Circuit Description

The crankshaft position sensor (NE signal) consists of a magnet, iron core and pickup coil. NE signal plate has 34 teeth and is installed near the crankshaft timing pulley. NE signal sensor generates 34 signals at every engine revolution. ECM detects crankshaft angle and engine speed based on NE signals, and cylinder detection based on combination of VV1+ and NE signals. If DTC P0016 is set, there is deviation in crankshaft position sensor signal and VVT sensor 1 signal (2 trip detection logic). If DTC P0018 is set, there is deviation in crankshaft position sensor signal and VVT sensor 2 signal (2 trip detection logic). Check mechanical system (jumping teeth of timing belt) or ECM.