- a) Disconnect the connector from the parking brake switch and the low brake fluid level switch.
- b) Ground the sensor connector (engaging the parking brake) from the wire side.
- c) Start the engine. Check that the indicator lamp lights up.
- d) If the indicator lamp does not light, check the lamp or the wiring harness.
2. Checking the low brake fluid level sensor
- a) Remove the tank lid and mesh filter.
- b) Disconnect the connector.
- c) Check for continuity between the terminals when the sensor is in the "OFF" position (float in the upper position).
- d) Pump the liquid out of the tank.
- d) Check for continuity between the connector terminals when the sensor is in the "ON" position (float in the lower position).
- e) Pour the liquid back into the tank. If the operation is different from the description, replace the sensor.
3. Checking the parking brake indicator switch.
- a) Check for continuity between the terminals when the sensor is in the "ON" position (button released).
- b) Check for continuity between the terminals when the sensor is in the "OFF" position (button pressed).
The original can be found on this resource: Toyotaman.ru