Chery Tiggo 5 (T21). Manual - part 434

38–

17

38

DTC

B1100-13 Power Supply Circuit Open

DTC

B1100-16 Power Supply Circuit Voltage Below Threshold

DTC

B1100-17 Power Supply Circuit Voltage Above Threshold

ET21380050

BATTERY

R

P

RF23

10A

INSTRUMENT 
CLUSTER

23

10A

RF06

6

11

13

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

IGNITION SWITCH
    ON OR START

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

INSTRUMENT
PANEL 
FUSE AND 
RELAY BOX A

B

I-007

I-007

L

I-015

I-015

MICROPROCESSOR

I-003

3

B

38–

18

38

Self-diagnosis Detection Logic

DTC Code

DTC Definition

DTC Detection 

Condition

Possible Cause

B1100-13

Power Supply Circuit 
Open

Ignition switch ON

 Charging system
 Wire harness or connector
 Instrument cluster

B1100-16

Power Supply Circuit 
Voltage Below 
Threshold

B1100-17

Power Supply Circuit 
Voltage Above 
Threshold

CAUTION

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

component information.

38–

19

38

Diagnosis Procedure

a. Using a digital multimeter, measure the voltage between positive battery terminal and negative battery 

terminal.

b. The battery voltage should be between 11 and 14 V.

a. Turn ignition switch to LOCK.
b. Disconnect the negative battery cable.
c. Disconnect the instrument panel wire harness connector 

I-015.

d. Connect the negative battery cable.
e. Turn ignition switch to ON.
f. Using a digital multimeter, measure the supply voltage 

between instrument panel wire harness connector I-015 
and body ground according to the value(s) in the table 
below to check if system power source control circuit is 
normal.
Standard Voltage

g. Turn ignition switch to LOCK.
h. Disconnect the negative battery cable.
i. Disconnect the instrument panel wire harness connectors 

I-015 and I-007.

j. Using a digital multimeter, check for continuity between 

instrument panel wire harness connectors I-015 and 



I-007 according to the table below.

1

Check battery

Recharge or replace battery

2

Check instrument panel wire harness and connector

NG

OK

RT21380100

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

I-015

-

+

V

Multimeter 

Connection

Condition

Specified 

Condition

I-015 (11) - Body 

ground

Ignition switch ON

11 to 14 V

I-015 (13) - Body 

ground

Ignition switch ON

11 to 14 V

-

+

RT21380110

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

I-015

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

I-007

Multimeter 

Connection

Condition

Specified 

Condition

I-015 (11) - 

I-007 (23)

Always

Continuity

I-015 (13) - 

I-007 (6)

Always

Continuity

38–

20

38

k. Disconnect the instrument panel wire harness connector 

I-015 and ground I-003.

l. Using a digital multimeter, check for continuity between 

instrument panel wire harness connector I-015 and 
ground I-003 according to the table below.

a. Connect all connectors.
b. Connect the negative battery cable.
c. Turn ignition switch to ON.
d. Use X-431 3G diagnostic tester (the latest software) to record and clear the DTCs stored in the instrument 

panel control system.

e. Turn ignition switch to LOCK and wait for a few seconds.
f. Turn ignition switch to ON.
g. Use X-431 3G diagnostic tester (the latest software) to read the DTCs in the instrument cluster control 

system again. 

h. Read the DTCs.

RT21380120

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

I-015

I-003

-

+

Multimeter 

Connection

Condition

Specified 

Condition

I-015 (3) - I-003

Always

Continuity

Repair or replace instrument panel wire
harness and connector

NG

3

Reconfirm DTCs

OK

Result

Proceed to

DTC B1100-13, B1100-16 and B1100-17 are output

NG

No DTC is output

OK

Replace instrument cluster

System is normal

NG

OK