3.
Measure resistance between the terminals 3 and 2 of MAFS connector.
Intake Air Temperature Sensor (IATS) is Negative Temperature Charcteristics(NTC) thermistor which is installed into both Mass Air Flow Sensor(MAFS) and Boost Pressure Sensor(BPS), It senses intake air temperature which are installed in front of turbocharger (inside of MAFS) and behind it (inside of BPS).
Comparing air temperature from both sensors (one is intake air temperature, the other is air temperature passing through turbo charger), more accurate sensing of intake air temperature is possible.
ECM uses intake air temperature signal to performs EGR control correction and fuel injection quantity correction.
Temperature℃(℉) | Resistance(kΩ) |
-20(-4) | 13.89 ~ 16.03 |
-10(14) | 8.50 ~ 9.71 |
0(32) | 5.38 ~ 6.09 |
10(50) | 3.48 ~ 3.90 |
20(68) | 2.31 ~ 2.57 |
30(86) | 1.56 ~ 1.74 |
40(104) | 1.08 ~ 1.21 |
50(122) | 0.76 ~ 0.85 |
60(140) | 0.54 ~ 0.62 |
70(158) | 0.40 ~ 0.45 |
80(176) | 0.29 ~ 0.34 |
90(194) | 0.22 ~ 0.26 |
100(212) | 0.17 ~ 0.20 |
110(230) | 0.13 ~ 0.15 |
120(248) | 0.10 ~ 0.12 |
130(266) | 0.08 ~ 0.10 |
Temperature℃(℉) | Resistance(kΩ) |
-20 | 12.66 ~ 15.12 |
0 | 5.2 ~ 5.9 |
20 | 2.29 ~ 2.55 |
80 | 0.31 ~ 0.37 |
Turn the ignition key off.
Disconnect Boost Pressure Sensor connector.
Measure resistance between the terminals 3 and 2 of MAFS connector.
Refering to "SPECIFICATION", check that the resistance is within specification.
Turn the ignition key off.
Disconnect Boost Pressure Sensor connector.
Measure resistance between the terminals 3 and 4 of BPS connector.
Refering to "SPECIFICATION", check that the resistance is within specification.
