Diagnostic Aids

WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

This DTC uses two-trip detection logic. Using Toyota hand-held tester or scan tool, read FREEZE FRAME data. Freeze frame data records engine conditions when malfunction is detected.

If oscilloscope is available, crankshaft position sensor operation may be checked by reading crankshaft position sensor waveform pattern with engine idling. This may be done by monitoring the crankshaft position sensor signal which may be referred to as the NE signal. Crankshaft position sensor waveform pattern may be checked by connecting oscilloscope between terminals No. 16 (Red wire) and No. 24 (Green wire) at ECM electrical connector E8. This is the NE+ and NE- terminals on ECM. ECM is located behind the glove box. See Figure. For ECM electrical connector terminal identification, see Figure. Crankshaft position sensor waveform pattern should be properly displayed. See Figure.