THROTTLE POSITION (TP) SENSOR CONSTRUCTION/OPERATION


BHE014018910T02

• The sensor is built into the throttle body and detects the throttle valve opening angle.

1
Valve body
2
Throttle valve
3
TP sensor

• The Hall element design has been adopted for the sensor.

• A non contact type sensor has been adopted to improve durability.

• The TP sensor is composed of the main sensor and sub sensor, and detects the throttle valve opening angle with these two sensors (main and sub).

• Even if a malfunction occurs in either one of the sensors, the detection is performed with a normal sensor and drive-by-wire control is maintained.

• If both the MAIN and SUB sensors for the TP sensor malfunction, signals necessary for the drive-by-wire control are not input to the PCM and the drive-by-wire control is disabled.

• However, even though the drive-by-wire control is disabled, the throttle valve opening angle necessary for minimum driving is maintained mechanically.

TP Sensor Voltage Characteristics

1
TP sensor
2
Hall element sensor
3
Magnet
4
PCM
5
Sub
6
CPU
7
Main
8
High
9
Voltage
10
Low
11
Small
12
Throttle valve opening angle
13
Large
14
Sub sensor
15
Main sensor