Chery A15. Manual - part 143

When system pressure exceeds 220psi, high pressure switch closes and high-speed fan relay is 

activated by earthing between pressure switch and air conditioner relay. Battery supplies 

power to cooling fan motor through high-speed fan relay. 

 

Section Four: Internal Circulation Electromagnetic Valve Circuit 

 

I. Working Condition of Internal Circulation Electromagnetic Valve 

Internal circulation switch is pressed down (please refer to circuit diagram in Section Five of 

this Chapter). 

 

II. Working Principles of Internal Circulation Electromagnetic Valve 

When ignition switch is turned on, air conditioning blower relay coil is powered by wire X 

and the contact of air conditioning blower fan is closed. 

Press down internal circulation switch, battery supplies power to N63 internal circulation 

electromagnetic valve through blower relay and internal circulation switch. 

Section Five: Blower Circuit 

 

I. Working Condition of Blower 

Blower switch has four ranges, and blower speed has four levels accordingly. 

棕/绿
1.0

绿/黄

1.0

 棕
2.5

5

N23

1

2

E9

5

白/黑

1.0

兰

1.5

4

4

M

3
绿

2.5

1

黄/红

1.5

2

黑/红
2.5

 白/黑
1.0

黑/红
2.5

绿/黄

0.5

棕
0.5

V2

N63

5

6

白/绿

1.0

1

白

0.5

2

黑/红

2.5

棕

0.5

3

4

2

1

黄/红

1.5

3

黑

2.5

8

2

1

白/绿

1.0

1

4

7

V

1.0

4

3

2

5

6

30

A

B4

R/

SC

K

FS
9

10

A

FS
12

IM

MO

E1

2

D1

3

D1

2

红

2.5

红/兰

2.5

棕

1.0

NR
0.5

85

12

V

86

鼓

风机继

电器

30

87

空调开关

空调继电器

温度

传感器

空调压力

高开压关

鼓风机开关

鼓风机

电阻

30

15

X

31

31

鼓风
机电

机

内外循
环电磁

阀

发动机电脑8#

发动机电脑67#

 

鼓风机继电器 Blower 

relay 

内外循环电磁阀 

Internal/external circulation electromagnetic 
valve 

空调开关 

Air conditioner switch 

空调压力高压开关 

Air conditioning high-pressure switch 

空调继电器 

Air conditioner relay 

红 Red 

鼓风机开关 Blower 

switch 

兰 Blue 

温度传感器 Temperature 

sensor 

黑 Black 

发动机电脑 67# 

Engine computer 67# 

白 White 

发动机电脑 8# 

Engine computer 8# 

绿 Green 

鼓风机电阻 Blower 

resistor  黄 Yellow 

鼓风机电机 Blower 

motor 

棕 Brown 

 

II. Working Principle of Blower 

When blower switch is placed to range 1, pin 2 and pin 5 of blower switch are connected. 

Battery supplies power to blower through blower switch and all four dropping resistors of 

serially connected blower speed-regulating resistors to start blower working at the lowest 

speed. 

When bower switch is placed to range 2, pin 2 and pin 4 of blower switch are connected. 

Battery supplies power to blower through blower switch and three dropping resistors of 

serially connected blower speed-regulating resistors to start blower working at speed level 2. 

When bower switch is placed to range 3, pin 2 and pin 3 of blower switch are connected. 

Battery supplies power to blower through blower switch and two dropping resistors of serially 

connected blower speed-regulating resistors to start blower working at speed level 3. 

When bower switch is placed to range 4, air conditioner relay is activated. Battery supplies 

power directly to blower through blower switch without passing through any dropping resistor 

to start blower working at the highest speed.

 

 

 

Section Six: Air Conditioner Control Panel 

 

 

1. Blower switch

 

2. Temperature control switch 

3. Airflow distribution switch 

4. A/C switch 

5. Internal circulation switch 

 

 

 

 

Section Seven: Air Conditioning Compressor 

 

1. Driving Belt Position 

 

1-Engine  

 

2-Water pump/Power steering pump 

3-Compressor  

4-Idler 

5-Crank shaft   

6-Tensioner 

 

 

2. Coolant Pipeline Diagram 

 

 

Compressor

 

Condenser 

 

 

 

 

Evaporator 

 

Fan 

 

 

 

 

 

Drying bottle/collector

 

Expansion valve 

 

 

 

Section Eight: Air Conditioning System Overview