Component Inspection

Engine

Engine Control - P0315 Crankshaft Position System Variation Not Learned - Component Inspection

Component Inspection

1. Set up an oscilloscope as follows :
Channel A (+): terminal 2 of the CKPS (back probe), (-): ground
Channel B (+): terminal 2 of the CMPS (back probe), (-): ground
2. Start the engine and check for signal waveform compared with reference waveform as below.








Fig.1) The square wave signal should be smooth and without any distortion.
Fig.2,3)The CMPS falling (rising) edge is coincided with 3 - 5 tooth of the CKP from one longer signal (missing tooth)
3. Is the signal waveform normal?