DTC P0097: Intake Air Temperature Sensor 2 Circuit Low; DTC P0098: Intake Air Temperature Sensor 2 Circuit High; 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 engine switch on (IG).
Turn the Techstream on.
Enter the following menus: Powertrain / Engine / Data List / All Data / Intake Air #1 or Intake Air #2.

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: Checking For Open In Wire Harness - MAF Meter Circuit
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 engine switch on (IG).
5. Turn the Techstream on.
6. Enter the following menus: Powertrain / Engine / Data List / All Data / Intake Air #1 or Intake Air #2.
7. Read the value displayed on the Techstream.
  Standard
  
  140°C (284°F) or higher
OK → See step 7

NG: Go to next step
READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN ECM)

Fig 2: Checking For Open In ECM - MAF Meter Circuit
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 engine switch on (IG).
5. Turn the Techstream on.
6. Enter the following menus: Powertrain / Engine / Data List / All Data / Intake Air #1 or Intake Air #2.
7. Read the value displayed on the Techstream.
  Standard
  
  140°C (284°F) or higher
OK → REPAIR OR REPLACE HARNESS OR CONNECTOR

NG → See step 8
READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS)

Fig 3: Checking For Short In Wire Harness
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 engine switch on (IG).
4. Turn the Techstream on.
5. Enter the following menus: Powertrain / Engine / Data List / All Data / Intake Air #1 or Intake Air #2.
6. Read the value displayed on the Techstream.
  Standard
  
  -40°C (-40°F)
OK → See step 9

NG: Go to next step
READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN ECM)

Fig 4: Checking For Short In ECM
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 engine switch on (IG).
5. Turn the Techstream on.
6. Enter the following menus: Powertrain / Engine / Data List / All Data / Intake Air #1 or Intake Air #2.
7. Read the value displayed on the Techstream.
  Standard
  
  -40°C (-40°F)
OK → REPAIR OR REPLACE HARNESS OR CONNECTOR

NG → See step 10
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