JAC HFC4DA1-2C engine. Instruction — part 20

WW

WW

WW

WW Wiper

Wiper

Wiper

Wiper and

and

and

and Washer

Washer

Washer

Washer System

System

System

System

- 97 -

Removal

Removal

Removal

Removal and

and

and

and Installation

Installation

Installation

Installation

Removal

Removal

Removal

Removal of

of

of

of the

the

the

the windshield

windshield

windshield

windshield washing

washing

washing

washing fluid

fluid

fluid

fluid reservoir

reservoir

reservoir

reservoir

1.

Disconnect the connecting wire of battery.

2.

Lift the vehicle.

3.

Remove mounting bolts of the windshield washing
fluid reservoir.

4.

Take out the windshield washing fluid reservoir.

WW Wiper

Wiper

Wiper

Wiper and

and

and

and Washer

Washer

Washer

Washer System

System

System

System

- 98 -

Removal

Removal

Removal

Removal and

and

and

and Installation

Installation

Installation

Installation

Removal

Removal

Removal

Removal of

of

of

of the

the

the

the Wiper

Wiper

Wiper

Wiper washing

washing

washing

washing nozzle

nozzle

nozzle

nozzle

1.

Disconnect the connecting wire of battery.

2.

Pull up the washing nozzle with hand.

3.

Disconnect the water pipe of nozzle.

4.

Take down the washing nozzle.

WW

WW

WW

WW Wiper

Wiper

Wiper

Wiper and

and

and

and Washer

Washer

Washer

Washer System

System

System

System

- 99 -

Specification

Specification

Specification

Specification

Technical

Technical

Technical

Technical parameter

parameter

parameter

parameter

No load

Loaded

4.4N.m

Low speed

High speed

Low speed

High speed

Speed r/min

Current A

Speed r/min

Current A

Speed r/min

Current A

Speed r/min

Current A

45±5

≤2

65±8

≤3.5

≥20

≤5.5

≥45

≤6.8

High speed braking

Low speed braking

Torque N.m

Current A

Torque N.m

Current A

19.6

≤32

27

≤26

Noise

High speed≤60dB(A)

Low speed≤50dB(A)

WW Wiper

Wiper

Wiper

Wiper and

and

and

and Washer

Washer

Washer

Washer System

System

System

System

- 100 -

PT

PT

PT

PT Reversing

Reversing

Reversing

Reversing parking

parking

parking

parking assistance

assistance

assistance

assistance system

system

system

system

- 101 -

Reversing

Reversing

Reversing

Reversing Radar

Radar

Radar

Radar

Applied models: SUNRAY products manufactured by JAC

Subject

Page

Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Reversing Radar. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...102

Mounting position sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 102
Operating principle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Reversing Radar. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...104

Definitions of reversing radar computer pins. . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 106

Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

Reversing Radar. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...108

Removal of the reversing radar computer. . . . . . . . . . . . . . . . . . . . . . . . . . . ...108
Removal of the reversing radar sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

Specification

Specification

Specification

Specification

Reversing Radar. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 111

Basic parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

PT

PT

PT

PT Reversing

Reversing

Reversing

Reversing parking

parking

parking

parking assistance

assistance

assistance

assistance system

system

system

system

- 102 -

Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Reversing

Reversing

Reversing

Reversing radar

radar

radar

radar sensor

sensor

sensor

sensor

There are 4 sensor probes for Sunray reversing radar. With the application of ultrasonic sensor, the distance
measurement of the obstacle and the vehicle can be carried out. In the process of reversing, the buzzer plays a role in
supporting reminding for the driver via beeps with different frequencies.

Mounting

Mounting

Mounting

Mounting position

position

position

position of

of

of

of the

the

the

the reversing

reversing

reversing

reversing radar

radar

radar

radar sensor:

sensor:

sensor:

sensor:

The reversing radar computer is mounted on the rear bumper.

PT

PT

PT

PT Reversing

Reversing

Reversing

Reversing parking

parking

parking

parking assistance

assistance

assistance

assistance system

system

system

system

- 103 -

Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Operating

Operating

Operating

Operating principle

principle

principle

principle of

of

of

of the

the

the

the reversing

reversing

reversing

reversing radar

radar

radar

radar

1.

