AIR FLOW SENSOR RATIONARITY
(DTC CODE P0101 / DIAGNOSIS MONITOR CODE 17)

1. Check that the air flow sensor is normally installed.
2. Check the air flow sensor for dirt and foreign matters.
3. Check the air intake systems such as the air cleaner for clogging and leakage.

    

NO Improper installation of the sensor.	YES Proceed to [2] CHECK INSTALLATION OF THE CONNECTOR.

1. Check that the air flow sensor connector is properly installed.
   
   

NO Improper connection of connector	YES Proceed to [3] CHECK WHETHER THE SENSOR IS IN NORMAL CONDITION.

1. Troubleshoot the P06D3 and P06D4 and check whether the air flow sensor is in normal condition.
   

NO Fault in air flow sensor	YES Proceed to [4] CHECK WHETHER OTHER ARE IN NORMAL CONDITION.

1. If the GND terminal is shared in use, disconnect all sensor connectors that use the GND terminal and check whether condition is normal.
   
   

NO Fault in engine ECU	YES Fault in other sensors

1. Confirm the DTC P0101 is inactive

   • Start the engine and let it idling condition.
   • Verify the DTC P0101 is inactive.

   

2. DTC Clear

   • Clear the DTC with Hino DX
   • Confirm the same DTC is not reoccurred

   

P0101 is reoccur: Return to first process Other DTC appear: Refer to concerned Trouble shooting

Complete