MANUALS · FUEL [13] · страница 135 из 340 · Открыть оригинал PDF ↗

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THROTTLE POSITION SENSOR

OPERATION

The throttle position sensor converts the throttle
position opening into a voltage and inputs it to
the engine control unit, which then controls the
fuel injection based on the input signal:

The5 Vpower inthe engine control unit is
supplied to the throttle position sensor. Through
the resistor in the sensor, it is earthed inthe
engine control unit:

As the throttle valve shaft rotates from the idle
position towide open position, the resistance
betweenthevariableresistor terminalofthe
throttle positionsensor and the earth terminal
increases:Asa result; the voltage at the throttle
position sensor variable resistance terminal also
increases:

7FU0672

Engine control unit connector

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TROUBLESHOOTING HINTS

Hint 1: The throttle position sensor signal is more
important in the control of automatic trans-
mission than in the engine control. Shifting
shock andother troubles willbe caused
this sensor is faulty:

Hint 2: If the output voltage of the throttle position
sensorisoutof . specification,adjustthe
sensor and check the voltage again: If there is
an evidence of disturbed fixed SAS setting:
adjust the fixed SAS.

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