Chery Tiggo 5 (T21). Manual - part 336

31–

48

31

a. Turn ignition switch to LOCK.
b. Disconnect the negative battery cable.
c. Disconnect the HVAC control panel assembly connector 

K-012.

d. Using a digital multimeter, check for continuity between 

connector K-012 and body ground to check if left mix 
damper motor circuit is short to ground according to the 
table below.
Standard Condition

e. Using a digital multimeter, check for continuity between 

connector K-012 and body ground to check if right mix 
damper motor circuit is short to ground according to the 
table below.
Standard Condition

4

Check wire harness and connector (HVAC control panel assembly - body ground)

OK

RT21311180

-

+

K-012

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

Multimeter 

Connection

Condition

Specified 

Condition

K-012 (1) - Body 

ground

Always

No continuity

K-012 (15) - Body 

ground

Always

No continuity

K-012 (16) - Body 

ground

Always

No continuity

K-012 (39) - Body 

ground

Always

No continuity

K-012 (40) - Body 

ground

Always

No continuity

RT21311190

-

+

K-012

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

Multimeter 

Connection

Condition

Specified 

Condition

K-012 (1) - Body 

ground

Always

No continuity

K-012 (9) - Body 

ground

Always

No continuity

K-012 (10) - Body 

ground

Always

No continuity

K-012 (11) - Body 

ground

Always

No continuity

K-012 (12) - Body 

ground

Always

No continuity

Repair or replace A/C wire harness and 
connector

NG

31–

49

31

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

panel assembly. 

e. Turn ignition switch to LOCK and wait for a few seconds.
f. Turn ignition switch ON.
g. Use X-431 3G diagnostic tester to read DTCs stored in the HVAC control panel assembly again.

5

Reconfirm DTCs

OK

Replace HVAC control panel assembly 

NG

System operates normally

OK

31–

50

31

DTC

B2166

Error of AC Mode Actuator

ET21310140

HVAC 
CONTROL 
PANEL

K-012

BATTERY

RF10

7.5A

RF21

10A

IGNITION SWITCH
   ON OR START

10

21

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

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

W

K-012

22 21 20

18

19

17 16 15

13

14

12 11 10

8

9

7

6

5

3

4

2

1

B

I-039

B

I-007

2

WB

BR

4

21

WV

19

Y

INSTRUMENT 
PANEL FUSE 
AND RELAY 
BOX

I-007

I-039

K-007

4

B

BrW

8

I-039

K-007

I-037

W

K-007

1

2

3

4

5

6

8

9

10 11

13 14

15 16

18

17

21

20

22

7

12

19

4 1

5 2

6 3

B

K-009

6

WL

19

4

YW

17

3

GR

20

1

2

Br

1

W

18

M

A

B

MODE DAMPER MOTOR

K-009

31–

51

31

Diagnosis Procedure

Use the circuit diagram as a guide to perform the following procedures:
a. Turn ignition switch to LOCK.
b. Disconnect the negative battery cable.
c. Disconnect the HVAC control panel assembly connector K-012.
d. Disconnect the mode damper motor connector K-009.
e. Check if wire harnesses are worn, pierced, pinched or partially broken.
f. Look for broken, bent, protruded or corroded terminals.
g. Check if related connector pins are in good condition.

a. Remove the mode damper motor.
b. Install the new mode damper motor to vehicle.
c. Use X-431 3G diagnostic tester to check if DTCs are still output.

DTC Code

DTC Definition

DTC Detection 

Condition

Possible Cause

B2166

Error of AC Mode 
Actuator

Ignition switch ON

 Mode damper motor 
 Wire harness and connector 
 HVAC control panel 

CAUTION

 When performing electrical equipment diagnosis and test, always refer to the circuit diagram for related 

circuit and component information. 

1

Check wire harness and connector

Repair or replace A/C wire harness and 
connector

2

Check mode damper motor

Replace mode damper motor

NG

OK

NO

YES