Montero LS 4WD V6-2972cc 3.0L SOHC 24 Valve (1996)
Throttle Position Sensor: Testing and Inspection
THROTTLE POSITION SENSOR
OPERATION
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The throttle position sensor functions to convert the degree of opening of the throttle valve to voltage, and to input that voltage (as signals) to
the engine control module. The engine control module, based upon those signals, then regulates the amount of fuel injection, etc.
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The 5 V power supply within the engine control module is supplied to the throttle position sensor, after which it passes through the resistance
within the sensor and is grounded as the engine control module.
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When the throttle valve shaft is rotated all the way from the idling position to the fully open position, the resistance between the throttle
position sensor's variable-resistance terminal and the ground terminal also increases in accordance with that rotation, and, as a result, the
voltage of the throttle position sensor's variable-resistance terminal also becomes higher in accordance with that rotation.
TROUBLESHOOTING HINTS
Hint 1:
The signals of the throttle position sensor are more important for control of the automatic transmission than for control of the engine; shifting
"impact shocks" are produced if there is a malfunction of the throttle position sensor.
Hint 2:
If the voltage of the throttle position sensor is outside the standard value, check once again after making the throttle position sensor adjustment. In
addition, if there are any indications that the fixed SAS has been moved, adjust the fixed SAS.
