DTC Troubleshooting: P0111(3.0L Engine): Inspection
MAF sensor/IAT sensor 1 Visual Inspection
Test Procedure
- Preparation
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- MAF sensor/IAT sensor 1: removed
- Procedure
-
- Check for dirt or debris in MAF sensor/IAT sensor 1.
- Normal Conditions
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- There is no dirt or debris.
Results
- If it is abnormal, there is a problem with MAF sensor/IAT sensor 1.
MAF Sensor/IAT Sensor 1 Inspection
NOTE:
Since there is no direct method to test the inspection item, troubleshooting is performed using a known-good component.
Test Procedure
- Install a known-good MAF sensor/IAT sensor 1 and attempt to reproduce the failure.
Results
- If the failure is reproduced, there is a problem with other related components.
- If the symptom/DTC goes away, MAF sensor/IAT sensor 1 must be faulty.
PCM Inspection
Test Procedure
- If the other inspection item(s) indicated a normal condition, then it is determined that the remaining PCM is the cause.
Results
- There is a problem with the PCM.