JAC HFC4DA1-2C engine. Service Manual — part 17

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ETACS

ETACS

ETACS Body

Body

Body

Body Computer

Computer

Computer

Computer

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Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Service

Service

Service

Service

S/N

Function

Service Methods and Phenomena

1

Warning-off

a．Press “Learning” key on decoder and the fault lamp lightens.
b．If you press the “Warning-off” switch on the remote control, the fault lamp shall go out; if you
press “Unlock” switch in 8 sec, the fault lamp shall flicker twice and then go out with the door latch
unlocked; if you press the “Lock” switch on the remote control, the fault lamp shall lighten and then
go out with door latch locked and power window auto rising.
c．At this time, if you open the left door, the front ceiling lamp, ignition key hole lamp and anti-theft
relay shall operate with intermittent flickering of fault lamp and alarm sound; if you close the left
door and press the “Lock” key on the remote control, the interior lamp and ignition key hole lamp
shall go out and the anti-theft relay shall stop operating, with fault lamp and alarm off, power
window auto rising on, door latch locked.

2

Detection of ignition

switch and power window

With the ignition switch turned to “ON” position, the power windows are operable and the seat belt
indicator flickers.

3

Back window defogging

detection

With the generator turned on, the rear defogging device shall operate once the switch is pressed and
shall stop operation once it is pressed again. With the generator turned off, the rear defogging shall
stop.

4

Front washer detection

Press the front washer switch for 1 sec and release it. Check if the wiper stops after operating for 2
sec.

5

Front wiper delay

detection

With the ignition key in and front wiper intermittent switch pressed, check the operating cycle of
front wiper. If you press the front wiper regulating switch, the front wiper operating cycle shall be
lengthened. Release the wiper intermittent switch and wiper regulating switch, and then turn off the
ignition switch.

6

Driver side door (left

door) detection

If you open the driver side door, the front ceiling lamp and ignition key hole lamp shall lighten; if
you close the door, the front ceiling lamp shall go out gradually and the ignition key hole lamp shall
go out in 6 sec.

7

Front passenger side door

(right door) detection

Same as the driver side door detection.

8

Middle door detection

If you open the middle door, the front ceiling lamp and step lamp shall lighten; if you close the door,
the step lamp shall go out and the front ceiling lamp shall go out gradually.

9

Seat belt detection

With the ignition switch turned to “ON” position, if the seat belt is unfastened, the seat belt indicator
shall flicker 10 times with buzzer ringing 10 times.

10

Detection of lamps

With the driver side door open, small lamp switch on and key inserted, the small lamps and front
ceiling lamp lighten; with key pulled out, the small lamps go out.
With ignition switch turned to “ON” position, small lamp switch and front fog lamp switch on, rear
fog lamps lighten once the switch is pressed and they go out once the switch is pressed again. With
rear fog lamps on, they go out once the front fog lamp switch is turned off. Then if the small lamp
switch is turned off and headlamp switch is turned on, rear fog lamps are operable separately without
the front fog lamp switch on. With lighting lamp reset, front fog lamps, rear fog lamps and small
lamps go out.

11

Door latch detection

If the left front door latch is locked, all door latches inside shall be locked; if the left front door latch
is unlocked, all door latches inside shall be unlocked. It is the same for the right front door latch.

12

Auto unlocking

With door latch locked and ignition key pulled out, the door latch shall be unlocked.

13

40Km auto locking

With the ignition switch turned to “ON” position, if the vehicle speed exceeds 40Km/h, the door
latch shall be locked automatically.

