Ultrasound distance sensors (631 RL/RLC/RRC/RR)
| Ultrasound distance sensors (631 RL/RLC/RRC/RR) |
Ultrasound distance sensor, centre left (631RLC)
Ultrasound distance sensor, centre right (631RRC)
Ultrasound distance sensor, outer right (631RR)
| Principal use |
The four distance sensors use ultrasound to measure the distance to the object behind the car. They transmit wide angle ultrasound (120° horizontal and 60° vertical) and receive reflected acoustic signals. These signals are converted to digital signals that are conveyed to the control module for calculation of the distance to the closest object.
| Type |
Each distance sensor contains a piezo-electric element with a communication unit. The piezo-electric element acts as both a speaker element and a microphone element. The sensor has a plastic housing and is connected with three wires. The sensor is located in a holder and fastened with two clips. The holder is fastened in the centre decor strip on the rear bumper. The distance sensors are identical and interchangeable.
| Connection |
Ultrasound distance sensor, outer left (631RL)
|
Pin no.
|
Signal type
|
Description
|
| 1 | Communication cable | Connection to control module pin 6 (K12) |
| 2 | Ground | Ground from SPA pin 2 (K12) |
| 3 | Power supply | Power supply from SPA pin 1 (K12) |
Ultrasound distance sensor, centre left (631RLC)
|
Pin no.
|
Signal type
|
Description
|
| 1 | Communication cable | Connection to control module pin 5 (K12) |
| 2 | Ground | Ground from SPA pin 2 (K12) |
| 3 | Power supply | Power supply from SPA pin 1 (K12) |
Ultrasound distance sensor, centre right (631RRC)
|
Pin no.
|
Signal type
|
Description
|
| 1 | Communication cable | Connection to control module pin 4 (K12) |
| 2 | Ground | Ground from SPA pin 2 (K12) |
| 3 | Power supply | Power supply from SPA pin 1 (K12) |
Ultrasound distance sensor, outer right (631RR)
|
Pin no.
|
Signal type
|
Description
|
| 1 | Communication cable | Connection to control module pin 3 (K12) |
| 2 | Ground | Ground from SPA pin 2 (K12) |
| 3 | Power supply | Power supply from SPA pin 1 (K12) |
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