Toyota 89422-16010
Coolant Temperature Sensor

Disconnection of the negative battery terminal cable must start with a 90-second wait to avoid activating Air Bags and pretensioners in the Coolant Temperature Sensor/Switch (For Computer) servicing process. Users should first remove the air cleaner assembly before disconnecting the engine wire through removal of two clamps. The sensor connector needs to be disconnected while you proceed to take out the engine coolant temperature sensor and its gasket. New installation begins with fitting a gasket on the sensor after which the sensor must be installed following a 20 N.m (204 kgf.cm, 15 ft.lbf) torque guideline before connecting the sensor connector. Complete the procedure by restoring the engine wire clamps, reattaching the air cleaner assembly then ending with connecting the cable to the negative terminal of the battery.

The first step for servicing the Coolant Temperature Sensor/Switch (For Computer) is disconnecting the negative battery cable while waiting at least 90 seconds to avoid Air Bag or seat belt pretensioner activation. To begin the procedure start by disconnecting the air cleaner assembly and the engine wire needs to have the 2 clamps removed. Detach the sensor connector then uninstall the engine coolant temperature sensor together with its gasket from its place. The installation process needs a new gasket mounted on the sensor before its installation with a torque setting at 20 N.m (204 kgf.cm, 15 ft.lbf). After sensor connector installation you should reconnect the engine wire clamps. To finish the procedure reinstall the air cleaner assembly while reattaching the cable to disconnect and initiate procedures where required for system operation.