JAC HFC4DA1-2C engine. Instruction — part 23

GW

GW

GW

GW Power

Power

Power

Power Window

Window

Window

Window

-- 144 --

Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

Installation

Installation

Installation

Installation of

of

of

of window

window

window

window regulator

regulator

regulator

regulator motor

motor

motor

motor

1.

Install the motor.

2.

Connect the harness and install the mounting bolts
of motor.

3.

Install the left front door inner trim.

4.

Install the connecting wire of battery.

JAC Multifunctional Commercial Vehicle Company Sunray series

Power Window

- 145 -

Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

Installation

Installation

Installation

Installation of

of

of

of window

window

window

window regulator

regulator

regulator

regulator switch

switch

switch

switch

1.

Install the window switch.

2.

Connect the harness and install the mounting bolts
of switch.

3.

Install the left front door inner trim.

4.

Install the connecting wire of battery.

GW

GW

GW

GW Power

Power

Power

Power Window

Window

Window

Window

-- 146 --

EM

EM

EM

EM Electric

Electric

Electric

Electric rear-view

rear-view

rear-view

rear-view mirro

mirro

mirro

mirro

- 147 -

Electric

Electric

Electric

Electric rear-view

rear-view

rear-view

rear-view mirro

mirro

mirro

mirro

Applied models: SUNRAY products manufactured by JAC

Subject

Page

Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Electric rear-view mirro. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 148

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Removal

Removal

Removal

Removal and

and

and

and Installation

Installation

Installation

Installation

Electric rear-view mirro. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 149

Removal of rear view mirror. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 149
Removal of rear view mirror switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 150

EM

EM

EM

EM Electric

Electric

Electric

Electric rear-view

rear-view

rear-view

rear-view mirro

mirro

mirro

mirro

- 148 -

Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Rear

Rear

Rear

Rear view

view

view

view mirror

mirror

mirror

mirror

Sunray rear view mirrors is devided into interior rear view mirror and exterior interior rear view mirror. The exterior
rear view mirrors are fixed on the top of front windshield and at left and right outboard sides of vehicle body for
observation of conditions inside and behind the vehicle.

EM

EM

EM

EM Electric

Electric

Electric

Electric rear-view

rear-view

rear-view

rear-view mirro

mirro

mirro

mirro

- 149 -

Removal

Removal

Removal

Removal and

and

and

and Installation

Installation

Installation

Installation

Removal

Removal

Removal

Removal of

of

of

of rear

rear

rear

rear view

view

view

view mirror

mirror

mirror

mirror

1.

Disconnect the connecting wire of battery.

2.

Remove the interior trim panel of the left front
door.

3.

Disconnect the connector plug of the rear view
mirror.

4.

Remove mounting bolts of the rear view mirror and
take down the rear view mirror.

EM

EM

EM

EM Electric

Electric

Electric

Electric rear-view

rear-view

rear-view

rear-view mirro

mirro

mirro

mirro

- 150 -

Removal

Removal

Removal

Removal and

and

and

and Installation

Installation

Installation

Installation

Removal

Removal

Removal

Removal of

of

of

of rear

rear

rear

rear view

view

view

view mirror

mirror

mirror

mirror switch

switch

switch

switch

1.

Disconnect the connecting wire of battery.

2.

Remove the interior trim panel of the left front
door.

3.

Disconnect the connector plug of the switch.

4.

Remove mounting bolts and take down the switch.

HO

HO

HO

HO HORN

HORN

HORN

HORN

- 151 -

H

H

H

Horn

orn

orn

orn

Applied models: SUNRAY products manufactured by JAC

Subject

Page

Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

H

H

H

Horn

orn

orn

orn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

Mounting position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...152

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

H

H

H

Horn

orn

orn

orn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 153

Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

H

H

H

Horn

orn

orn

orn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156

Removal of Horn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156

HO

HO

HO

HO HORN

HORN

HORN

HORN

- 152 -

Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Mounting

Mounting

Mounting

Mounting position

position

position

position of

of

of

of horn

horn

horn

horn

HO

HO

HO

HO HORN

HORN

HORN

HORN

- 153 -

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Troubleshooting

Troubleshooting

Troubleshooting

Troubleshooting

1.

Horn always on.

Step

Operation

Yes

No

1

Is the vehicle equipped with any anti-theft system?

Go to Step 2.

Go to Step 3.

