DTC P00AC: Intake Air Temperature Sensor 1 Circuit Low Bank 2; DTC P00AD: Intake Air Temperature Sensor 1 Circuit High Bank 2; DTC P0112: Intake Air Temperature Circuit Low Input; DTC P0113: Intake Air Temperature Circuit High Input: Procedure

READ VALUE USING TECHSTREAM (INTAKE AIR TEMPERATURE)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream ON.
Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Intake Air Temp B1S1 or Intake Air Temp B2S1.

Read the value displayed on the Techstream.

Standard

Same as actual Intake Air Temperature (IAT).

RESULT

Temperature Displayed	Proceed to
-40°C (-40°F)	A
140°C (284°F) or higher	B
Same as actual IAT	C

HINT:

If there is an open circuit, the Techstream indicates -40°C (-40°F).
If there is a short circuit, the Techstream indicates 140°C (284°F) or higher.

B → See step 4

C → See step 6

A: Go to next step

READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS)

Fig 1: Identifying E13 Or E22 MAF Meter Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the E13 or E22 MAF meter connector.
2. Connect terminals THA and E2 or THAR and E2R of the MAF meter wire harness side connector.
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 / All Data / Intake Air Temp B1S1 or Intake Air Temp B2S1.
7. Read the value displayed on the Techstream.
  Standard
  
  140°C (284°F) or higher
NG → See step 3

OK → See step 7
READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN ECM)

Fig 2: Identifying E13 Or E22 MAF Meter Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the E13 or E22 MAF meter connector.
2. Connect terminals THA and E2 or THA2 and E2 of the E1 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 power switch on (IG).
5. Turn the Techstream ON.
6. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Intake Air Temp B1S1 or Intake Air Temp B2S1.
7. Read the value displayed on the Techstream.
  Standard
  
  140°C (284°F) or higher
NG → See step 8

OK → REPAIR OR REPLACE HARNESS OR CONNECTOR
READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS)

Fig 3: Identifying E13 Or E22 MAF Meter Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the E13 or E22 MAF meter 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 / All Data / Intake Air Temp B1S1 or Intake Air Temp B2S1.
6. Read the value displayed on the Techstream.
  Standard
  
  -40°C (-40°F)
NG → See step 5

OK → See step 9
READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN ECM)

Fig 4: Identifying E13 Or E22 MAF Meter Connector And E1 ECM Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the E13 or E22 MAF meter connector.
2. Disconnect the E1 ECM connector.
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 / All Data / Intake Air Temp B1S1 or Intake Air Temp B2S1.
7. Read the value displayed on the Techstream.
  Standard
  
  -40°C (-40°F)
NG → See step 10

OK → REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS
CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE MASS AIR FLOW METER. Refer to REMOVAL
CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM. Refer to REMOVAL
REPLACE MASS AIR FLOW METER. Refer to REMOVAL
REPLACE ECM. Refer to REMOVAL