Crankshaft Position/Top Dead Center/Cylinder Position (CKP/TDC/CYP) Sensor

Each sensor generates a separate signal whether grouped together or separate. CKP sensor determines fuel injection timing and ignition of each cylinder and detects engine speed. TDC sensor determines ignition timing at start-up (cranking) and detects when crank angle signal is abnormal. CYP sensor detects position of cylinder No. 1 for sequential fuel injection to each cylinder. On Accord 3.0L, the CYP sensor has been replaced with another TDC sensor.

On Civic and CR-V, CKP/TDC/CYP sensor group is located inside distributor housing. On Accord 2.3L, Oasis, Odyssey and Prelude, CYP sensor is located in distributor and CKP/TDC sensor group is located next to timing belt drive pulley. On Accord 3.0L, CKP sensor is located next to timing belt drive pulley and TDC1/TDC2 sensor group is located behind front camshaft pulley.