a) Disconnect the sensor-switch connector. Ground the connector terminal.
b) turn on the ignition: the indicator lamp should light.
2. Checking the operation of the sensor switch.
a) Check for conductivity between the sensor terminal and ground with the engine not running.
The publication is taken from the website: Toyotaman.ru
b) check for conductivity between the sensor terminal and ground when the engine is running.
Note: The sensor contacts open at an oil pressure of 0.2 bar.