11.14.5.2  Reverse  Radar  Control  Module
Terminal List

1 2 3

4 5 6 7

8 9 10111213141516

Reverse Radar Control Module Harness 
Connector SO40

FE11-6301b

Terminal ID

Wiring Color

Terminal Descriptions

Status

Specified Conditions

1

- -

Empty

- -

- -

2

R/W

The Right Corner
Sensor Data Output

Gear In Reverse

0-5 V 40 KHz, 50% PWM

3

L/G

Right Middle Sensor
Data Output

Gear In Reverse

0-5 V 40 KHz, 50% PWM

4

Br/R

Left Corner Sensor Data
Input

Gear In Reverse

0-3.5 V

5

L

Buzzer Drive Signal

Trigger Alarm

Data Signals

6

P

Sensor Power Supply

Gear In Reverse

8 V

7

O

Sensor Ground

Always

GND

8

- -

Empty

- -

- -

9

L / Y

Left Corner Sensor Data
Output

Gear In Reverse

0-5V 40 KHz, 50% PWM

10

Gr

Left Middle Sensor Data
Output

Gear In Reverse

0-5V 40 KHz, 50% PWM

11

Y

Right Corner Sensor
Data Input

Gear In Reverse

0-3.5 V

12

W

Right Middle Sensor
Data Input

Gear In Reverse

0-3.5 V

13

R

Left Middle Sensor Data
Input

Gear In Reverse

0-3.5 V

14

- -

Empty

- -

- -

15

B

Control Module Ground

Always

GND

Body Electric

Reverse Radar

11-469

16

R

Control Module Power
Supply

Gear In Reverse

12 V

11-470

Reverse Radar

Body Electric

11.14.6 Diagnostic Information and Procedures
11.14.6.1 Diagnosis Description

Refer to 

11.14.2.1

 

Description and Operation

get familiar with the system functions and operation before start system diagnostics,

so that it will help to determine the correct diagnostic steps, more importantly, it will also help to determine whether the customer
described situation is normal.

11.14.6.2 Visual Inspection

–

Check the installed after market equipment that may affect the reverse radar system operation.

–

Check the easy to access system components to identify whether there is a significant damage or a potential malfunction.

–

Check whether the the reverse radar control module and the wiring harness connectors are installed correctly.

11.14.6.3 Sensor Malfunction Diagnostic

After each ignition cycle, if there is a sensor malfunction, the system will send out corresponding alarm sound, the waveform is
shown as below:

Sensor 

Sound

Turn On 
Power

Normal

Left 
Corner 
Sensor 

Left 
Middle 
Sensor 
Right 
Middle 
Sensor 

Right 
Corner 
Sensor 

(Total Time: +/-10%)

FE11-1209b

11.14.6.4 The System May Not Work Properly Because

1. The sensor external assembly is frozen.

2. Sensor surface has snow or water droplets.

Body Electric

Reverse Radar

11-471

11.14.6.5 The Sensor Detecting Ability May Drop Because

1. The snow or water falls on the sensor probe.

2. Very hot or cold days.

3. There is an obstacle, and its diameter is less than 14 cm (5.5 in) and its length is less than 1 m (39 in).

11.14.6.6 The False Alarm May Be Triggered Because

1. On an uneven road, cobblestone pavement and lawn.

2. The system is close to other ultrasonic sources such as vehicles horn, motorcycle engine noise, commercial vehicle air brake

etc.

3. Heavy rain and water splashing.

4. Close to a radio equipment such as a Walkman and so on.

5. The sensor is covered by snow etc.

11.14.6.7 The System Can Not Detect The Following Objects

1. Objects with sharp corners and ropes.

2. Objects that can absorb ultrasonic, such as cotton, snow and sponges.

11.14.6.8 Possible Scenarios

1. According to vehicle speed and the obstacles shape, alarm levels may not be continuous.

2. When the sensor height and rear bumper changes, or the vehicle towed objects are in the detecting area, the system may send

a false alarm.

3. The system may not detect objects within 30 cm (11.8 in).

4. When the sensor error is detected, check whether the sensor surface is covered by dust, snow, water, etc.. If it is the case,

remove the dust, snow, water, etc from the sensor surface.

5. Avoid sensor surface being squeezed, impacted and scratched and so on.

6. If a vehicle is loaned to others to use, please notify the user of these Notices.

11.14.6.9 Fault Symptom List

Symptoms

Suspected Parts

Refer to Page

System is unable to self-test (buzzer does
not ring)

1. Reverse Radar Control Module Power
Supply Circuit

Refer to 

11.14.6.10

 

System Unable to Self-

test (Buzzer Did Not Ring)

.

2. Harness and Connectors

3. Instrument Cluster

Gear at R, buzzer rings

1. Harness and Connectors

Refer  to 

11.14.6.11

 

Buzzer  Continuously

Ring with Gear at R

.

2. Reverse Radar Control Module

3. Harness and Connectors

4. Reverse Radar Control Module

Self Test Right Corner Sensor Malfunction

1. Sensor

Refer to 

11.14.6.12

 

Self-test Right Corner

Sensor Malfunction

.

2. Harness and Connectors

11-472

Reverse Radar

Body Electric