Solenoid Test
WARNING: This page is about a different car, the 2000 Volvo V70, 2000 Volvo S70, 1999 Volvo V70, 1999 Volvo S80, and 1999 Volvo S70. However, it is still accessible from the selected car via links, so may be relevant.
With starter on bench, connect negative battery lead to starter solenoid terminal "M". Connect positive battery lead to solenoid terminal No. 50. See Fig 1 . If plunger does not extend firmly, replace solenoid.