Schematic diagram of reversing radar system

2.

Schematic

diagram

of

ultrasonic

distance

measurement

3.

The reversing radar controller sends ultrasonic
signals to the sensor in order to drive the sensor for
ultrasonic wave generation; Ultrasonic signals are
received by the sensor via obstacle reflection and
the internal circuit of the sensor amplifies the
reflected signals and sends them to the controller.
After analysis and calculation of the controller, the
distance information of obstacle is processed by the
controller and the buzzer is driven to beep. For
obstacles at different distances from the vehicle,
the buzzer is controlled by the controller to beep in
different frequencies thus to remind the driver of
obstacles.

4.

Factors which may affect the operation of reversing
radar:

�

Temperature

�

Air pressure

�

Humidity

Sensor

Sensor

Sensor

Sensor

Buzzer

Controller

assembly

Display (reserved)

O

b

st

ac

le

PT

PT

PT

PT Reversing

Reversing

Reversing

Reversing parking

parking

parking

parking assistance

assistance

assistance

assistance system

system

system

system

- 104 -

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Test

Test

Test

Test

Definitions

Definitions

Definitions

Definitions of

of

of

of reversing

reversing

reversing

reversing radar

radar

radar

radar computer

computer

computer

computer pins

pins

pins

pins

1.

Control logic

In the case of no fault in sensor, the buzzer 2HZ beeps once; in the case of one or more faulted sensors, the buzzer 2HZ beeps twice and
then turns into normal distance measurement.

Distance

0-30

﹥30-60

﹥60-90

﹥90-180

﹥180

Beeping frequency of the buzzer

ON

8HZ

4 HZ

2 HZ

OFF

2.

Definitions of control module interfaces

Connector figure

Pin

Signal name

Function

1

R-SHIFT

Reversing signal

2

NC

3

NC

4

S-CR

Right intermediate

probe

5

NC

6

NC

7

S-L

Left probe

8

S-CL

Left intermediate

probe

9

NC

10

NC

11

NC

12

NC

13

DATA

Data display

14

Buzzer

Control signal of

buzzer

15

S-R

Right probe

16

GND

Ground

3.

Probe interfaces

Connector figure

Pin

Current

Function

1

0.1

Power supply

2

0.1

Ground

PT

PT

PT

PT Reversing

Reversing

Reversing

Reversing parking

parking

parking

parking assistance

assistance

assistance

assistance system

system

system

system

- 105 -

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Test

Test

Test

Test

Definitions

Definitions

Definitions

Definitions of

of

of

of reversing

reversing

reversing

reversing radar

radar

radar

radar computer

computer

computer

computer pins

pins

pins

pins（continued

continued

continued

continued）

4.

Buzzer connectors

Connector figure

Pin

Current

Function

1

0.1

Ground

2

0.1

Power supply

PT

PT

PT

PT Reversing

Reversing

Reversing

Reversing parking

parking

parking

parking assistance

assistance

assistance

assistance system

system

system

system

- 106 -

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Test

Test

Test

Test

Possible

Possible

Possible

Possible conditions

conditions

conditions

conditions for

for

for

for the

the

the

the out

out

out

out of

of

of

of operation

operation

operation

operation reversing

reversing

reversing

reversing radar

radar

radar

radar

1.

Verify whether there is snow or mud on radar
probes.

2.

Verify whether the surface of the radar probe is
frozen.

3.

Verify whether the obstacles approaching are thin
objects like iron wires, ropes and mesh walls.

4.

Verify whether the obstacles approaching are too
low.

PT

PT

PT

PT Reversing

Reversing

Reversing

Reversing parking

parking

parking

parking assistance

assistance

assistance

assistance system

system

system

system

- 107 -

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Test

Test

Test

Test

Possible

Possible

Possible

Possible conditions

conditions

conditions

conditions for

for

for

for the

the

the

the reversing

reversing

reversing

reversing radar

radar

radar

radar false

false

false

false alarms

alarms

alarms

alarms

1.

