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THROTTLE POSITION (TP) SENSOR [SKYACTIV-G 2.0]

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2016 – MX-5 – Engine

THROTTLE POSITION (TP) SENSOR [SKYACTIV-G 2.0]

Purpose

  • The TP sensor detects the actual throttle valve opening angle.

Function

  • The TP sensor sends the throttle valve opening angle to the PCM as a throttle valve position signal.

  • For the throttle valve position signal, main (No.1) and sub (No.2) signals of different characteristics have been adopted to enhance sensor malfunction detection accuracy.

    TP sensor characteristic

Construction

  • The TP sensor is built into the throttle body and coaxially arranged with the throttle valve shaft.

  • Non-contact hall elements have been adopted for the detection area of the TP sensor.

  • The Hall elements detect the magnetic field which changes as the shaft rotates and outputs it as a voltage value.

Operation

1. The TP sensor detects (1) the throttle valve opening angle.

2. The TP sensor sends (2) the detected throttle valve opening angle to the PCM as a throttle valve position main (No.1) and sub (No.2) signals.

Fail-safe

DTC No.

Fail-safe function

P0122:00

  • Restricts the upper limit of the engine speed.

P0123:00

  • Restricts the upper limit of the engine speed.

P0222:00

  • Restricts the upper limit of the engine speed.

P0223:00

  • Restricts the upper limit of the engine speed.

P2101:00

  • Restricts the upper limit of the engine speed.

  • Stops the drive-by-wire control (throttle valve is open at approx. 8° by return spring force).

P2109:00

  • Restricts the upper limit of the engine speed.

  • Stops the drive-by-wire control (throttle valve is open at approx. 8° by return spring force).

P2135:00

  • Restricts the upper limit of the engine speed.

  • Stops the drive-by-wire control (throttle valve is open at approx. 8° by return spring force).

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