Chery Fora (Elara A520). Manual — part 189

Manual A/C System Circuit Analyse：

The manual A/C is shown as figure13-1. When the ignition switch is at

the position of ON, the ACC1 and the 15th line get electricity.

The 15th line

power to the A20 pin of A/C controller .

lower peed djusting esistance

The two ends o f blower motor and h igh speed relay contact point （the

3rd、4th ） parallel connected, the high speed relay coil （ the 2nd p in）
connect to the B1 pi n of A/C c ontroller, when the high speed relay coil get
electricity, the conta ct

. The volta ge of the 3 0th line FB13 bl ower

relay coil

blower motor connect to ground. Then the blo wer motor will

run in high speed .

lower peed djusting e sistance

lower peed djusting

esistance

lower peed djust ing esistance

The A9、A12 pin of A/C controller

to the inner/o uter

circulation control motor, the control pa nel drive the circulation wind door
connecting bar、shi ft lever by controlling the inner/outer circulation servo
motor so as to drive the movement of the large、small wind door and realize
the control of inner/o uter circulation wind.

The A13、A14 pin of A/C controller

to the cool/warm

control mo tor, the c ontrol panel drive the conne cting bar、 shift lever of
temperature adjusting control mechani sm by controlling the blend door
servo moto r so as to drive the movement of the blend door and realize the
mixture of different ratio of air and gas.

The A18、 A1 9 pin of A/C controller

to the mode

control mo tor, the control panel drive the connecting bar、 shift lever of
wind direc tion adjusting control mechan ism by co ntrolling the mode wind
door servo motor, different shift lever control the open and cl ose of diffe rent
wind door and thereb y realize the control of air.

supplies

The ACC1 line supplies power to t he blower relay coil; the blower

relay coil g et electricity and the contact closed, the voltage of the 30th
line→FB13→blower relay contact point→blower motor→the 2nd pin of
b

s

a

r

.

closed

→

→

→

→

The 3 rd pin of t he b

s

a

r

is connectt ed to

the B4 pin of A/C controlle r, the 1st pin of b

s

a

r

is connec tted to the B2 pin of the A/C controller, the 4th pin of

b

s

a

r

are connectted to the B3 pin of the A/C

controller, the running speed of the blower motor is controlled by A/C
controller.

are connectted

are connectted

are connectted

connectted

Switch

The A3 pin o f A/C controller is

to the A/C Pressure

.

Figure13-1 Air Conditioning System Circuit Diagram

-

+

-

+

-

+

-

A9

A12

A14 A13 A6 A15 A2

A18 A19 A 4 A8 A1

A20

A 11

A10

A7

A3

A5

E4

E 2

D 1 D3 D6 D2 D5

C5

C2

C6

C3

C1

In tern al&external

Cir culation cont rol Mot or

Mode control Motor

Blowe r spe ed

adjusting r esistance

3

1

4

R3

R2

R1

2

B5

B 6

B1

B4

B2

B3

2

1

3

4

Blower

High

sp ee d

Rela y

Ground

+

B

Fuse bos /L/14#
IP1/A4

A/C 11

Blower

Relay

FB13

30A

FB7

5A

Fuse box /G/20#

R/L

A/C 4

B

W

T O ECU75#

TO ECU 60#

A/C

pres sure

Switch

A/C 7

Y/G

30
15

ACC1
ACC2

31

IL LU M

A/C S witch

A/C 6

Temperature Control

Motor

ECU /E

IP1/B6

A/C 12

R

Br

A/C press ure S witch

F7

A/C

15th line power fuse

A/C

Blower fuse

F 13

Front Eng ine Compartment Fuse Box

Mode Con trol Motor

Temperature Control Motor

Manual A/C System

2 6

Front ISU System

Figure14-1 Front ISU System Circuit Diagram

F

8

A25

Fr ont

Gr ound/

Left 2/8

Front

Ground/

Right

Front/5

Front Ground/
Front Engine

Compartment
/13

Front Ground/
Front Engine

Compartment
/16

To

Hazard Warning

Lamp

Switch 6#

I nstr ument /Fr ont

G rou nd / 11

V

C4

A2

To

Inst rumen t

31#

To ig nit io n

swi tc h 3 #

F ront

Ground/

In strument /A1

To

ACC Relay

A15

Gr

G

To

Wip er

S witc h3 #

1

6

4

5

2

FROM
FRONT
LEFT TURN

A3

Hazard Switch

F12

7.5A

From
illum line

B5

A8

A4

B3

B24

C12

C15 A28

Ground
CAN_H

CAN_L

Front ISU

Anti-theft
Horn

30

15

ACC1

ACC2

31
ILLUM

M

ON

OFF

ON

OFF

FB26

10A

FB25
10A

A19

(2.5ko)

