Inertia Fuel Shutoff (IFS) Switch
- Turn ignition off. Remove IFS switch. IFS switch is located inside of trunk area below left side of floor mat. Shake inertia switch to force switch into tripped position (switch open). On 1.8L, measure resistance between IFS switch terminals that connect to Blue and Black wires. On 2.0L A/T and 2.5L, measure resistance between switch terminals. See Fig 1.
- On all models, with IFS switch open (tripped), resistance should be more than 10,000 ohms. With IFS switch closed (set), resistance should be less than 5 ohms. If IFS switch does not test as specified, replace switch.
Courtesy of FORD MOTOR CO.