14

Warning detection

a．With ignition switch turned off and ignition key pulled out, if you open the middle door, the front
ceiling lamp and step lamps shall lighten; if you press “Lock” key, the locking lamp shall lighten and
then go out, with power window auto rising. If you close the middle door, the front ceiling lamp and
step lamps shall go out and the fault lamp shall lighten and then go out.
b．If you open and then close the left door, the front ceiling lamp and ignition key hole lamp shall
lighten and the anti-theft relay shall operate with intermittent flickering of fault lamp and alarm
sound; if you press “Lock” key, door latch shall be locked, fault lamp shall lighten and then go out,
and power window shall rise automatically.
c．It is the same for right door.
d．If you open the middle door, the front ceiling lamp and step lamps shall lighten and the anti-theft
relay shall operate with intermittent flickering of fault lamp and alarm sound; if you close the middle
door, the step lamps shall go out; if you press “Lock” key, door latch shall be locked, fault lamp shall
lighten and then go out, and power window shall rise automatically.

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Body Computer

Computer

Computer

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Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

ETACS

ETACS

ETACS

ETACS Pin

Pin

Pin

Pin Definition

Definition

Definition

Definition

Port No.

Port Name

Input/Output

Initial Status

Operating Status

Remark

A1

Interior lamp

Output

High level

Low level

A2

Anti-theft relay

Output

High level (NC)

Low level

Reserved

A3

Front wiper relay

Output

High level

Low level

A4

Rear defroster relay

Output

High level

Low level

A5

Seat belt warning lamp

Output

High level

Low level

A6

Rear fog lamp relay

Output

High level

Low level

A7

Step lamps

Output

NC

Low level

A8

Door locking relay

Output

High level

Low level

A9

A10

B+

A11

Door unlocking relay

Output

High level

Low level

A12

Middle door switch

Input

NC (door closed)

Low level (door

open)

A13

Small lamp relay

Output

High level

Low level

A14

Anti-theft alarm bell

Output

High level

Low level

Reserved

A15

Power window relay

Output

High level

Low level

A16

A17

Front passenger side door switch

Input

NC

Low level

A18

Hazard warning lamp relay

Output

High level

Low level

A19

Ground

A20

Key hole lamp

Output

High level

Low level

A21

A22

A23

(White)

(Gray)

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- 51 -

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

ETACS

ETACS

ETACS

ETACS Pin

Pin

Pin

Pin Definition

Definition

Definition

Definition (Continued)

(Continued)

(Continued)

(Continued)

Port No.

Port Name

Input/Output

Initial Status

Operating Status

Remark

A24

Vehicle speed signal

Input

NC

Pulse

B1

Driver side door switch

Input

NC

Low level

B2

Rear fog lamp switch

Input

NC

Low level

B3

Left/right front window relay

Output

NC

Low level

B4

Front water sprayer switch

Input

NC

Low level

B5

Front passenger side door lock

switch

Input

NC

Low level

B6

Hand brake switch

Input

NC

Low level

B7

Rear defroster switch

Input

NC

Low level

B8

Front fog lamp switch

Input

NC

Low level

B9

IG2

Input

NC

High level

B10

Door switch

Input

NC

Low level

B11

Key insertion switch

Input

NC

High level

B12

Headlamp switch

Input

NC

Low level

B13

Small lamp switch

Input

NC

Low level

B14

Driver side door lock switch

Input

NC

Low level

B15

Middle door locking device

Input

NC (locked)

Low level (unlocked)

B16

Seat belt switch

Input

NC

Low level

B17

Storage code

Input

NC

Pulse

B18

IG1

Input

NC

High level

B19

Front wiper intermittent switch

Input

NC

Low level

B20

B21

Airbag signal

Input

NC

Low level

B22

Front wiper interval adjustment

Input

B23

Generator L

Input

NC

High level

B24

External antenna

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- 52 -

Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

Removal

Removal

Removal

Removal of

of

of

of ETACS

ETACS

ETACS

ETACS

1.

Disconnect the negative cable of battery.

2.

Remove the glove box.

3.

Remove the mounting bolts from body computer.

4.

Disconnect the harness connector of controller and
remove the body computer.

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Computer

Computer

- 53 -

Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

Installation

Installation

Installation

Installation of

of

of

of ETACS

ETACS

ETACS

ETACS

1.

Connect the harness connector of controller.

2.

Tighten the mounting bolts of body computer.

