Triggering Signals

Distributor contains 3 permanent magnet pick-up coils and a reluctor. When the reluctor on the distributor shaft passes by a pick-up coil, AC voltage is induced in the pick-up coil. The ECM uses the signals from pick-up coils G1 and G2 to determine TDC of cylinder No. 1. The ECM uses the signal from pick-up coil NE to determine incremental crankshaft position and engine speed.