Chery Tiggo 5 (T21). Manual - part 396

 

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Chery Tiggo 5 (T21). Manual - part 396

 

 

35–

59

35

DTC

B100813 Rear Fog Control Circuit Circuit Open

DTC

B100871 Rear Fog Control Circuit Actuator Stuck

ET21350190

INSTRUMENT 
PANEL FUSE 
AND RELAY BOX

IGNITION SWITCH

ON OR START

IGNITION SWITCH

ON OR ACC

R

RBr

7.5A

RF07

7.5A

RF13

E1

A25

BATTERY

60A

MF03

ENGINE 
COMPARTMENT
FUSE AND 
RELAY BOX

7

3

RG

A9

13

BCM

3

E-061

E-061

W

E-072

E-072

E1

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

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

B

I-007

I-007

L

I-005

I-005

B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 B13 B14 B15 B16

B17 B18 B19 B20 B21 B22 B23 B24 B25 B26 B27 B28 B29 B30 B31 B32

L

B-047

B-047

B-046

B-043

WB

WB

B

B

B

B

WB

C13

F1

2

1

2

1

REAR 
RIGHT 
FOG 
LIGHT

REAR 
LEFT 
FOG 
LIGHT

B-022

B-045

2

A32

A20

A5

5

3

FRONT
FOG

REAR
FOG

COMBINATION 
LIGHT 
SWITCH

B

GL

LY

B-028

B-037

I-011

F1

B

B-046

C1

C10 C11 C12 C13 C14 C15 C16 C17 C18

C2 C3 C4 C5

C6 C7 C8 C9

C20

C19

W

B-043

1

2

B

B-028

B

B-037

1

2

3

4

5

6

7

8

9

10

B

I-011

35–

60

35

Self-diagnosis Detection Logic

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

Diagnosis Procedure

a. Remove the rear fog light bulb, and check if the rear fog light bulb filament is blown.

Use the circuit diagram as a guide to perform the following procedures:
a. Turn ignition switch to LOCK, and disconnect the negative battery cable.
b. Disconnect the Body Control Module (BCM) connectors B-043 and E-072.
c. Disconnect the rear left fog light wire harness connector B-028 and rear right fog light wire harness 

connector B-037.

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

DTC Code

DTC Definitions

DTC Detection 

Conditions

DTC Setting Conditions

B100813

Rear Fog Control 
Circuit Circuit Open

Ignition switch ON

 Rear fog light bulb
 Wire harness or connector
 Body Control Module (BCM)

B100871

Rear Fog Control 
Circuit Actuator Stuck

1

Check rear fog light bulb

Replace rear fog light bulb

NG

2

Check wire harness and connector

OK

Repair or replace related wire harness and 
connector

NG

OK

35–

61

35

a. Turn ignition switch to LOCK.
b. Disconnect the negative battery cable.
c. Disconnect the Body Control Module (BCM) connectors 

B-043 and E-072.

d. Using a digital multimeter, check for continuity between 

terminal C13 of BCM connector B-043 and terminal E1 of 
BCM connector E-072 to check if it is short to power 
supply according to the table below.
Standard Condition

e. Using a digital multimeter, check for continuity between 

terminal C13 of BCM connector B-043 and body ground 
to check if it is short to ground according to the table 
below.
Standard Condition

3

Check rear fog light control circuit

-

+

RT21350720

C1

C10 C11 C12 C13 C14 C15 C16 C17 C18

C2 C3 C4 C5

C6 C7 C8 C9

C20

C19

B-043

E-072

E1

Multimeter 

Connection

Condition

Specified 

Condition

B-043 (C13) - 

E-072 (E1)

Always

No continuity

-

+

RT21350730

C1

C10 C11 C12 C13 C14 C15 C16 C17 C18

C2 C3 C4 C5

C6 C7 C8 C9

C20

C19

B-043

Multimeter 

Connection

Condition

Specified 

Condition

B-043 (C13) - 

Body ground

Always

No continuity

Repair or replace related wire harness and 
connector

NG

OK

35–

62

35

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

B-043.

d. Disconnect the rear left fog light wire harness connector 

B-028 and rear right fog light wire harness connector 

B-037.

e. Using a digital multimeter, check for continuity between 

terminal C13 of BCM connector B-043 and terminal 2 of 
rear left fog light wire harness connector B-028 according 
to the table below.
Standard Condition

f. Using a digital multimeter, check for continuity between 

terminal C13 of BCM connector B-043 and terminal 2 of 
rear right fog light wire harness connector B-037 
according to the table below.
Standard Condition

4

Check wire harness and connector (rear fog light - Body Control Module (BCM))

-

+

RT21350740

C1

C10 C11 C12 C13 C14 C15 C16 C17 C18

C2 C3 C4 C5

C6 C7 C8 C9

C20

C19

B-043

1

2

B-028

Multimeter 

Connection

Condition

Specified 

Condition

B-043 (C13) - 

B-028 (2)

Always

Continuity

-

+

RT21350750

C1

C10 C11 C12 C13 C14 C15 C16 C17 C18

C2 C3 C4 C5

C6 C7 C8 C9

C20

C19

B-043

1

2

B-037

Multimeter 

Connection

Condition

Specified 

Condition

B-043 (C13) - 

B-037 (2)

Always

Continuity

Repair or replace related wire harness and 
connector

NG

OK

 

 

 

 

 

 

 

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