3.
Measure resistance between IATS signal terminal and sensor ground terminal.
IATS #1
IATS #2
Turn ignition switch OFF.
Disconnect the MAFS (for IATS #1) or BPS (for IATS #2) connector.
Measure resistance between IATS signal terminal and sensor ground terminal.
IATS #1
IATS #2
Check that the resistance is within the specification.
IATS #1
Temperature | Resistance (㏀) | |
℃ | ℉ | |
-40 | -40 | 35.14 ~ 43.76 |
-30 | -22 | 20.77 ~ 25.31 |
-20 | -4 | 12.66 ~ 15.12 |
-10 | 14 | 7.9 ~ 9.3 |
0 | 32 | 5.12 ~ 5.89 |
10 | 50 | 3.38 ~ 3.83 |
20 | 68 | 2.29 ~ 2.55 |
30 | 86 | 1.57 ~ 1.75 |
40 | 104 | 1.10 ~ 1.24 |
50 | 122 | 0.78 ~ 0.89 |
60 | 140 | 0.57 ~ 0.65 |
70 | 158 | 0.42 ~ 0.49 |
80 | 176 | 0.31 ~ 0.37 |
90 | 194 | 0.24 ~ 0.29 |
100 | 212 | 0.18 ~ 0.22 |
110 | 230 | 0.144 ~ 0.176 |
120 | 248 | 0.114 ~ 0.141 |
130 | 266 | 0.09 ~ 0.11 |
IATS #2
Temperature | Resistance (㏀) | |
℃ | ℉ | |
-40 | -40 | 40.93 ~ 48.35 |
-30 | -22 | 23.43 ~ 27.34 |
-20 | -4 | 13.89 ~ 16.03 |
-10 | 14 | 8.5 ~ 9.7 |
0 | 32 | 5.38 ~ 6.09 |
10 | 50 | 3.48 ~ 3.90 |
20 | 68 | 2.31 ~ 2.57 |
30 | 86 | 1.9 ~ 2.1 |
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 ~ 0.09 |
140 | 284 | 0.064 ~ 0.079 |
150 | 302 | 0.052 ~ 0.063 |
Turn the ignition switch OFF and disconnect the battery (-) terminal.
Disconnect the mass air flow sensor connector (A) and the installation clamp (B).
Remove the air intake hose (C) from the mass air flow sensor.
Remove the mass air flow sensor after removing the installation bolts.
Turn the ignition switch OFF and disconnect the battery (-) terminal.
Remove the air duct.
(Refer to Engine Mechanical System - "Air Cleaner")
Disconnect the intake air temperature sensor connector (A).
Disconnect the intake air temperature sensor (B) after removing the installation bolts.
Install the component with the specified torques.
Note that internal damage may occur when the component is dropped. In this case, use it after inspecting.
Be careful not to damage the sensing element and the honey cell.
Installation is reverse of removal.
Mass air flow sensor mounting bolt:
3.9 ~ 5.9 N.m (0.4 ~ 0.6 kgf.m, 2.9 ~ 4.3 lb-ft)
Mass air flow sensor clamp mounting screw:
2.9 ~ 4.9 N.m (0.3 ~ 0.5 kgf.m, 2.2 ~ 3.6 lb-ft)
