Engine Petrol Engines
Throttle Position (TP) Sensor
• The TP sensor is built into the throttle body and detects the throttle valve opening angle.
• The TP sensor uses Hall elements to detect throttle valve movement. This non-contact
sensor type improves durability.
• The TP sensor is composed of a main sensor and a 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 and
drive-by-wire control is maintained.
• If both the main and the sub sensor for the TP sensor fail, the 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.
M6FL_01018
Service Training Mazda6 Facelift 01-21
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