JAC HFC4DA1-2C engine. Service Manual — part 22

SB

SB

SB

SB Seat

Seat

Seat

Seat Belt

Belt

Belt

Belt

- 129 -

Seat

Seat

Seat

Seat Belt

Belt

Belt

Belt

Applied models: SUNRAY products manufactured by JAC

Subject

Page

Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Seat Belt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 130

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Seat Belt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 131

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 131

Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

Seat Belt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 132

Removal of seat belt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 132
Removal of seat belt buckle lock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

SB

SB

SB

SB Seat

Seat

Seat

Seat Belt

Belt

Belt

Belt

- 130 -

Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Seat

Seat

Seat

Seat Belt

Belt

Belt

Belt

The seat belts are assembled on each seats for Sunray. The seat belt is designed to limit the movement of passengers
and protect the passengers when a collision occurs to the vehicle.

Seat Belt

SB

SB

SB

SB Seat

Seat

Seat

Seat Belt

Belt

Belt

Belt

- 131 -

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

T

T

T

Troubleshooting

roubleshooting

roubleshooting

roubleshooting

Fault of driver’s seat belt indicator lamp circuit

Step

Operation

Yes

No

1

①Turn the ignition switch on and the engine switch is off.

Important precautions: When the driver’s seat belt is not fastened, the seat belt

indicator lamp should illuminate.

②Fasten, unfasten the driver’s seat belt and check the seat belt indicator lamp in

instrument panel combination instrument.

When unfasten and fasten the driver’s seat belt, do the corresponding seat belt
indicator lamps illuminate and extinguish?

—

Go to Step 2

3

Replace the instrument panel combination instrument.

Has the replacement operation been completed?

Go to Step 6

—

3

①Turn the ignition switch off.

②Disconnect the connector of left seat belt switch.

③Test if the signal circuit of left seat belt switch is open or high-impedance.

Has the condition been found and corrected?

Go to Step 6

Go to Step 4

4

Test if ground circuit of left seat belt switch is open or high-impedance.

Has the problem been found and resolved?

Go to Step 6

Go to Step 5

5

Replace the left seat belt switch.

Has the replacement operation been completed?

Go to Step 6

—

6

Operate the system to check the maintenance effect.

Has the problem been found and resolved?

The system is

normal

Go to Step 2

SB

SB

SB

SB Seat

Seat

Seat

Seat Belt

Belt

Belt

Belt

- 132 -

Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

Removal

Removal

Removal

Removal of

of

of

of seat

seat

seat

seat belt

belt

belt

belt

1.

Disconnect the connecting wire of battery.

2.

Remove the left front door stepping shield.

3.

Remove the bottom mounting bolts of seat belts.

SB

SB

SB

SB Seat

Seat

Seat

Seat Belt

Belt

Belt

Belt

- 133 -

4.

Remove the B pillar inner trim panel.

SB

SB

SB

SB Seat

Seat

Seat

Seat Belt

Belt

Belt

Belt

- 134 -

Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

Removal

Removal

Removal

Removal of

of

of

of seat

seat

seat

seat belt

belt

belt

belt

5.

Remove the covers of top mounting bolts.

6.

Remove the top mounting bolts.

7.

Remove the bottom mounting bolts.

8.

Remove the seat belt.

SB

SB

SB

SB Seat

Seat

Seat

Seat Belt

Belt

Belt

Belt

- 135 -

Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

Removal

Removal

Removal

Removal of

of

of

of seat

seat

seat

seat belt

belt

belt

belt buckle

buckle

buckle

buckle lock

lock

lock

lock

1.

Disconnect the connecting wire of battery.

2.

Remove the front seat inner lateral panel assembly.

3.

Remove the nuts of lower fastening buckle lock
from cushion frame.

4.

Remove the seat belt buckle locks from seats.

