Chery Tiggo 5 (T21). Manual - part 152

12–

9

12

Circuit Diagram

Cooling System

ET21120010

A1

A2

A3

A4

A5

A6

A7

A8 A9 A10

F12

F24

F11

F23

F10

F22

F9

F21

F8

F20

F7

F19

F6

F18

F5

F17

F4

F16

F3

F15

F2

F14

F1

F13

Gr

E-076

W

E-069

B

E-033

49 50 51

63

64

15

16

31

32

47

48

33 34 35

17 18 19

1

2

3

52 53 54 55 56 57 58 59 60 61 62

36 37 38 39 40 41 42 43 44 45 46

20 21 22 23 24 25 26 27 28 29 30

4

5

6

7

8

9 10 11 12 13 14

A8

EF38

7.5A

RL

FAN CONTROLLER

F21

86

30

85

87

MF02

60A

FAN
RELAY

B

BY

R

F22

1

2

2-56

B

3

VOTAGE
REGULATOR

MICROPR
OCESSOR

OUTPUT

M

INPUT

ECM
E-033
E-035

ENGINE 
COMPARTMENT 
FUSE AND 
RELAY BOX

E-076

E-078

E-069

E-046

E-051

BATTERY

ECM
MAIN 
RELAY

10A

EF19

10A

EF40

A2

F14

2-20

RL

2-5

Br

A6

2-15

2-16

RR

R

86

30

85

87

2

E-059

E-059

2

Gr

E-046

1

2

3

Y

LG

Y

LG

COOLANT
TEMPERATURE 
SENSOR

E-021

1

2

L

E-021

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

31

35

39

40

41

42

32

33

36

37

38 34

27

28

29

30

B

E-007

2

1

1-37

1-20

10

9

E-007
E-038

37 38 39 40 41 42 43 44 45 46

47

48

25 26 27 28 29 30 31 32 33 34

35

36

13 14 15 16 17 18 19 20 21 22

23

24

1

2

3

4

5

6

7

8

9 10

11

12

B

E-035

12–

10

12

DIAGNOSIS & TESTING

Problem Symptoms Table

HINT:
Use the table below to help determine the cause of problem symptoms. Check each suspected area in 
sequence. Repair or replace the faulty components, or adjust as necessary.

Symptom

Suspected Area

See page

Insufficient coolant

Coolant pipe (deteriorated and leaked)

-

Expansion tank (leaked)

12-18

Radiator assembly (leaked)

12-29

Heater core assembly (leaked)

31-78

Thermostat (improperly sealed)

12-19

Thermostat seat (cracked and damaged)

12-22

Water pump (bearing loose and leaked)

12-31

Engine cylinder head gasket (damaged)

07-55

Engine cylinder head (water jacket leaked)

07-55

Engine block (water jacket leaked)

07-78

Engine overheating

Low coolant level

12-14

Air resistance exists in pipe

-

Expansion tank cap (damaged)

-

Fan controller

12-25

Cooling fan assembly

12-26

Radiator assembly

12-29

Thermostat

12-19

Leakage in engine

-

Unable to reach normal engine 
temperature

Fan controller

12-25

Cooling fan assembly (constantly 
operating)

12-26

Thermostat

12-19

Cooling fan does not operate or abnormal 
air speed

Fan controller

12-25

Cooling fan assembly

12-26

Wire harness

-

ECM (Engine Control Module) failure

06-256

12–

11

12

Cooling System Leakage Test

Test Procedures

1. Turn off all the electrical equipment and ignition switch.
2. Check if coolant level is between "MAX" and "MIN" lines. 

If coolant level is below "MIN" line, add coolant.

3. Connect the cooling system pressure tester to the 

coolant pressure release cap opening (expansion tank 
cap opening) and tighten it slowly.

WARNING

 Always make sure engine is cold before operating cooling system.
 Never open expansion tank cap or remove drain cock plug when engine is operating or cooling system 

overheats. The overheated engine coolant and steam with high-pressure may flow out and cause 
serious personal injury.

CAUTION

 When testing cooling system, please pressurize the system to specified pressure. Otherwise it may 

damage system components.

 Before testing cooling system, do not perform operation until coolant temperature drops to normal level. 

Otherwise it may cause scald.

MAX

MIN

RT21120030

10

5

60

40

20

80

TEST

SYSTEM

100

120

140

160

200

180

PS

RT21120040

CAUTION

 Make sure there is no leakage in the connecting part of coolant system pressure tester, in order to avoid 

pressure leakage during test.

12–

12

12

4. Pressurize the cooling system to 1.3 ± 0.2 bar with the cooling system pressure tester, and then observe 

the pressure changes. If the system pressure does not drop within 2 minutes, it indicates there is no 
leakage in the system. If the pressure changes greatly, it indicates that there is a leakage in the system; 
find the leaking area and perform troubleshooting.

Coolant Concentration Test

Test Procedures

1. As shown in the illustration, drip a drop of coolant on the 

glass of freezing point tester with a pipette, and then 
observe the freezing point value of coolant.

2. As shown in the illustration, observe the scale 3 of 

freezing point tester to read the ethylene glycol coolant 
freezing point value. The freezing point value must be 
kept at -35°C or lower.

If the freezing point is beyond the specified value, replace the coolant.

HINT:
Scale 1 is used to measure the freezing point value of propylene glycol coolant, and scale 2 is used to 
measure the battery electrolyte concentration.

CAUTION

 DO NOT mix different colors or types of coolant.
 Please select coolant which is suitable for local climate in different areas.
 Please read measured value at the scale line. In order to distinguish the scale line more clearly, drip a 

drop of water on the glass of freezing point tester with a pipette, then the scale line can be clearly 
distinguished via a "waterline".

RT21120050

PROPYLENE
GLYCOL

ETHYLENE
    GLYCOL

BATTERY
ELECTROLYTE

WATERLINE

ANTIFREEZE

RECHARGE

F

AIR

GOOD

-10

-20

-30

-40

-50

0( C)

  O

0( C)

  O

1.10

1.15

1.20

1.25

1.30

1.35

1.40

d

20

20

-10

-20

-30

-40

-50

1

3

2

RT21120060