3.

Install the glove box.

4.

Connect the battery cable.

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- 54 -

Specification

Specification

Specification

Specification

Parameters

Parameters

Parameters

Parameters

Electrical Parameter

Requirement

Operating voltage

DC12V

Operating voltage range

DC9V～DC16V

Quiescent current

＜10mA

Insulating resistance

100MΩ (DC500V megger)

Remote control transmitting frequency

315MHz±0.075MHz

Receiving frequency of body controller

315MHz±100KHz

Remote control distance

20M dead zone free

Operating temperature

at -30ºC～+85ºC

Storage temperature

at -40ºC～+90ºC

Relative humidity

≤95%

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Lighting

Lighting

Lighting

Lighting System

System

System

System

Applied models: SUNRAY products manufactured by JAC

Subject

Page

Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 56
Lighting configuration table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Introduction to functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...59

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Fault diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 62

Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

Removal of headlamp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 76
Removal of clearance lamps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Removal of front fog lamps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 78
Removal of ceiling lamps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Removal of rear tail lamps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Removal of high-mounted brake lamp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Removal of rear fog lamp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Specification

Specification

Specification

Specification

Lighting System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Basic parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...83

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Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Lighting

Lighting

Lighting

Lighting system

system

system

system

SUNRAY front lamps (headlamps) are installed on both sides of vehicle head, for lighting when driving at night.
Fog lamps are installed on head positions lower than headlamps, for roadway lighting when driving in rainy or foggy
days. Light color of fog lamp is required to be yellow or orange, for yellow is of longer optical wave and excellent fog
penetrating capability.

Headlamps

Headlamps

Headlamps

Headlamps

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Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Tail

Tail

Tail

Tail lamps

lamps

lamps

lamps

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Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Lighting

Lighting

Lighting

Lighting configuration

configuration

configuration

configuration table

table

table

table

S/N

Name

Qty. (For single vehicle)

1

Rear ceiling lamp assembly

2

2

Front ceiling lamp assembly

1

3

Left front courtesy lamp

1

4

Right front courtesy lamp

1

5

License plate lamp assembly

2

6

Left side turn signal lamp

1

7

Right side turn signal lamp

1

8

Left front fog lamp assembly

1

9

Right front fog lamp assembly

1

10

Left rear fog lamp assembly

1

11

Right rear fog lamp assembly

1

12

Left front combination lamp assembly

1

13

Right front combination lamp assembly

1

14

Left rear combination lamp assembly

1

15

Right rear combination lamp assembly

1

16

High-mounted brake lamp assembly

1

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Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Introduction

Introduction

Introduction

Introduction to

to

to

to functions

functions

functions

functions

1.

Position switch.
Rotate the cylinder at the end of multifunctional

switch lever to the first position to turn on small
lamps,

tail

lamps,

license

plate

lamps

and

instrument panel lamp.

2.

Headlamp switch.
Rotate the cylinder at the end of multifunctional
switch lever to the first position to turn on small
lamps,

tail

lamps,

license

plate

lamps

and

instrument panel lamp.
Rotate it to the second position to turn on
headlamps.

3.

Turn signal lamp switch.
Turn signal lamps only operate when the ignition

switch is turned on.
To turn right, pull up the turn signal lamp switch
lever.
To turn left, push down the turn signal lamp switch
lever.

4.

High beam switch.
To turn on high beam of headlamp, push the
control

lever

forward

(direction

away

from

yourself) with headlamp on, the high beam lightens
with high beam indicator on the instrument on. To
switch to low beam, pull the control lever
backward.

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Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Introduction

Introduction

Introduction

Introduction to

to

to

to functions

functions

functions

functions

5.

Front fog lamp switch.
Turn the headlamp switch knob to position lamp,
press the front fog lamp switch knob, and the front
fog lamp lightens.

6.

Rear fog lamp switch.
Turn the headlamp switch knob to position lamp,
press the front fog lamp switch knob and then the
rear fog lamp switch knob, and the rear fog lamp
lightens.

