Midsize LTD L4-140 2.3L SOHC (1986)
Fuel Pump Inertia Switch: Testing and Inspection
Push down on the reset button to make sure the switch is closed.
Use DVOM with LOS button On and measure voltage across both terminals of the inertia switch. If DVOM reading is greater than 0.3V, replace the
inertia switch.
NOTE: In the closed position, the button can be depressed an additional 1/16-inch against a spring. This is a normal condition and does not adversely
effect the switch operation.