MALFUNCTION OF INTAKE MANIFOLD TEMPERATURE SENSOR [LO]
(DTC CODE P0097 / DIAGNOSIS MONITOR CODE 18)

1. Set the starter key to the "LOCK" position and disconnect the intake air temperature sensor connector.
2. Measure resistance between the 1st and 2nd terminals of the intake-air temperature sensor connector (component side).

   
   

   
   

   Standard value

   Intake air temperature in measurement (ºC {ºF})	Resistance
   50 {122}	2202 Ω
   100 {212}	508.1 Ω
   150 {302}	160.4 Ω

    

NO Failure in intake air temperature sensor	YES Proceed to [2] Measuring voltage between terminals

1. Turn the starter key "ON" and measure voltage between the 1st and 2nd terminals of the intake air temperature sensor connector (vehicle harness side).

Standard value: 4.5-5.5 V

 

NO Go to [3] Measuring resistance between terminals.	YES Disconnection of the harness

1. Set the starter key to the "LOCK" position and connect the signal check harness.
2. Disconnect the signal check harness connectors from the ECU.
3. Turn the starter key "ON" and measure resistance between the terminals E63 and E64.

ECU terminal No.	Description of terminal
E63	Intake manifold temperature sensor
E64	GND

Standard value

Intake air temperature in measurement (ºC {ºF})	Resistance
50 {122}	2202 Ω
100 {212}	508.1 Ω
150 {302}	160.4 Ω

 

NO Failure in intake air temperature sensor	YES Proceed to [4] Measuring voltage between terminals

1. Set the starter key to the "LOCK" position and connect the signal check harness connectors to the ECU.
2. Disconnect the signal check harness connectors from the vehicle harness.
3. Turn the starter key "ON" and measure voltage between the terminals E63 and E64.

   
   

   
   

   Standard value: 4.5-5.5 V

    

NO Fault in engine ECU and/or ECU connectors	YES Disconnection of the harness

1. Confirm the DTC P0097 is inactive

   • Start the engine and let it idling condition.
   • Verify the DTC P0097 is inactive.

   

2. DTC Clear

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

   

P0097 is reoccur: Return to first process Other DTC appear: Refer to concerned Trouble shooting

Complete