Chery Tiggo 5 (T21). Manual - part 360

32–

31

32

DTC

B0070-11

Belt Pretensioner Front Driver Loop Circuit Short to 
Ground

DTC

B0070-12

Belt Pretensioner Front Driver Loop Circuit Short to 
Battery 

DTC

B0070-1A

Belt Pretensioner Front Driver Loop Circuit Resistance 
Below Threshold 

DTC

B0070-1B

Belt Pretensioner Front Driver Loop Circuit Resistance 
Above Threshold 

DTC

B0070-1C

Belt Pretensioner Front Driver Loop Circuit Voltage Out 
of Range 

32–

32

32

ET21320060

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

SRS 
CONTROL 
MODULE

I-046

IGNITION SWITCH

ON OR START

10A

RF08

INSTRUMENT 
PANEL FUSE 
AND RELAY BOX

I-007

B

I-045

16

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

B

I-007

18 17 16 15 14 13 12 11 10

9

8

7

6

5

4

3

2

1

1

2

-

+

W

I-035

B

B-034

LW

LW

LB

LB

+

-

2

1

10

9

1

2

B-072

I-035

B-059

DRIVER SEAT BELT 

PRE-TENSIONER

B-034

*1

*2: SRS control module connector is B-072

*1: SRS control module connector is I-046

B

B-072

8

R

R

1

4

I-036

B-055

*2

16 15 14 13 12 11 10

8

7

6

5

4

3

2

1

9

W

I-036

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33

32

Self-diagnosis Detection Logic

HINT:
When performing electrical diagnosis and test, always refer to the relevant circuit diagram for the special 
circuit and component information.

Diagnosis Procedure

a. Turn ignition switch to LOCK, disconnect the negative battery cable and wait for at least 90 seconds. 
b. Disconnect driver seat belt pretensioner connector, and connect the new driver seat belt pretensioner 

connector to connector B-034. 

c. Reconnect the negative battery cable and wait for a few seconds.
d. Turn ignition switch ON and wait for at least 90 seconds.
e. Use X-431 3G diagnostic tester to clear the DTCs.
f. Turn ignition switch to LOCK.
g. Turn ignition switch ON and wait for at least 90 seconds.
h. Use X-431 3G diagnostic tester to check if the DTCs are still output.

DTC Code

DTC Definition

DTC Detection 

Condition

Warning Light 

Condition

Possible Cause

B0070-11

Belt Pretensioner Front 
Driver Loop Circuit 
Short to Ground

Ignition switch ON

ON

 Driver seat belt 

pretensioner

 Wire harness and 

connector

 SRS control 

module assembly

B0070-12

Belt Pretensioner Front 
Driver Loop Circuit 
Short to Battery 

B0070-1A

Belt Pretensioner Front 
Driver Loop Circuit 
Resistance Below 
Threshold 

B0070-1B

Belt Pretensioner Front 
Driver Loop Circuit 
Resistance Above 
Threshold 

B0070-1C

Belt Pretensioner Front 
Driver Loop Circuit 
Voltage Out of Range 

1

Check driver seat belt pretensioner

WARNING

 Never measure the driver seat belt pretensioner directly, otherwise, it may cause serious personal injury 

due to accidental deployment of the airbag.

 Replace driver seat belt pretensioner

NG

OK

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34

32

Use circuit diagram as a guide to perform the following procedures:
a. Turn ignition switch to LOCK, disconnect the negative battery cable and wait for at least 90 seconds. 
b. Disconnect the driver seat belt pretensioner connector B-034 and SRS control module assembly 

connector  I-046/B-072.

c. Disconnect the body wire harness connector B-059 and instrument panel wire harness connector I-035 

(*1).

d. Check if wire harnesses are worn, pierced, pinched or partially broken.
e. Check for broken, bent, protruded or corroded terminals.
f. Check if related connector terminal contact pins are in good condition.

a. Turn ignition switch to LOCK, disconnect the negative 

battery cable and wait for at least 90 seconds. 

b. Disconnect the SRS control module assembly connector 

I-046/B-072.

c. Disconnect the driver seat belt pretensioner connector 



B-034. 

d. Connect the negative battery cable and wait for a few 

seconds.

e. Turn ignition switch ON.
f. Using a digital multimeter, measure the voltage between 

driver seat belt pretensioner connector B-034 and body 
ground to check for a short circuit to power supply 
according to the table below.
Standard Voltage

2

Check wire harness and connector

Repair or replace instrument panel/body 
wire harness and connector

3

Check driver seat belt pretensioner control circuit

NG

OK

RT21320240

-

+

V

1

2

-

+

B-034

Multimeter 

Connection

Condition

Specified 

Condition

B-034 (1) - Body 

ground

Ignition switch ON

Below 1 V

B-034 (2) - Body 

ground

Ignition switch ON

Below 1 V