Mazda RX-8 2004 - Intake Air Temperature (Iat) Sensor Construction;Operation; Intake Air Temperature (Iat) Sensor Function; Throttle Position (Tp) Sensor Function

CONTROL SYSTEM
01–40–47
01–40
System Diagram
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INTAKE AIR TEMPERATURE (IAT) SENSOR FUNCTION
CHU014018840S03
• Detects the IAT.
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INTAKE AIR TEMPERATURE (IAT) SENSOR CONSTRUCTION/OPERATION
CHU014018840S04
• Installed on the air hose.
• Built into the MAF sensor.
• A thermistor type is used and the resistance
changes according to the IAT.
• As shown in the characteristics graph, when the
IAT is high, the resistance is low, and when the
IAT is low, the resistance is high.
IAT Sensor Characteristics
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THROTTLE POSITION (TP) SENSOR FUNCTION
CHU014018910S01
• Detects the throttle valve opening angle.
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PCM
CPU
ECT SENSOR
CHU0140S049
MAF/IAT
SENSOR
(ILLUSTRATION SHOWS 13B-MSP (HIGH POWER))
CHU0140S050
MAF/IAT
SENSOR
(ILLUSTRATION SHOWS 13B-MSP (HIGH POWER))
CHU0140S051
0
10
5
0
32
-20
-4
20
68
40
104
60
140
80 (˚C)
176 (˚F)
PCM
CPU
RESISTANCE (KILOHM)
INTAKE AIR TEMPERATURE
IAT SENSOR
CHU0140S052