The vehicle is running downward from steep hills.

2.

The vehicle is equipped with the radio or antenna
with high output and these equipments are in
operation.

3.

Other vehicles with honk, motorcycles with engine
noise and objects with noise of exhaust brake are
approaching the vehicle.

4.

The vehicle is running in jelly snow or rain.

PT

PT

PT

PT Reversing

Reversing

Reversing

Reversing parking

parking

parking

parking assistance

assistance

assistance

assistance system

system

system

system

- 108 -

Removal

Removal

Removal

Removal and

and

and

and Installation

Installation

Installation

Installation

Removal

Removal

Removal

Removal of

of

of

of the

the

the

the reversing

reversing

reversing

reversing radar

radar

radar

radar computer

computer

computer

computer

1.

Disconnect the negative cable of battery.

2.

Remove the rear seat.

3.

Remove the trim panel at the left rear side of the
vehicle.

4.

Remove mounting bolts of the reversing radar.

PT

PT

PT

PT Reversing

Reversing

Reversing

Reversing parking

parking

parking

parking assistance

assistance

assistance

assistance system

system

system

system

- 109 -

Removal

Removal

Removal

Removal and

and

and

and Installation

Installation

Installation

Installation (continued)

(continued)

(continued)

(continued)

Removal

Removal

Removal

Removal of

of

of

of the

the

the

the reversing

reversing

reversing

reversing radar

radar

radar

radar

5.

Disconnect the connecting wire of the reversing
radar computer.

6.

Take out the reversing radar.

PT

PT

PT

PT Reversing

Reversing

Reversing

Reversing parking

parking

parking

parking assistance

assistance

assistance

assistance system

system

system

system

- 110 -

Removal

Removal

Removal

Removal and

and

and

and Installation

Installation

Installation

Installation

Removal

Removal

Removal

Removal of

of

of

of the

the

the

the reversing

reversing

reversing

reversing radar

radar

radar

radar sensor

sensor

sensor

sensor

1.

Disconnect the connecting wire of battery.

2.

Remove the rear bumper.

3.

Disconnect the connecting wire of probe.

4.

Screw out the probe.

PT

PT

PT

PT Reversing

Reversing

Reversing

Reversing parking

parking

parking

parking assistance

assistance

assistance

assistance system

system

system

system

- 111 -

Specification

Specification

Specification

Specification

Basic

Basic

Basic

Basic parameter

parameter

parameter

parameter of

of

of

of the

the

the

the reversing

reversing

reversing

reversing radar:

radar:

radar:

radar:

Technical

Technical

Technical

Technical parameter

parameter

parameter

parameter of

of

of

of the

the

the

the control

control

control

control module:

module:

module:

module:

Rated operating voltage

DC12V

Range of operating voltage

DC9V～16V

Operating temperature

-30～+80℃

Storage temperature

-40～+85℃

Operating frequency

58KHz

Max.detection distance

For intermediate probe180cm；For left/right probe 60cm

Technical

Technical

Technical

Technical parameter

parameter

parameter

parameter of

of

of

of the

the

the

the probe:

probe:

probe:

probe:

Rated operating voltage

DC12V

Range of operating voltage

DC9V～16V

Operating temperature

-30～+80℃

Storage temperature

-40～+85℃

Operating frequency

58KHz

Detection angle

Horzontal 80°,vertical 34°

Technical

Technical

Technical

Technical parameter

parameter

parameter

parameter of

of

of

of the

the

the

the buzzer:

buzzer:

buzzer:

buzzer:

Rated voltage

DC12V

Operating voltage

DC9V～16V

Operating temperature

-30℃～+80℃

Storage temperature

-40℃～+85℃

Sound level of

the buzzer

≥90dB～105dB/10cm/12V(min)

Frequency of the buzzer

2.9±0.3kHz

PT

PT

PT

PT Reversing

Reversing

Reversing

Reversing parking

parking

parking

parking assistance

assistance

assistance

assistance system

system

system

system

- 112 -