GW

GW

GW

GW Power

Power

Power

Power Window

Window

Window

Window

-135-

Power

Power

Power

Power Window

Window

Window

Window

Applied models: SUNRAY products manufactured by JAC

Subject

Page

Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Power Window. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136

Installation position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Operation Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Power Window. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 138

Removal

Removal

Removal

Removal and

and

and

and Installation

Installation

Installation

Installation

Power Window. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142

Removal of window regulator motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..142
Removal of window regulator switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

GW

GW

GW

GW Power

Power

Power

Power Window

Window

Window

Window

-136-

Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Power

Power

Power

Power Window

Window

Window

Window

Both front door windows for Sunray adopt electric up/down operation. Power window system can lift or lower
windows electrically by turning on the switches on each door trims. The main switch on front door trim at the driver’s
side enables the driver to lift or lower windows at the passenger’s side. Power window system includes power window
switches on each door trims, body control module and power window motors inside each doors. Window glass
regulator assembly is used instead of window motor. If the window motor is required to be replaced, the window glass
regulator must be replaced.

Installation

Installation

Installation

Installation position

position

position

position of

of

of

of power

power

power

power window:

window:

window:

window:

Inside the left/right front doors.

JAC Multifunctional Commercial Vehicle Company Sunray series

Power Window

- 137 -

Instruction

Instruction

Instruction

Instruction and

and

and

and operation

operation

operation

operation

Instructions

Instructions

Instructions

Instructions for

for

for

for power

power

power

power window

window

window

window function

function

function

function

1.

Power window switch.
Power window is controlled by 2 window switches
on front door trims. The window switch at the
driver’s side enables the driver to control windows
at the passenger’s side.

2.

Power window motor.
Permanent-magnetic

reversible

motor

enables

window regulator upper window bracket to move
by the rope wheel mechanism. Connect the battery
positive and negative to both terminals of motor
and enable the motor to rotate towards one
direction. The reverse current flowing to the 2
same connections enables the motor to rotate in
reverse.

3.

Operation mode.

Operation mode of power window includes：
Manual up;
Manual down;
Auto down (only driver side door)

4.

After the ignition switch off, the power window
can still be operated, and cannot be operated when
the following situation occurs:

�

Time for ignition switch off is more than 30
seconds.

�

Any door is opened.

�

Lock the doors from outside.

GW

GW

GW

GW Power

Power

Power

Power Window

Window

Window

Window

-- 138 --

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Troubleshooting

Troubleshooting

Troubleshooting

Troubleshooting

1.

All the door power windows cannot operate.

Step

Operation Method

Yes

No

1

Check if F31 50A fuse of engine compartment fuse block, F29 15A fuse, F7
10A fuse, F12 10A fuse of meter fuse block are disconnected.

Go to Step 8

Go to Step 2

2

Check if the power supply for ETACS is normal

①Turn the ignition switch off and the voltage between Terminal 10 of
ETACS connector M36 and ground is the battery voltage.

②Turn the ignition switch on and the voltage between Terminal 18, Terminal
9 of ETACS connector M37 and ground is the battery voltage.

Go to Step 3

Go to Step 9

3

Check if the ground for ETACS is normal

Turn the ignition switch off and disconnect the ETACS connector. Terminal
19 of connector M36 and ground are conductive.

Go to Step 4

Go to Step 10

4

Check if the operation of power window relay is normal.

①Terminal 2 and 4 of relay are constant power supply.

②After the ignition switch is turned on, the voltage for Terminal 1 of relay is
the battery voltage.

Go to Step 7

Go to Step 5

5

Turn the ignition switch on and check if Terminal 3 of power window relay

grounds.

Go to Step 11

Go to Step 6

6

Check if the harnesses of ETACS and power window relay are conductive.

Terminal 15 of ETACS connector M36 should be conductive with Terminal 3
of relay.

Go to Step 13

Go to Step 14

7

Check if the power supply and ground wire for left front door power window
switch are normal

①Turn the ignition switch on and the battery voltage exists between Terminal
11 of left front door power window switch connector D04 and ground.

②Terminal 10 of left front door power window switch connector D04 and

ground are conductive.

Go to Step 12

Go to Step 15

8

After servicing the fault due to circuit, replace the fuse. Is the fault
eliminated?

Go to Step 2

9

Repair the open or short power supply circuit for ETACS. Is the fault

eliminated?

Go to Step 3

10

Check if the ground circuit for ETACS is open.

Go to Step 4

11

Repair the circuit fault and replace the power window relay. Is the fault
eliminated?

Go to Step 7

12

Replace the left front door power window switch.

13

Replace the ETACS.

Go to Step 7

14

Repair the connecting circuit between ETACS and power window. Is the fault

eliminated?

Go to Step 13

15

Repair the harnesses of left front door power window switch. Is the fault

eliminated?

