Rain Sensor: Service and Repair

REMOVAL

CAUTION:
The rain sensor may not operate properly if contaminated. Protect the rain sensor surface by not removing the cover until installation time. The coupling pad on the rain sensor surface has adhesive strength. Take care when installing the sensor. If the sensor is separated from the windshield by force, the sensor or windshield may be damaged. Take care when removing the sensor.

1. Remove the sensor cover. When removing it, make sure take care to prevent damage. To remove it, press back the locking hook using the cover hole using an appropriate tool.




2. When removing rain sensor from the bracket, open the spring clip using the (-)driver, and then remove.




3. Disconnect the wiring harness connector from the sensor.
4. Rain sensor is fitted with 2 spring slides by clip type on the front glass, it can be replaced easily. When replacing the front glass, take away the rain sensor from the existing glass.
After then attach it to new one again.

INSTALLATION

NOTE:
- In case of the windshield with reflection layer which reflects the infrared rays in sensing field, remove the reflection layer from the rain sensor mounting position prior to installation.
- Bracket and spring slide need for installing the rain sensor, it is covered by sensor cover.

1. Install the rain sensor bracket to the windshield glass using the tape




2. Rain sensor Installation
The two springs should be closed simultaneously. Once closed, press the housing forward to ensure proper adhesion of the sensor to the windshield.




3. Connect the rain sensor connector, and then install the sensor cover.

CAUTION:
It is very important that the coupling pad pushes against the windshield completely to prevent bubbles from forming at the contact surface.

INSPECTION

1. Wiper blade
Check the wear of wiper blade. If it is excessively worn, wipe out clean to sense the rain amount accurately.
2. Coupler
Ensure the coupler surface on the windshield is free of bubbles. Verify that the coupler is properly positioned.
3. Glass
Check the windshield glass surface beyond the sensing range for the excessive wear, scratch or crack.
Although the sensor compensates for wear to a certain level, sensor fails to sense accurately if it exceeds a certain level. This is confirmed by the self-diagnosis of sensor.
4. Exterior cover
Ensure the exterior cover of the rain sensor is properly installed.
5. Spring clip
Check the spring clip after removal of exterior cover if the rain sensor is disconnected from coupler.
6. Connector
(1) Check the terminal inside the connector and wiring for compression, and check the terminal whether it is inserted and locked correctly.
(2) In addition, check the wiring connector and rain sensor connector for assembly and confirm to prevent poor connection