Grand Vitara 4WD V6-3.2L (2010)
Air Flow Meter/Sensor: Testing and Inspection
MAF (Mass Air Flow) and IAT (Intake Air Temperature) Sensor Inspection
Mass Air Flow (MAF) & Intake Air Temperature (IAT) Sensor Inspection
IAT sensor inspection
CAUTION:
-
When servicing MAF & IAT sensor, be sure to observe the following items.
-
Do not disassemble MAF & IAT sensor.
-
Do not expose MAF & IAT sensor to any shock. If it has been dropped, it should be replaced.
-
Do not clean MAF & IAT sensor.
-
Do not blow compressed air by using air gun or the like.
-
Do not put finger or any other object into MAF & IAT sensor.
-
Do not heat MAF & IAT sensor more than 100 °C (212 °F). Otherwise, MAF & IAT sensor will be damaged.
1. Remove MAF & IAT sensor.
2. Check sensor O-ring (1) for damage and deterioration. Replace as necessary.
3. Measure resistance between sensor terminals while blowing hot air to temperature sensing part (2) of MAF & IAT sensor (3) using hot air drier
(4).
If faulty condition is found, replace MAF & IAT sensor.
Intake air temperature sensor resistance
-20 °C (-4 °F): 12.6 - 15.1 kohms
20 °C (68 °F): 2.29 - 2.55 kohms
80 °C (176 °F): 0.312 - 0.370 kohms
