Ranger 4WD L4-140 2.3L SOHC (1984)
Barometric Pressure Switch: Testing and Inspection
Component Testing
Fig. 42 Ignition barometric pressure switch resistance chart. 1984
1.
Disconnect switch from ignition module.
2.
Connect suitable ohmmeter across switch terminals and compare resistance measured to values in chart.
3.
Replace switch if resistance is not within specifications.
