DTC P2182-15: Engine Coolant Temperature Sensor 2 Circuit Short to Battery or Open [10/2022 - ]: Procedure

1. Disconnect the engine coolant temperature sensor (for cylinder head side) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

2. Connect terminals 1 (E2) and 2 (THW2) of the engine coolant temperature sensor (for cylinder head side) connector on the wire harness side.
3. According to the display on the GTS, read the Data List.

   Powertrain > Engine > Data List 

   Tester Display
   Coolant Temperature Sensor2

   OK

   GTS Display	Specified Condition
   Coolant Temperature Sensor2	140°C (284°F) or higher

   HINT: 

   Perform "Inspection After Repair" after replacing the engine coolant temperature sensor (for cylinder head side).

   Refer to INITIALIZATION [10/2022 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ENGINE COOLANT TEMPERATURE SENSOR (FOR CYLINDER HEAD SIDE). Refer to  REMOVAL [10/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

Result: 

NG 

See step  2

1. Disconnect the engine coolant temperature sensor (for cylinder head side) 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
   n8-2 (THW2) - C88-79 (THW2)	Always	Below 1 Ω
   n8-1 (E2) - C88-81 (ETHW)	Always	Below 1 Ω
   n8-2 (THW2) or C88-79 (THW2) - Other terminals	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ECM. Refer to  REMOVAL [10/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR