Chery Tiggo 5 (T21). Service 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)
Radiator assembly (leaked)
Heater core assembly (leaked)
Thermostat (improperly sealed)
Thermostat seat (cracked and damaged)
Water pump (bearing loose and leaked)
Engine cylinder head gasket (damaged)
Engine cylinder head (water jacket leaked)
Engine block (water jacket leaked)
Engine overheating
Low coolant level
Air resistance exists in pipe
-
Expansion tank cap (damaged)
-
Fan controller
Cooling fan assembly
Radiator assembly
Thermostat
Leakage in engine
-
Unable to reach normal engine
temperature
Fan controller
Cooling fan assembly (constantly
operating)
Thermostat
Cooling fan does not operate or abnormal
air speed
Fan controller
Cooling fan assembly
Wire harness
-
ECM (Engine Control Module) failure
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
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