Mazda 2009 RX-8, Особенности сервиса

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CONTROL SYSTEM [13B-MSP]
01-40–27
01-40
x
When the temperature of the zirconium element is
low, electromotive force is not generated.
Therefore the HO2S is heated by a built-in heater,
facilitating the oxygen sensor activation. Due to
this, the sensor is efficiently activated even
immediately after cold-engine startup, and a
stable sensor output can be obtained.
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NG: PCM
PCM TEMPERATURE SENSOR FUNCTION [13B-MSP]
id0140g1182000
x
Detects the temperature of the PCM.
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PCM TEMPERATURE SENSOR CONSTRUCTION/OPERATION [13B-MSP]
id0140g1181900
x
The PCM temperature sensor is integrated with PCM.
x
A thermistor-type sensor (negative pressure thermistor) has been adopted.
x
Voltage is output based on the resistance value which changes according to the temperature of the PCM.
PCM temperature sensor characteristic
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NG: KNOCK SENSOR
KNOCK SENSOR (KS) CONSTRUCTION/OPERATION [13B-MSP]
id0140g1174200
x
KS No.1 is installed on the front rotor housing.
x
KS No.2 is installed on the rear rotor housing.
x
Converts knocking vibration into a voltage value
using the piezoelectric effect of the semi-
conductor, and sends the value to the PCM.
x
The piezoelectric effect is a phenomenon in which
a difference in electric potential is produced on
the surface of a piezoelectric element by the
application of tensile load or pressure from a
certain direction. Tensile load and pressure
applied to the KS originates from cylinder block
vibration caused by abnormal combustion in the
engine. The difference in electric potential, which
results from the strain by the vibration, is sent to
the PCM as a knocking signal.
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NG: BAROMETRIC PRESSURE SENSOR
14.7
LOW
HIGH
OUTPUT
VOLTAGE
RICH LEAN
AIR/FUEL
RATIO
ar8uun00000212
RESIST
ANCE
SMALL
LARGE
HIGH LOW PCM TEMPERATURE
ar8uun00000253
KS NO.2
KS NO.1
ar8uun00000254