DTC P0115, P0117, P0118; Engine Coolant Temperature Circuit [08/2013 - 08/2016]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Coolant Temp.

   Powertrain > Engine and ECT > Data List 

   Tester Display
   Coolant Temp

5. Read the value displayed on the Techstream.

   Standard Value

   Between 75 and 100°C (167 and 212°F) with warm engine.

   Result

   Result	Proceed to
   -40°C (-40°F)	A
   Higher than 135°C (275°F)	B
   Between 75 and 100°C (167 and 212°F)	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 135°C (275°F).

Result:  2

B 

See step  4

Result:  3

C 

CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [08/2013 - ] 

Result:  1

A 

See step  2

1. Disconnect the engine coolant temperature sensor connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Engine Coolant Temperature Sensor	*2	ECM
   *a	Front view of wire harness connector (to Engine Coolant Temperature Sensor)	-	-

2. Connect terminals 1 and 2 of the engine coolant temperature sensor connector on the wire harness side.
3. Connect the Techstream to the DLC3.
4. Turn the ignition switch to ON.
5. Turn the Techstream on.
6. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Coolant Temp.

   Powertrain > Engine and ECT > Data List 

   Tester Display
   Coolant Temp

7. Read the value displayed on the Techstream.

   Standard Value

   Higher than 135°C (275°F)

   HINT: 

   Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.

   Refer to INITIALIZATION [08/2013 - 08/2016]

   Result

   Proceed to
   OK
   NG

Result:  1

OK 

REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to  REMOVAL [08/2013 - ] 

Result:  2

NG 

See step  3

1. Disconnect the engine coolant temperature sensor connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   B4-2 - B33-93 (THW)	Always	Below 1 Ω
   B4-1 - B33-94 (ETHW)	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result:  1

OK 

REPLACE ECM. Refer to  REMOVAL [08/2013 - 08/2016] 

Result:  2

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Disconnect the engine coolant temperature sensor connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Engine Coolant Temperature Sensor
   *2	ECM

2. Connect the Techstream to the DLC3.
3. Turn the ignition switch to ON.
4. Turn the Techstream on.
5. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Coolant Temp.

   Powertrain > Engine and ECT > Data List 

   Tester Display
   Coolant Temp

6. Read the value displayed on the Techstream.

   Standard Value

   -40°C (-40°F)

   HINT: 

   Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.

   Refer to INITIALIZATION [08/2013 - 08/2016]

   Result

   Proceed to
   OK
   NG

Result:  1

OK 

REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to  REMOVAL [08/2013 - ] 

Result:  2

NG 

See step  5

1. Disconnect the engine coolant temperature sensor connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   B4-2 or B33-93 (THW) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result:  1

OK 

REPLACE ECM. Refer to  REMOVAL [08/2013 - 08/2016] 

Result:  2

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR