DTC P011B: Engine Coolant Temperature / Intake Air Temperature Correlation [08/2017 - 08/2018]: Procedure

WARNING: This page is about a different car, the 2018 Toyota Sequoia, 2017 Toyota Sequoia, and 2016 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P011B)

Connect the Techstream to the DLC3.
Turn the ignition switch ON.
Turn the Techstream on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

Read DTCs.

RESULT

Result	Proceed to
P011B	A
P011B and other DTCs	B

HINT:

If any DTCs other than P011B are output, troubleshoot those DTCs first.

Result:

GO TO DTC CHART

(Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2017 - 08/2018] )

Result:

See step 2

READ VALUE USING TECHSTREAM (INTAKE AIR TEMPERATURE)
1. Leave the vehicle for 7 hours or more.
  HINT:
  
  It is necessary leave the vehicle for 7 hours or more to allow conditions similar to the DTC detection conditions.
2. Connect the Techstream to the DLC3.
3. Turn the ignition switch ON.
4. Turn the Techstream on.
5. Enter the following menus: Powertrain / Engine and ECT / All Data / Intake Air.
6. Read the value displayed on the Techstream.
  OK
  
  Difference between the intake air temperature and the actual outside air temperature is within 10°C (18°F).
  
  HINT:
  - Temperature readings on the vehicle outside temperature gauge (if equipped) are not suitable for comparing to the IAT reading. The outside temperature gauge has a significant delay built-in to prevent temperature swings from being displayed on its display. Use an accurate thermometer to determine the outside air temperature.
  - Perform "Inspection After Repair" after replacing the mass air flow meter (Refer to INITIALIZATION [08/2017 - 08/2018] ).
Result:

NG

REPLACE MASS AIR FLOW METER

(Refer to REMOVAL [08/2015 - 08/2018] )

Result:

OK

See step 3
READ VALUE USING TECHSTREAM (COOLANT TEMPERATURE)
1. Connect the Techstream to the DLC3.
2. Turn the ignition switch ON.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / All Data / Coolant Temp.
5. Read the value displayed on the Techstream.
  OK
  
  The difference between the coolant temperature and the actual outside air temperature is within 10°C (18°F).
  
  HINT:
  - If the result is not as specified, check that there are heat sources such as a block heater in the engine compartment.
  - Perform "Inspection After Repair" after replacing the engine coolant temperature sensor (Refer to INITIALIZATION [08/2017 - 08/2018] ).
Result:

OK

REPLACE ECM

(Refer to REMOVAL [08/2015 - 08/2018] )

Result:

NG

REPLACE ENGINE COOLANT TEMPERATURE SENSOR

(Refer to REMOVAL [08/2015 - 08/2018] )