H/LP

LEVEL'G

DEVICE SW

C14

A23

C6

4

5

6

2

3

5

6

2

3

5

6

2

A10 A13 B32

A22 A18 B29 A24 A12B13

B14

B30

F10
7.5A

FB30

80A

B7

A11 E

C11

(2)31

(3)58b

(1)58

C10

F1
25A

C7

C8

C20

C9

31

CAN_H
CAN_L

M

FB27

15A

FB14

15A

A17

30

15

ACC1

ACC2

31

ILLUM

TO

key

Switch

To

Instrument

13#

To Fron t Engine

Compartment

Fus e Box G1 3

L/ B

L

V

F8

10A

Front

Grou nd/

In st rume nt /2

10

2

L g

Front Gro und/

Front Eng ine

Compar tmen t /10

High Beam
Rel ay

Br/W

L1 2

Instr ument /

FrontGround/9

G4

G7

To

Ins trument 11

FB22

7.5A

Sb

Sb

Lg

P7

P5

G/W

W

P11

Low Be am
Relay

L11

In s tr-

um ent

/Front

Ground/9

2

Gr

R

R

P/L

I nst rument /Fro nt

G ro und/ G

Inst rume nt/ Front

Ground/ A2

G

Y

Br/ B

Front

Ground/

Instrument

/B11

To

Autom a tic

Air

Co nditio ne r

Instru-
ment/

Air

Conditi

-oner/8

3 1

W L/W

W L/W
4

1

W L/W
4

1

Fr ont

Ground/

Instrument

/B7

Fr ont
Ground/

I nstrument

/ B8

L

R G/L

L

G R

Y

9

9

10

10

10

O

W

Y

Br

W

10

P

P

G/L

Br

2

W/G

V

V/W

R

V/ B

Sb

P/B

P

Lg/ B

4 3 2 1 13 12 11 10 9

8 7

6 5

OFF

1 20 1 20 42

42

6

R

φ

L

2

W/ B

F8

10A

B16

R

R

R

O/ B Lg/B

P/B

A26

C13 C3

A29

A30 B22

9

3

2

10

3

To In st ru m en t 15 #

11

11

11

11

Terminal

Function

Main
Li ght

Sw itc

Be am

Ch ange

Sw itch

(Tu rnOn

Th e

He adla mp)

DIAGNOSIS

CONNECTOR

16 15

8

7

14

6

13

5

12

4

11

A31

3

1 0

2

9

1

Steering

Switch

Cleara nce

Lam p
Hea d

Lam p
Low

Bea m
High

Bea m
Overta-

king

B19

G/W

G/W

Br /B

B4

Br/W

B28

L/W

L/W

B1

Lg/ W

B12

O/B

O/B

Lg/ W

L

P

To Radio 16#

W/B

10

10

L

W/G

T o E ngine Anti-
T hef t Module

To Instrument 15

To Air Bag 46

To Automaitc Air
Conditioner B11

A25

Hor n

F/L

high/

Low

beam

F/R high/

Low

beam

27

Point power(W)

The 30th power line sup ply power to the fro nt ISU via the fuse FB 29, and then via the fuse

F10 and output from the C14 pin of ISU to supply power to key hole illumination lamp、glove box
lamp、ma ke up mirror 、front roof lamp、rear roo f lamp.

The B14 of fro nt ISU is the F/L contact switc h; the B30 of front ISU is the F/R contac t switch.
When the indoor illumination lamp switch is at the left side or right side (door control

position), the front I SU computer will control the inner illum ination lamp (roof lamp work).

When the igni tion powe r is off, if o ne of the 4 doors is open, the inner illum ination lamp will

light on; while afte r 15 min, the inn er illumination lamp will be off automatically to save

The parts that controlled by the front ISU have the f ollowing functions:

（1）Inner lamp control and steering lamp、he adlamp high/low beam;
（2）Central con trol lock function
（3）Button-typ e electric window operation function
（4）Intermission time control of window wip er
（5）Delay the cl ose time of electric window when the ignition sw itch is off
（6）Rear view mirror heating control fuction (the adjustment of the motor is

Con trolled by switch )

（7）Key not pull out warning
（8）Warning and anti-theft
（9）CAN-BUS data transfer(with i nstrument、engine、ABS computer)

Front Ground/
Left 2 /8

Front Gr ound/

R ight /5

Front

Rear Windshield

Warmer Switch

Front ISU

30

15

ACC1

ACC2

31

ILLUM

ON

O FF

O N

O FF

C14

A23

C6

B14

B30

F10

7.5A

FB29

80A

E

R

R

P/L

Instrument/FrontGround/G

Instrument/FrontGround/A2

9

9

10

O

W

Keyhole Light

Clove Box Switch

Front Ceiling Light

Clove Box Switch

F igure14- 3 Vehicle inner illumination lamp circuit

2．Vehicle inner illumination lamp

1．Front ISU

Figure14-2 Front ISU

C wire plug 20

A wire plug 32

E power

D wire plug 12

F gr ound

B w ire plug 32

electricity.

