Circuit Description
WARNING: This page is about a different car, the 2002 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
Variable Valve Timing (VVT) sensor consists of a signal plate and pick-up coil. Signal plate has 3 teeth and is mounted on each camshaft sprocket. VVT sensor provides feedback to ECM in order to control intake valve timing. DTC is set when ECM does not sense VVT sensor signal during cranking for 4 or more seconds. DTC is also set if ECM does not sense VVT sensor signal with engine speed at 600 RPM or more for 5 or more seconds. DTC is also set if ECM senses VVT sensor signal 5 times while crankshaft rotates 2 times. Possible causes are:
- VVT sensor circuit is open or shorted.
- Defective VVT sensor.
- Defective ECM.