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Mazda CX-5 Service & Repair Manual: Rain Sensor

Outline

Function

Rainfall Amount Detection Function

CAUTION:

Initial Setting Function

Sensitivity Adjustment Function


On-board diagnostic function

Construction

Operation

Operation With No Rainfall Contacting Windshield

1. Infrared light is emitted from the LED in the rain sensor towards the windshield.

2. The emitted infrared light reflects off the windshield.

3. The infrared light reflected off the windshield is received by the photodiode in the rain sensor.

4. When the photodiode receives the light, the microcomputer in the rain sensor calculates the rainfall amount from the reflection rate, and sends a windshield wiper control signal to the front body control module (FBCM).


Operation with Rainfall Contacting Windshield

1. Infrared light is emitted from the LED in the rain sensor towards the windshield.

2. Emitted infrared light goes through the windshield and penetrates the rain drops on the windshield.

3. The infrared light which cannot penetrate is reflected off the windshield and is received by the photodiode in the rain sensor.

4. When the photodiode receives the light, the microcomputer in the rain sensor calculates the rainfall amount from the reflection rate, converts this to an electrical signal and sends a windshield wiper control signal to the front body control module (FBCM).


Fail-safe

Sensors, Switches, Relays
...

Rain Sensor Removal/Installation
1. Disconnect the negative battery cable.. 2. Spread open the rain sensor cover in the direction of the arrows (1) and disengage tabs A to remove it. 3. Disconnect the rain sensor connector ...

Other materials:

Operating Tips for Audio System
WARNING Always adjust the audio while the vehicle is stopped: Do not adjust the audio control switches while driving the vehicle. Adjusting the audio while driving the vehicle is dangerous as it could distract your attention from the vehicle operation which could lead to a serious accident. Ev ...

Rear Wiper And Washer Switch Inspection
1. Disconnect the negative battery cable.. 2. Remove the following parts: a. Column cover. b. Wiper and washer switch. 3. Use a tester to measure and verify that the continuity between the rear wiper and washer switch terminals is as indicated in the table. If the continuity is ...

Seat Track Position Sensor Removal/Installation [Two Step Deployment Control System]
1. Switch the ignition to off. 2. Disconnect the negative battery cable and wait for 1min or more.. 3. Remove the front driver’s seat.. 4. Disconnect the connector from the seat track position sensor by pressing the connector tab and pulling out the lock lever in the direction of the arro ...

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