7.

Rear ceiling lamp switch.
Press the rear ceiling lamp switch and the rear
ceiling lamp lightens.

8.

Front ceiling lamp switch.
OFF: Ceiling lamp off.
DOOR: Ceiling lamp on with door open.
ON: Ceiling lamp normally on.

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Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Introduction

Introduction

Introduction

Introduction to

to

to

to functions

functions

functions

functions

9.

Hazard warning lamp switch.
If you press the hazard warning lamp switch, turn
signal lamps on both sides and instrument indicator
shall lighten.

10. Headlamp flickering.

To make the headlamp flicker, pull the switch
towards yourself and release it.
Even though the headlamp switch is located at
“OFF” position, the headlamp flickering can still
be achieved.

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Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Fault

Fault

Fault

Fault diagnosis

diagnosis

diagnosis

diagnosis

1.

Front fog lamp diagnosis

Step

Operation

Yes

No

1

①Turn on the ignition switch and set the headlamp to “position lamp” position.

②Does the front fog lamp lighten when it is turned on?

Go to Step 2.

Check circuit.

2

Does the front fog lamp indicator in combination instrument lighten?

System is normal.

Go to Step 3.

3

①Turn off the fog lamps.

②Turn off the ignition switch.

③Remove the combination instrument.

④Using the multimeter as a ohmmeter, measure the circuit resistance. Is the

reading below 1 Ohm？

Replace

combination

instrument.

Repair fault

circuit.

4

①Check if the system operates normally.

②Does the system operate normally?

System is normal.

Go to Step 1.

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Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Fault

Fault

Fault

Fault diagnosis

diagnosis

diagnosis

diagnosis

2.

Turn signal indicator diagnosis

Step

Operation

Yes

No

1

Turn on the ignition switch and press the hazard warning lamp switch.

Are front/rear left/right turn signal lamps flickering continuously?

Go to Step 2.

Go to Step 5.

2

Are left/right turn signal indicators flickering continuously?

Go to Step 3.

Check circuit.

3

Turn on the ignition switch and set the turn signal lamp switch to left/right
turning position.

Does left/right turn signal indicator flicker as expected?

Go to Step 4.

Go to Step 6.

4

Turn on the ignition switch and set the turn signal lamp switch to left/right
turning position.

Does left/right turn signal indicator in combination instrument flicker as
expected?

System is normal.

Go to Step 8.

5

Connect the temporary vehicle ground to body control module terminal.

Does the hazard warning lamp flicker as expected?

Hazard warning

lamp operates

normally.

Check body

computer.

6

Use multimeter to measure the voltage of flasher relay.

Does the multimeter indicate the battery voltage?

Replace flasher

relay.

Check circuit.

7

Use multimeter to measure the circuit voltage of turn signal lamp.

Does the multimeter indicate the battery voltage?

Check circuit.

Check circuit.

8

①Turn off the hazard warning lamp.

②Turn off the ignition switch.

③Remove the combination instrument.

④Use the multimeter to measure the circuit resistance. Is the reading below 1
Ohm？

Replace

combination

instrument.

Repair circuit.

9

①Check if the system operates normally.

②Does the system operate normally?

System is normal.

Go to Step 1.

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Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Fault

Fault

Fault

Fault diagnosis

diagnosis

diagnosis

diagnosis

3.

High-mounted brake lamp failed

Step

Operation

Yes

No

1

Is the fuse blown out?

Go to Step 4.

Go to Step 2.

2

Connect the test lamp with two terminals of brake signal lamp switch. Does
the test lamp lighten?

Go to Step 5.

Go to Step 3.

3

①Connect the test lamp with two terminals of high-mounted brake signal

lamp.

②Depress the brake pedal to check if the test lamp lightens?

Go to Step 6.

Go to Step 7.

4

Replace fuse.

5

Replace brake signal lamp switch.

6

Replace high-mounted brake signal lamp.

7

Repair the circuit of poor contact.