Chery Tiggo 5 (T21). Manual - part 376

34–

4

34

Tools

Special Tool

General Tool

X-431 3G Diagnostic Tester

RCH0000001

ཽ⪔⊳䖜

Digital Multimeter

RCH0000002

34–

5

34

Circuit Diagram

Engine Immobilizer System

ET21340010

IGNITION SWITCH
    ON OR START

RF06

10A

6

R

O

B

OB

OB

OB

O

O

4

IG-SW

GND

CAN-L

CAN-H

2

8

6

14

6

17

1

DIAGNOSTIC
INTERFACE

ECM-2

10

1

2

3

4

5

6

7

8

9 10 11 12

13

85

85

87

87 30

87 30

30

86

86

85

86

14 15 16 17 18 19 20 21 22 23 24

25

27

26

Br

W

GND

ANT A

ANT B

IMMOBILIZER
COIL

IMMOBILIZER COIL

IMMOBILIZER 
CONTROL 
MODULE

7

5

3

1

8

6

4

2

1

2

9

10

11

12

13

14

15

3

4

5

6

7

8

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

49 50 51 52 53 54 55 56 57 58 59 60 61 62

63

64

15

16

31

32

47

48

33 34 35 36 37 38 39 40 41 42 43 44 45 46

17 18 19 20 21 22 23 24 25 26 27 28 29 30

1

2

3

4

5

6

7

8

9 10 11 12 13 14

E-033

I-034

E-027

I-007

INSTRUMENT 
PANEL FUSE 
AND RELAY 
BOX

B

I-007

B

E-033

B

I-050

B

I-018

I-018

I-050

I-003

W

I-034

9

1

2

3

4

B

2

4

3

34–

6

34

Immobilizer Control Module Terminal List

No.

Definition

Description

1

-

-

2

GND

Ground

3

-

-

4

IG-SW

Ignition Switch Power Supply

5

-

-

6

CAN-L

CAN Low (Diagnosis)

7

-

-

8

CAN-H

CAN High (Diagnosis)

B1

ANT A

Coil (ANT A)

B2

ANT B

Coil (ANT B)

B3

GND

Coil (GND)

34–

7

34

DIAGNOSIS & TESTING

Problem Symptoms Table

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

Engine Immobilizer System Match

If the transponder, ECM or immobilizer control module is replaced, match the system again using diagnostic 
tester. When matching the engine immobilizer system, please send the VIN of the vehicle to After-Sales 
Service Department of Chery International to get the safety code.
The operation procedures are as follows:
1. Connect the X-431 3G diagnostic tester to the Data Link Connector (DLC).
2. Turn ignition switch to ON.
3. Turn the X-431 3G diagnostic tester on, then select 

"T21".

4. Select "IMMO".

Symptom

Suspected Area

See page

Immobilizer system causes the engine 
cannot start or immobilizer system has 
failed

Ignition key (transponder)

37-58

Immobilizer coil

34-20

Wire harness or connector

-

Immobilizer control module

34-26

Electronic fuel injection system

-

ECM

06-256

S16

M12

A13

A13A

A21FL-C

B16

S15

M16

T21

Menu

System

Help

File

PgUp

PgDn

Reset

Back

RT21340020

BCM

Menu

System

Help

File

PgUp

PgDn

Reset

Back

SRS

ENG

ABS

ISU

ICM

ITM

A/T

IMMO

RT21340030