P0127
P0127 IAT SENSOR
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1. PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
1.Turn ignition switch OFF and wait at least 10 seconds.
2.Turn ignition switch ON.
3.Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
This test may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle.
- GO TO 2.
2. PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1.Wait until engine coolant temperature is less than 96�C (205�F)
-Turn ignition switch ON.
-Select "DATA MONITOR" mode of "ENGINE" using CONSULT.
-Check the engine coolant temperature.
-If the engine coolant temperature is not less than 96�C (205�F), turn ignition switch OFF and cool down engine.
NOTE:
Perform the following steps before engine coolant temperature is above 96�C (205�F).
2.Turn ignition switch ON.
3.Select "DATA MONITOR" mode of "ENGINE" using CONSULT
4.Start engine.
5.Hold vehicle speed at more than 70 km/h (43 MPH) for 100 consecutive seconds.
CAUTION:
Always drive vehicle at a safe speed.
6.Check 1st trip DTC.
With GST
Follow the procedure "With CONSULT" above.
Is 1st trip DTC detected?
YES- Proceed to .
NO- INSPECTION END
Diagnosis Procedure
1. CHECK INTAKE AIR TEMPERATURE SENSOR 1
Check the intake air temperature sensor 1. .
Is the inspection result normal?
YES- Check intermittent incident. Intermittent Incident.
NO- Replace mass air flow sensor (with intake air temperature sensor 1). Exploded View.
Component Inspection
1. CHECK INTAKE AIR TEMPERATURE SENSOR 1
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.
Is the inspection result normal?
YES- INSPECTION END
NO- Replace mass air flow sensor (with intake air temperature sensor 1). Exploded View.