine coolant temperature is below the set temperature of the thermosensor and engine is at idle, the purge control/unloader solenoid valve cuts off manifold vacuum to the vacuum retard unit.
When engine coolant temperature is below the set temperature of the thermosensor and engine is at idle, the purge control/unloader solenoid valve cuts off manifold vacuum to the vacuum retard unit.