Tundra Access Cab LTD 4WD V8-4.7L (2UZ-FE) (2001)
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Transmission Position Switch/Sensor: Description and Operation
PARK / NEUTRAL POSITION SWITCH
Engine Control System
The park/neutral position switch comes on when the shift lever is in the N or P position. When it comes on, terminal NSW of the ECM is grounded to the
body ground via the starter relay, thus the terminal NSW voltage becomes 0 V. When the shift lever is in the D, 2, L or R position, the park/neutral
position switch goes off, so the voltage of the terminal NSW becomes battery voltage and the voltage of the ECM internal power source. If the shift lever
is moved from the N position to the D position, this signal is used for air-fuel ratio correction and for idle speed control (estimated control), etc.
Transmission Control System
The park/neutral position switch detects the shift lever position and sends signals to the ECM.
The ECM receives signals (NSW, R, D, 2 and L) from the park/neutral position switch.
