W350 1 Ton Pickup 4WD V8-360 5.9L VIN 1 4-bbl (1988)
Pick-Up Coil: Description and Operation
Single Pick-Up Distributor
Dual Pick-Up Distributor
The Electronic Control Unit (ECU) uses the Pick-Up Coil to sense proper timing. This is accomplished when the reluctor, rotating on the distributor
shaft inside the distributor housing, induces a small electrical signal into the pick-up coil. This signal then continues to the ECU where it causes the
switching transistor to trigger ignition coil firing. Some distributors are equipped with two pick-up coils, one is used just for starting and the second for
all other run conditions. A Dual Pick-Up Start-Run Relay is used on vehicles with dual pick-up distributors to switch from one pick-up coil to the other
coil.