ENGINE CONTROL SYSTEM OUTLINE [ZJ, ZY]

id0140c4100100

Features

Improved driveability	•  Drive-by-wire control adopted •  Variable intake air control adopted (With variable intake air system) •  Variable valve timing control adopted
Improved emission performance	•  Variable tumble control adopted •  A heater element is integrated with the A/F sensor and HO2S •  All-range air/fuel ratio sensor adopted •  EGR system adopted
Improved fuel economy	•  A drive-by-wire control (idle air control) has been adopted which contributes to lower fuel consumption
Wiring harness simplification	•  CAN adopted
Improved accuracy	•  Camshaft position sensor with GMR element adopted •  Crankshaft position sensor with GMR element adopted
Improved reliability	•  Two-circuit throttle position sensor adopted •  Two-circuit accelerator pedal position sensor adopted

Specification

Item	Specification
Neutral switch (MTX)	ON/OFF
CPP switch	ON/OFF
ECT sensor	Thermistor
IAT sensor (Inside MAF sensor)	Thermistor
PCM temperature sensor	Thermistor
CKP sensor	GMR element
CMP sensor	GMR element
TP sensor	Hall element
APP sensor	Hall element
MAF sensor	Hot-wire
A/F sensor	Zirconia element (All-range air/fuel ratio sensor)
HO2S	Zirconia element (Stoichiometric air/fuel ratio sensor)
MAP sensor	Piezoelectric element
KS	Piezoelectric element

―  Utilizes a characteristic of the semiconductor in which the resistance value fluctuates largely in accordance with the temperature fluctuation.

―  There are two types of thermistors, one with a negative characteristic in which the resistance value decreases together with the increase in temperature, and the other with a positive characteristic in which the resistance value increases together with the temperature increase.

―  GMR (Giant Magneto Resistance): Giant magneto resistive element

―  Utilizes the effect of GMR in which the electrical resistance fluctuates largely according to the changes in magnetic flux.

―  The amount of fluctuation in the electrical resistance increases by the use of a sensitive magnetic element.

―  The generation of voltage utilizing the Hall effect occurs by passing electrical current perpendicular to the magnetic field.

―  Utilizes a characteristic in which the amount of current supplied to the filaments fluctuates according to the air speed and ambient temperature.

―  Utilizes a characteristic of the zirconia element in which electromotive force occurs according the difference in the acidic concentration of the exterior and interior surfaces of the zirconia element when its temperature is high.

―  Utilizes the piezoelectric effect of the piezoelectric element which produces voltage by the application of pressure.