Chery Tiggo 5 (T21). Service manual - part 437

38–

29

38

DTC

U0100-87 Lost Communication with EMS

DTC

U0101-87 Lost Communication with TCM

DTC

U0129-87 Lost Communication with BSM

DTC

U0131-87 Lost Communication with EPS

DTC

U0140-87 Lost Communication with BCM

DTC

U0151-87 Lost Communication with ICM

DTC

U0167-87 Lost Communication with IMMO

DTC

U0214-87 Lost Communication with PEPS

DTC

U0073-88 CAN Bus Off

38–

30

38

ET21380070

INSTRUMENT 
CLUSTER

29

30

32

31

30

29

28

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

27

26

25

24

23

22

21

20

19

18

17

CAN-L2

CAN-H2

L

I-015

I-015

7

5

3

1

8

6

4

2

J101

J102

J103

J104

J105

J106

J107

J108

J109

J110

J111

J112

J113

J114

J115

J116

I-018

I-029

MICROPROCESSOR

6

8

I-029

I-005

J105

J106

3

2

IMMOBILIZER
CONTROL
MODULE

I-018

I-057

A30

A31

A14

A15

6

14

11

3

DIAGNOSTIC 

INTERFACE

I-050

CAN-L1 CAN-H1

CAN-L1 CAN-H1

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

B

B

I-050

A32

A31

A30

A29

A28

A16

A15

A14

A13

A12

A11

A10

A9

A8

A7

A6

A5

A4

A3

A2

A1

A27

A26

A25

A24

A23

A22

A21

A20

A19

A18

A17

L

I-005

B

I-057

1

2

3

4

5

6

7

8

9

10

CAN-L2 CAN-H2

CAN-L1

CAN-H1

CAN-L1

CAN-H1

CAN-L1

CAN-H1

O

OB

O

OB

PSE 
CONNECTION J1

EPS B 
CONNECTOR

BCM A

38–

31

38

ET21380071

INSTRUMENT 
CLUSTER

29

30

32

31

30

29

28

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

27

26

25

24

23

22

21

20

19

18

17

CAN-L2

CAN-H2

CAN-L2

CAN-H2

L

I-015

I-015

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

B

E-085

13

12 11 10 9 8 7 6 5 4 3 2

24 23 22 21 20 19 18 17 16 15 14

37 36 35 34 33 32 31 30 29 28 27 26

1

38

25

B

E-030

29 30 31 32 33 34 35 36 37 38 39 40 41 42

1 2 3 4 5 6 7 8 9 10 11 12 13 14

43 44 45 46 47 48 49 50 51 52 53 54 55 56

15 16 17 18 19 20 21 22 23 24 25 26 27 28

1

2

3

4

5

6

7

8

9 10

11

12

13

14 15

E-027

MICROPROCESSOR

3

2

E-027

I-034

9

10

E-033

I-005

14

26

E-030

E-085

ABS 
CONTROL
MODULE

17

1

42

41

I-019

A30

A31

A14

A15

BCM A 

AUDIO ASSISTANT

CAN-L1 CAN-H1

CAN-L1 CAN-H1

CAN-L1

CAN-H1

I-046

SRS
CONTROL
MODULE

A32

A31

A30

A29

A28

A16

A15

A14

A13

A12

A11

A10

A9

A8

A7

A6

A5

A4

A3

A2

A1

A27

A26

A25

A24

A23

A22

A21

A20

A19

A18

A17

L

I-005

D1

D2

D3

D4

D5

D6

D7

D8

D10

D11

D12

D13

D14

D15

D16

D9

B

I-019

32

31

30

29

28

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

27

26

25

24

23

22

21

20

19

18

17

Gr

I-046

2

17

CAN-L1

CAN-H1

CAN-L1

CAN-H1

CAN-L2 CAN-H2

O

OB

O

OB

w

ECM-2

38–

32

38

Self-diagnosis Detection Logic

Diagnosis Procedure

a. Turn ignition switch to LOCK.
b. Disconnect the negative battery cable.
c. Disconnect the Engine Control Module (ECM) connector 

E-033.

d. Check the wire harness, connector and terminals for 

deformation, bend or damage.

DTC Code

DTC Definition

DTC Detection 

Condition

Possible Cause

U0100-87

Lost Communication 
with EMS

Ignition switch ON

 Engine Control Module (ECM)
 Transmission Control Module (TCM)
 ABS control module
 EPS control module
 Body Control Module (BCM)
 SRS control module
 Anti-theft control module
 Instrument cluster
 CAN line communication

U0101-87

Lost Communication 
with TCM

U0129-87

Lost Communication 
with BSM

U0131-87

Lost Communication 
with EPS

U0140-87

Lost Communication 
with BCM

U0151-87

Lost Communication 
with ICM

U0167-87

Lost Communication 
with IMMO

U0214-87

Lost Communication 
with PEPS

U0073-88

CAN Bus Off

CAUTION

 When performing circuit diagnosis and test, always refer to circuit diagram for specific circuit and 

component information.

1

Check connector and terminal

RT21380241