DTC P0110-15: Intake Air Temperature Sensor 1 Bank 1 Circuit Short to Battery or Open [08/2020 - ]: Procedure

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the mass air flow meter sub-assembly connector.
2. Connect terminals 4 (THA) and 2 (E2G) of the mass air flow meter sub-assembly connector on the wire harness side.
3. Connect the Techstream to the DLC3.
4. Turn the ignition switch to ON.
5. Turn the Techstream on.
6. Enter the following menus: Powertrain / Engine / Data List / Intake Air Temperature.

   Powertrain > Engine > Data List 

   Tester Display
   Intake Air Temperature

7. According to the display on the Techstream, read the Data List.

   OK (except Mexico Models)

   Techstream Display	Specified Condition
   Intake Air Temperature	Higher than 128°C (262°F)

   OK (for Mexico Models)

   Techstream Display	Specified Condition
   Intake Air Temperature	Higher than 135°C (275°F)

   HINT: 

   Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.

   Refer to INITIALIZATION [08/2020 - 12/2021] , or refer to INITIALIZATION [12/2021 - 11/2024] , or refer to INITIALIZATION [11/2024 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY 

Refer to REMOVAL [08/2020 - ]

Result: 

NG 

See step  2

1. Disconnect the mass air flow meter sub-assembly connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C17-4 (THA) - C45-102 (THA)	Always	Below 1 Ω
   C17-2 (E2G) - C45-79 (E2G)	Always	Below 1 Ω
   C17-4 (THA) or C45-102 (THA) - Other terminals	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ECM 

Refer to REMOVAL [08/2020 - 12/2021] , or refer to REMOVAL [12/2021 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR