Prelude L4-2056cc DOHC (1990)
Crankshaft Position Sensor: Description and Operation
TDC/CRANK Sensor
The TDC/CRANK Sensor, located inside the distributor housing, determines timing for fuel injection and ignition of each cylinder and also detects
engine RPM. The TDC sensor determines ignition timing at start-up (cranking) and when crank angle signal is abnormal.
The TDC/CRANK Sensor consists of the crank rotor, TDC rotor, their associated pick-up coils, and the distributor shaft.
Fig. 32 CYL Sensor
The CYL sensor, located at the back end of the exhaust camshaft, detects the position of number 1 cylinder for use in the timing of the sequential fuel
injection to each cylinder.