When the ignition p ower is off, open one door, the inner illumination lamp will light on

until the door is c losed, and will continue to lig ht for 15s after the door closed.

When the ignition po wer on, the inner illumination lamp will light on only when the door is

open, a nd be off when the door is closed.

illumin ation

illumination

The A23 p in of front ISU is the key hole

lamp signal output pin, when the

ignition power is off, the key

lamp will light on if open the drive r 's door. Even if the

driver's door is closed, the lamp will continue to light on for 8s. Shown as figu re 14-3.

2 8

A5 has two vehicle body computer, one is front ISU

shown as figure 14-2 ,

the other is rear ISU .

（

As shown in figure 14-4, the 30th power line supply power to the E pin of front ISU via fuse

Fb29 and then fuse FB25, and output from the C20 pin of front ISU to suppply power to F/R turn
lamp and right side turn lamp; the voltage output from the the C9 pin of front ISU supply power to
F/L turn lamp and left side turn lamp; it also supply power to the 4th pin of dangerous warning lamp.

If one turn lamp cause trouble , then the other turn lamp of the same side will speed up the

flashing frequency, and it will be twice of that in normal condition. But the side turn signal lamp will
not be influenced.

There are two modes of vehicle lamp warning system: activate or unchain mode.
When the vehicle lamps connected, open the driver's door (system activate), the buzzer will

warning. If you close the driver's door or turn off the vehicle lamp switch when the buzzer is
warning , it will stop.

（1）Turn lamp and dangerous warning lamp circuit

（2） Anti-theft activate lamp warning

3．Turn lamp and hazard warning light circuit

Fron t G round/ Fr ont
En gine Compart ment
/16

To Haz ard

Warning

lig ht Swit ch 6#

I nstr ume nt/Front

Ground/ 11

C20

C9

G /L

Br

Front ISU

From ILLUM

1

6

4

5

2

From Front Left Turn

A3

Y

Y

Br

W

3 1

30

15

ACC1

ACC2

31

ILLUM

⑩

Hazard Switch

Le f t Side Turn Li ght

Front Ground/Front Engine
Compartment/13

FB30
80A

E

（2）31

F1
25A

C7

C8

P

P

Right Side Turn Light

The voltage of 30 th line→fu se FB22→high beam r elay coil→the A19 pi n of front I SU,

when the high beam relay coil get el ectricity, the contact point will close.

The vol tage of 30th line→line after the h igh beam relay contact point get into two li nes:

one line via the FB25→F/L high beam, the other line via the FB26→F/R high beam, the high
bea m light on then.

The voltage of 30t h line→fuse Fb22→lo w beam re lay coil→t he A17 pin of front I SU,

when the low beam relay coil get ele ctricity, the contact p oint will cl ose.

The volt age of 30th line→line after the lo w beam re lay contact point get i nto three li nes:

one line via the FB27→ F/L low beam and F/ L lamp ad justing mo tor , the 2 nd line supply
pow er to head lamp adjusting switch; the 3rd line via the FB14→F/R low beam and F/R lamp
adjusting moto r , the low beam light on then.

When the switch is set at the high beam positio n, the 10t h and 13t h pin of lamp

com bination s witch are connectted, the 12nd、8th and 11 st pin are connectted, the B1 pi n of
front ISU→ th e 10th pin of lamp combinatio n switch→ the 13rd pin of lamp combina tion
switch→ground, the B12 pin of front ISU→ the 12nd pi n of lamp combination switch→ the
11st pin of lam p combination switch→ground.

When t he switch is set at the low beam position, the 12n d and 11th pin of lamp

com bination s witch are c onnectted, the 12nd、11st and 9 th pin are connectted .

When t he switch is set at t he overtake position, the 10th and 13rd pin of lamp

com bination s witch are c onnectted.

When t he switch is set at the dimme r position , the 10th and 13th pin of lamp

com bination switch are c onnectted; and when the switch is set at th e headlam p position, the
10th and 13rd pin of lamp combinat ion switch are connectted, and the 12nd、1 1st and 8th pin
are connectted .

When the switch is set at the L position, the 6th and 5th pin of lamp comb ination sw itch

are connectted; and when the swit ch is set at the R position, the 6th and 7 th pin of lamp
com bination s witch are c onnectted. The circui t is shown as figure 14 -5.

（1）High Beam Circuit

（2）Lo w Beam C ircuit

（3）La mp Comb ination Sw itch

High Beam Control Circuit：

High Beam Main C ircuit：

Low Be am Contro l Circuit：

Low Bea m Main Ci rcuit：

Lamp C hanging Switch：

Lamp Main Switch：

Steering Switch：

Figure14-4 Turn lamp circuit

4．Headlamp circuit

29