Go to Step 12

JAC Multifunctional Commercial Vehicle Company Sunray series

Power Window

- 139 -

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Troubleshooting

Troubleshooting

Troubleshooting

Troubleshooting

2.

The left front door power window cannot operate.

Step

Operation Method

Yes

No

1

Check if the output signal from power window main switch is normal

Disconnect the left front door power window motor connector and turn the ignition switch
on. When the power window main switch goes up, the voltage between Terminal 2 of left
front door power window motor connector D08 and ground is the battery voltage, the voltage
between Terminal 1 and ground is 0 V, and it is reverse when going down.

Go to Step 2

Go to Step 3

2

Replace the left front door power window motor.

3

Check if the harness connection between left front door power window switch and motor is
normal.

Go to Step 2

Go to Step 4

4

Repair the harness connector between left front door power window switch and motor. Is the
fault eliminated?

Go to Step 2

GW

GW

GW

GW Power

Power

Power

Power Window

Window

Window

Window

-- 140 --

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Troubleshooting

Troubleshooting

Troubleshooting

Troubleshooting

3.

The right front door power window cannot operate.

Step

Operation Method

Yes

No

1

Check if the output signal from power window main switch is normal

Disconnect the right front door power window motor connector and turn the
ignition switch on. When the right front door power window main switch
goes up, the voltage between Terminal 1 of right front door power window
motor connector D15 and ground is the battery voltage, the voltage of
Terminal 2 is 0 V, and it is reverse when going down.

Go to Step 2

Go to Step 3

2

Replace the right front door power window motor.

3

Check if the conductivity of right front door power window switch is normal

Disconnect the right front door power window switch connector D12 and
check the conductivity between Terminal 4, 6, 8 and Terminal 1, 3. Terminal
1 and 6, Terminal 2 and 8 are conductive when going up. Terminal 3 and 6,
Terminal 1 and 4 are conductive when going down. Terminal 3 and 8,
Terminal 1 and 4 are conductive when no operation.

Go to Step 5

Go to Step 4

4

Replace the right front door power window switch.

5

Check if the harnesses of right front door power window switch and right
front door power window motor are conductive. Terminal 3 and 1 of right
front door power window switch connector D12 are respectively conductive
with Terminal 2 and 1 of right front door power window motor connector
D15.

Go to Step 7

Go to Step 6

6

Repair or replace the harnesses of right front door power window switch and
right front door power window motor. Is the fault eliminated?

Go to Step 7

7

Check if the power supply for replacing right front door power window
switch is normal

Turn the ignition switch on and the voltage between Terminal 6 of right front
door power window switch connector D12 and ground is the battery voltage.

Go to Step 4

Go to Step 8

8

Check if Terminal 1 of the left front door power window switch connector
D04 and Terminal 6 of right front door power window connector D12 are
conductive.

Go to Step 10

Go to Step 9

9

Repair or replace the connecting wire of left front door power window switch
connector and right front door power window switch connector. Is the fault
eliminated?

Go to Step 10

10

Replace the left front door power window switch.

JAC Multifunctional Commercial Vehicle Company Sunray series

Power Window

- 141 -

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Troubleshooting

Troubleshooting

Troubleshooting

Troubleshooting

4.

The auto down function for left front door power window fails.

Step

Operation Method

Yes

No

1

The normal replacement and check operation for left front door power
window switch. Does the auto down function operate?

Go to Step 2

2

Replace the left front door power window switch.

GW

GW

GW

GW Power

Power

Power

Power Window

Window

Window

Window

-- 142 --

Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

Removal

Removal

Removal

Removal of

of

of

of window

window

window

window regulator

regulator

regulator

regulator motor

motor

motor

motor

1.

Disconnect the connecting wire of battery.

2.

Remove the left front door inner trim.

3.

Disconnect the harness connection and remove the
mounting bolts of motor.

4.

Remove the motor.

JAC Multifunctional Commercial Vehicle Company Sunray series

Power Window

- 143 -

Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

Removal

Removal

Removal

Removal of

of

of

of window

window

window

window regulator

regulator

regulator

regulator switch

switch

switch

switch

1.

Disconnect the connecting wire of battery.

2.

Remove the left front door inner trim.

3.

Disconnect the connecting wire and remove the
mounting bolts of switch.

4.

Remove the window switch.