2

Is the vehicle diagnostic system check performed?

Go to Step 4.

Check vehicle

diagnostic system.

3

Is horn operation and other necessary inspection performed?

Go to Step 4.

Check horn harness.

4

Press and then release the horn botton.

Is the horn always on?

Go to Step 5.

Check horn harness.

5

Is the vehicle equipped with any anti-theft system?

Go to Step 6.

Go to Step 7.

6

Disconnect the body control module.

Is the horn always on?

Go to Step 7.

Go to Step 11.

7

Disconnect the horn relay.

Is the horn always on?

Go to Step 10.

Go to Step 9.

8

Check horn relay for poor contact. Is any fault detected and elimilated?

Go to Step 15.

Go to Step 14.

9

Repair the horn relay control circuit that is shorted to ground.

Is the maintenance finished?

Go to Step 15.

—

10

Check harness connector of body control module for poor contact.

Is any fault detected and elimilated?

Go to Step 15.

Go to Step 13.

12

Repair the shorted horn control circuit.

Is the maintenance finished?

Go to Step 15.

—

13

Replace the body control module.

Is the replacement finished?

Go to Step 15.

—

14

Replace the horn relay.

Is the replacement finished?

Go to Step 15.

—

15

Is the horn able to operate normally?

System is normal.

Go to Step 1.

HO

HO

HO

HO HORN

HORN

HORN

HORN

- 154 -

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Troubleshooting

Troubleshooting

Troubleshooting

Troubleshooting

2.

Horn failed to work.

Step

Operation

Yes

No

1

Is the vehicle equipped with any anti-theft system?

Go to Step 2.

Go to Step 3.

2

Is the vehicle diagnostic system check performed?

Go to Step 4.

Check vehicle

diagnostic system.

3

Is horn operation and other necessary inspection performed?

Go to Step 4.

Check horn harness.

4

Press and then release the horn botton.
Is the horn always on?

Check horn harness.

Go to Step 5.

5

1. Disconnect the horn relay.
2. Connect a test lamp between the positive battery voltage circuit of horn

relay coil and a sound ground.

Is the test lamp lit?

Go to Step 6.

Go to Step 13.

6

1. Connect a test lamp between the positive battery voltage circuit of horn

relay coil and the horn relay control circuit.

2. Press the horn button and hold it.
Is the test lamp lit?

Go to Step 7.

Go to Step 14.

7

Connect a test lamp between the positive battery voltage circuit of horn
relay button and a sound ground.
Is the test lamp lit?

Go to Step 8.

Go to Step 15.

8

Connect a jumper with a 15A fuse between the positive battery voltage
circuit of horn relay button and the horn control circuit.
Does the horn ring?

Go to Step 11.

Go to Step 9.

9

1. Reconnect the horn relay.
2. Disconnect the horn connector.
3. Connect a test lamp between the horn control circuit and a sound

ground.

4. Press the horn button and hold it.
Is the test lamp lit?

Go to Step 10.

Go to Step 16.

10

1. Connect a test lamp between the horn control circuit and the horn

ground circuit.

2. Press the horn button and hold it.
Is the test lamp lit?

Go to Step 12.

Go to Step 17.

12

Perform troubleshooting for the high impedence in the horn control circuit
or horn ground circuit.
Is the maintenance finished?

Go to Step 19.

—

13

Perform troubleshooting for the open circuit or high impedence in the
positive battery voltage circuit of horn relay coil.
Is the maintenance finished?

Go to Step 19.

—

14

Perform troubleshooting for the open circuit in horn relay control circuit or
shorted positive battery circuit. Horn relay control circuit is composed of
horn slip ring and horn button.
Is the maintenance finished?

Go to Step 19.

—

15

Perform troubleshooting for the open circuit or high impedence in the
positive battery voltage circuit of horn relay button.
Is the maintenance finished?

Go to Step 19.

—

16

Perform troubleshooting for the open circuit or high impedence in the horn
control circuit.
Is the maintenance finished?

Go to Step 19.

—

17

Perform troubleshooting for the open circuit or high impedence in the horn
ground circuit.
Is the maintenance finished?

Go to Step 19.

—

18

Replace the horn relay.
Is the replacement finished?

Go to Step 19.

—

19

Operate the horn.
Is the horn able to operate normally?

System is normal.

