Chery Tiggo 5 (T21). Manual — part 362

32–

39

32

SUPPLEMENTAL RESTRAINT SYSTEM

DTC

B0072-11

Belt Pretensioner Front Passenger Loop Circuit Short to
Ground

DTC

B0072-12

Belt Pretensioner Front Passenger Loop Circuit Short to
Battery

DTC

B0072-1A

Belt Pretensioner Front Passenger Loop Circuit
Resistance Below Threshold

DTC

B0072-1B

Belt Pretensioner Front Passenger Loop Circuit
Resistance Above Threshold

DTC

B0072-1C

Belt Pretensioner Front Passenger Loop Circuit Voltage
Out of Range

32–

40

32

ET21320070

16 15 14 13 12 11 10

8

7

6

5

4

3

2

1

9

W

I-036

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

VW

VW

V

V

-

+

1

2

8

7

1

2

1

2

-

+

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

FRONT
PASSENGER
SEAT BELT
PRE-TENSIONER

B-002

B

B-002

W

I-006

I-006

B-003

8

R

R

1

4

I-036

B-055

*2

*1

B-072

*2: SRS control module connector is B-072

*1: SRS control module connector is I-046

B

B-072

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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 front passenger seat belt pretensioner connector, and connect the new front passenger seat

belt pretensioner connector to connector B-002.

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

B0072-11

Belt Pretensioner Front
Passenger Loop
Circuit Short to Ground

Ignition switch ON

ON

 Front passenger

seat belt
pretensioner

 Wire harness and

connector

 SRS control

module assembly

B0072-12

Belt Pretensioner Front
Passenger Loop
Circuit Short to Battery

B0072-1A

Belt Pretensioner Front
Passenger Loop
Circuit Resistance
Below Threshold

B0072-1B

Belt Pretensioner Front
Passenger Loop
Circuit Resistance
Above Threshold

B0072-1C

Belt Pretensioner Front
Passenger Loop
Circuit Voltage Out of
Range

1

Check front passenger seat belt pretensioner

WARNING

 Never measure the front passenger seat belt pretensioner directly, otherwise, it may cause serious

personal injury due to accidental deployment of the airbag.

Replace front passenger seat belt
pretensioner

NG

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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 front passenger seat belt pretensioner connector B-002 and SRS control module assembly

connector I-046/B-072.

c. Disconnect the body wire harness connector B-003 and instrument panel wire harness connector I-006

(*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 front passenger seat belt pretensioner

connector B-002.

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

front passenger seat belt pretensioner connector B-002
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

OK

Repair or replace instrument panel/body
wire harness and connector

NG

3

Check front passenger seat belt pretensioner control circuit

OK

RT21320280

-

+

V

1

2

-

+

B-002

Multimeter

Connection

Condition

Specified

Condition

B-002 (1) - Body

ground

Ignition switch ON

Below 1 V

B-002 (2) - Body

ground

Ignition switch ON

Below 1 V