MAF and IAT Sensor On-Vehicle Inspection
NOTE:
Before performing this inspection, be sure to read the "Precautions for ECM Circuit Inspection" under PRECAUTIONS FOR ENGINE
.
Check that MAF sensor signal and IAT sensor signal are output properly, see INSPECTION OF ECM AND ITS CIRCUITS .
If faulty condition is found, check the following points:
- Wire harness and connections
- MAF and IAT sensor, see MAF AND IAT SENSOR INSPECTION .