P0101

DTC P0101: Mass Air Flow Circuit Range / Performance

Wiring Diagram:

Wiring Diagram

DTC Detecting Condition And Trouble Area:

DTC Detecting Condition and Trouble Area

DTC Confirmation Procedure

WARNING:
- When performing a road test, select a place where there is no traffic or possibility of a traffic accident and very careful during testing to avoid occurrence of an accident.
- Road test should be carried out with 2 persons, a driver and a tester, on a level road.

NOTE:
Check to make sure that the following conditions are satisfied when using this "DTC Confirmation Procedure".
- Intake air temperature: higher than -10 °C (14 °F).
- Atmospheric pressure: higher than 75 kPa (560 mmHg) (Altitude: lower than 2790 m (9150 ft)).
- The following DTCs are not detected: MAP sensor, IAT sensor, ECT sensor, EGR system, barometric pressure sensor and MAF sensor (other than P0101).

1. With ignition switch OFF, connect scan tool.
2. Turn ON ignition switch and clear DTC by using scan tool if any.
3. Start engine and warm up to normal operating temperature.
4. Increase vehicle speed till engine speed is reached 500 - 6000 r/min.
5. Drive vehicle for 1 min. at engine speed 500 - 6000 r/min.
6. Stop vehicle and check DTC and pending DTC by using scan tool.

Step 1-3:

Step 4-6:

DTC Troubleshooting

NOTE: Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to Precautions for DTC Troubleshooting.