Toyota
Nissan Versa
 Sedan Service Manual
Engine » Engine control system (EC) » P0127 IAT sensor
Diagnosis Procedure

1.CHECK INTAKE AIR TEMPERATURE SENSOR

Check the intake air temperature sensor. Refer to EC, "Component Inspection".

Is the inspection result normal?

YES >> Check intermittent incident. Refer to GI, "Intermittent Incident".

NO >> Replace mass air flow sensor (with intake air temperature sensor). Refer to EM, "Removal and Installation".

Component Inspection

1.CHECK INTAKE AIR TEMPERATURE SENSOR

  1. Turn ignition switch OFF.
  2. Disconnect mass air flow sensor harness connector.
  3. Check resistance between mass air flow sensor terminals as per the following.

CHECK INTAKE AIR TEMPERATURE SENSOR

Is the inspection result normal?

YES >> INSPECTION END

NO >> Replace mass air flow sensor (with intake air temperature sensor). Refer to EM, "Removal and Installation".

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