DTC P0112: Intake Air Temperature Circuit Low Input; DTC P0113: Intake Air Temperature Circuit High Input [10/2015 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Data List / Intake Air.

   Powertrain > Engine and ECT > Data List 

   Tester Display
   Intake Air

5. Read the value displayed on the Techstream.

   OK

   Same as actual intake air temperature.

   Result

   Result	Proceed to
   -40°C (-40°F)	A
   Higher than 128°C (262°F)	B
   Same as actual intake air temperature	C

   HINT: 

   • If there is an open circuit, the Techstream indicates -40°C (-40°F).
   • If there is a short circuit, the Techstream indicates higher than 128°C (262°F).

Result: 

B 

See step  4

Result: 

C 

CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [10/2015 - ] 

Result: 

A 

See step  2

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the mass air flow meter sub-assembly connector.
2. Connect terminals D9-4 (THA) and D9-2 (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 power switch on (IG).
5. Turn the Techstream on.
6. Enter the following menus: Powertrain / Engine and ECT / Data List / Intake Air.

   Powertrain > Engine and ECT > Data List 

   Tester Display
   Intake Air

7. Read the value displayed on the Techstream.

   Standard Value

   Higher than 128°C (262°F)

   HINT: 

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

   Refer to INITIALIZATION [10/2015 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to  REMOVAL [10/2015 - ] 

Result: 

NG 

See step  3

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D9-4 (THA) - D1-129 (THA)	Always	Below 1 Ω
   D9-2 (E2G) - D1-96 (E2G)	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ECM ASSEMBLY. Refer to  REMOVAL [10/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 03/2018]  , or refer to  REMOVAL [03/2018 - 08/2019]  , or refer to  REMOVAL [08/2019 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the mass air flow meter sub-assembly connector.
2. Connect the Techstream to the DLC3.
3. Turn the power switch on (IG).
4. Turn the Techstream on.
5. Enter the following menus: Powertrain / Engine and ECT / Data List / Intake Air.

   Powertrain > Engine and ECT > Data List 

   Tester Display
   Intake Air

6. Read the value displayed on the Techstream.

   Standard Value

   -40°C (-40°F)

   HINT: 

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

   Refer to INITIALIZATION [10/2015 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to  REMOVAL [10/2015 - ] 

Result: 

NG 

See step  5

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D9-4 (THA) or D1-129 (THA) - Body ground and other terminals	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ECM ASSEMBLY. Refer to  REMOVAL [10/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 03/2018]  , or refer to  REMOVAL [03/2018 - 08/2019]  , or refer to  REMOVAL [08/2019 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR