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Home >> Toyota >> 2000 >> RAV4 Base, AWD, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Self-Diagnostics >> Diagnostic Tests >> DTC P1780: Park/Neutral Position (PNP) Switch Circuit (A/T Only) >> Circuit Description
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Circuit Description

PNP switch sends a signal to ECM when transaxle is in Neutral or Park. This signal is used for air/fuel correction and for idle speed control. DTC is set when 2 or more switches are on simultaneously for "R", "N", "2" and "L" position or when ECM is receiving an ON signal from PNP switch when vehicle is being operated for more than 30 seconds at 50 MPH or more (2000-5000 RPM). Possible causes are:

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