Go to Step 1

HO

HO

HO

HO HORN

HORN

HORN

HORN

- 155 -

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Troubleshooting

Troubleshooting

Troubleshooting

Troubleshooting

3.

Inferior tone quality of horn.

Step

Operation

Yes

No

1

Is the vehicle equipped with any anti-theft system?

Go to Step 2.

Go to Step 3.

2

Is the vehicle diagnostic system check performed?

Go to Step 4.

Check vehicle

diagnostic system.

3

Is horn operation and other necessary inspection performed?

Go to Step 2.

Check horn harness.

4

Press the horn button.

Is there any screak or buzz?

Go to Step 5.

Check horn harness.

5

1. Check the horn for proper mounting torque.

2. Check if there is any fragment at the connecting part between horn and

vehicle.

Is any fault detected and elimilated?

Go to Step 9.

Go to Step 6.

6

Perform procedures below for each horn:

1. Disconnect the horn connector.

2. Connect a jumper with a 15A fuse between the positive battery terminal

of horn and the control circuit of horn.

3. Connect aother jumper between the negative battery terminal of horn

and the grounding terminal of horn.

Is there any screak or buzz?

Go to Step 8.

Go to Step 7.

7

Perform troubleshooting for the high impedence in the horn control circuit
or the horn ground circuit.

Is the maintenance finished?

Go to Step 9.

—

8

Replace the horn.

Is the replacement finished?

Go to Step 9.

—

9

Operate the horn.

Is the horn able to operate normally?

System is normal.

Go to Step 1

HO

HO

HO

HO HORN

HORN

HORN

HORN

- 156 -

Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

Removal

Removal

Removal

Removal of

of

of

of horn

horn

horn

horn

1.

Disconnect the negative cable of battery.

2.

Remove the front bumper.

3.

Remove the mounting bolt of horn and disconnect
the horn plug.

4.

Remove the horn.

AT

AT

AT

AT Air

Air

Air

Air Conditioner

Conditioner

Conditioner

Conditioner

- 157 -

Air

Air

Air

Air Conditioner

Conditioner

Conditioner

Conditioner (A/C)

(A/C)

(A/C)

(A/C)

Applied models: SUNRAY products manufactured by JAC

Subject

Page

Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Air Conditioner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..159
Functional operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 162

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Air Conditioner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

Operating principle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Air distribution system introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 167
Leak test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..168
A/C system performance testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .169
Refrigerant recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
A/C System Performance Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..174
System Testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

Air Conditioner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

Removal of front A/C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Removal of top evaporator tank. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..191
Removal of front condenser. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Removal of bottom condenser. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Removal of heater water tank. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Removal of after motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...198
Removal of compressor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 202
Installation of compressor assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...204
Removal of front A/C panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Removal of rear A/C panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206

Specification

Specification

Specification

Specification

Air Conditioner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

Basic parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .207

AT

AT

AT

AT Air

Air

Air

Air Conditioner

Conditioner

Conditioner

Conditioner

- 158 -

Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

A/C

A/C

A/C

A/C system

system

system

system

SUNRAY adopts dual A/C system, with the front and rear A/C controlled independently. In this system, the front and
rear A/C use independent condenser and evaporator but share the same compressor.

A/C

A/C

A/C

A/C system

system

system

system schematic

schematic

schematic

schematic diagram:

diagram:

diagram:

diagram:

1. Evaporator

2. Expansion valve

3. Compressor

4. Condenser

5. Fluid reservoir

AT

AT

AT

AT Air

Air

Air

Air Conditioner

Conditioner

Conditioner

Conditioner

- 159 -

Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Precautions

Precautions

Precautions

Precautions

1.

Refrigerant is of low freezing point and strong
volatility, so please wear gloves and goggles in
order to avoid frostbite, blindness and other
phenomena caused by its contact with skin.

2.

In case of the refrigerant gets into your eyes or
having contact with skin, please flush the affected
areas with fresh water and go to the doctor for
help. Please don’t rub your eyes with hand or
handkerchief.

3.

The handling of refrigerant shall be performed in
well-ventilated areas.

Although

refrigerant

is

innoxious,

abundant

exhaust of refrigerant into enclosed space may lead
to hypoxia.

4.

During the handling of refrigerant, the ambient
environment shall be free from water and foreign
matters such as dust, for which may cause damage
to A/C system when flowing into. Therefore,
special attention must be paid.