Somewhere the wires to the VSS will go back to a connector .. I think this is x53/1 connector.
I don't have the schematic up now..
Anyway , the two leads that go to the coil should have an ohm value .. if they do not, it is open and therefore does not pick up the signal
The meter should be on OHMS scale and the leads should be placed across the coil..[ unplugged ]