DTC P00B1-15: Radiator Coolant Temperature Sensor Circuit Short to Battery or Open [08/2020 - ]: Procedure
WARNING: This page is about a different car, the 2025 Toyota RAV4, 2024 Toyota RAV4, 2023 Toyota RAV4, 2022 Toyota RAV4, and 2021 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
- READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS)
*1 No. 2 Engine Coolant Temperature Sensor *2 ECM *a Front view of wire harness connector
(to No. 2 Engine Coolant Temperature Sensor)- - - Disconnect the No. 2 engine coolant temperature sensor connector.
- Connect terminals 1 and 2 of the No. 2 engine coolant temperature sensor connector on the wire harness side.
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Enter the following menus: Powertrain / Engine / Data List / Radiator Coolant Temperature.
Powertrain > Engine > Data List
Tester Display Radiator Coolant Temperature - According to the display on the Techstream, read the Data List.
OK
Techstream Display Specified Condition Radiator Coolant Temperature Higher than 135°C (275°F) Result
Proceed to OK NG
Result:
OK
REPLACE NO. 2 ENGINE COOLANT TEMPERATURE SENSOR. Refer to REMOVAL [08/2020 - 12/2021] , or refer to REMOVAL [12/2021 - 10/2022] , or refer to REMOVAL [10/2022 - ]
Result:
NG
See step 2
- CHECK HARNESS AND CONNECTOR (NO. 2 ENGINE COOLANT TEMPERATURE SENSOR - ECM)
- Disconnect the No. 2 engine coolant temperature sensor connector.
- Disconnect the ECM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition A38-2 - C45-129 (THTW) Always Below 1 Ω A38-1 - C45-130 (ETHT) Always Below 1 Ω A38-2 or C45-129 (THTW) - Other terminals Always 10 kΩ or higher Result
Proceed to OK NG
Result:
OK
REPLACE ECM. Refer to REMOVAL [08/2020 - 12/2021] , or refer to REMOVAL [12/2021 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR