MAF Sensor with IAT Sensor-1 Inspection
Precautions: General safety (00)
MAF Sensor
1)Remove MAF sensor with IAT sensor-1. 
2)Connect MAF sensor with IAT sensor-1 (1) to 12 V battery (2), 3 new 1.5 V batteries in series (3) and voltmeter (4) as shown in figure.
3)Check that voltage varies depending on amount of blowing air as shown in graph below.
4)If faulty condition is found, replace MAF sensor with IAT sensor-1.
| [a]: | Voltage | [c]: | Blowing air: Large |
| [b]: | Blowing air: Small |
IAT Sensor-1
NOTICE:
The MAF sensor with IAT sensor-1 will be damaged if it is exposed to a temperature higher than 100 °C (212 °F).
Do not heat the MAF sensor with IAT sensor-1 to a temperature higher than 100 °C (212 °F).
1)Remove MAF sensor with IAT sensor-1.
2)Check sensor O-ring (1) for damage and deterioration. Replace it if necessary.
3)Check that resistance between sensor terminals varies depending on temperature while blowing hot air to temperature sensing part (2) of MAF sensor with IAT sensor-1 (3) using hot air drier (4).
If faulty condition is found, replace MAF sensor with IAT sensor-1.
If faulty condition is found, replace MAF sensor with IAT sensor-1.
| [a]: | Resistance | 5. | Thermometer |
| [b]: | Temperature |