Circuit Description

WARNING: This page is about a different car, the 2003 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.

Crankshaft Position Sensor (CKP) (NE signal) consists of a magnet, iron core and pickup coil. NE signal plate has 34 teeth and is installed next to crankshaft timing pulley. The 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. DTC P0335 is set if no CKP sensor signal is received by ECM during cranking or no CKP sensor signal is received by ECM with engine speed at 600 RPM or more (2 trip detection logic). DTC P0339 is set if no CKP sensor signal is received for .05 seconds or more by ECM with engine speed at 1000 RPM or more, STA signal is off, or 3 seconds or more has lapsed after STA signal is switched from on to off. Possible causes are:

CKP sensor circuit is open or shorted.
Defective CKP sensor.
Defective crankshaft timing pulley.
Defective ECM.