Circuit Description
WARNING: This page is about a different car, the 2002 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
Park/Neutral Position (PNP) switch delivers input signals to ECM. Input signals are used for air/fuel correction and for idle speed control. DTC is set when PNP switch is on when vehicle is being operated for more than 30 seconds at 44 MPH or more with engine speed of 1500-2500 RPM. Possible causes are:
- PNP switch circuit is shorted.
- Defective PNP switch.
- Defective ECM.