DTC P0112: Intake Air Temperature Circuit Low Input; DTC P0113: Intake Air Temperature Circuit High Input: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Data List / Intake Air.
5. Read the value displayed on the Techstream.

   Standard

   Same as actual intake air temperature.

   Result

   Temperature Displayed	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).

B → See step   4 

C → See step   6 

A: Go to next step 

1. Disconnect the mass air flow meter connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Connect terminals 1 (THA) and 2 (E2) of the mass air flow meter wire harness connector.
3. Connect the Techstream to the DLC3.
4. Turn the engine switch on (IG).
5. Turn the Techstream on.
6. Enter the following menus: Powertrain / Engine / Data List / Intake Air.
7. Read the value displayed on the Techstream.

   Standard

   Higher than 128°C (262°F)

NG → See step   3 

OK → See step   7 

1. Disconnect the mass air flow meter connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Connect terminals E3-22 (THA) and E3-28 (E2) of the ECM connector.

   HINT: 

   Before checking, do visual and contact pressure checks on the ECM connector.

3. Connect the Techstream to the DLC3.
4. Turn the engine switch on (IG).
5. Turn the Techstream on.
6. Enter the following menus: Powertrain / Engine / Data List / Intake Air.
7. Read the value displayed on the Techstream.

   Standard

   Higher than 128°C (262°F)

NG → See step   8 

OK → REPAIR OR REPLACE HARNESS OR CONNECTOR (MASS AIR FLOW METER - ECM) 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the mass air flow meter connector.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG).
4. Turn the Techstream on.
5. Enter the following menus: Powertrain / Engine / Data List / Intake Air.
6. Read the value displayed on the Techstream.

   Standard

   -40°C (-40°F)

NG → See step   5 

OK → See step   9 

1. Disconnect the mass air flow meter connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect the ECM connector.
3. Connect the Techstream to the DLC3.
4. Turn the engine switch on (IG).
5. Turn the Techstream on.
6. Enter the following menus: Powertrain / Engine / Data List / Intake Air.
7. Read the value displayed on the Techstream.

   Standard

   -40°C (-40°F)

NG → See step   10 

OK → REPAIR OR REPLACE HARNESS OR CONNECTOR (MASS AIR FLOW METER - ECM)