Chery Tiggo 5 (T21). Service manual — part 81

06–

166

06

b. Check A/C pressure sensor connector.

a. Turn ignition switch to ON.
b. Check voltage between A/C pressure sensor connector

terminal and body ground.

a. Turn ignition switch to LOCK.
b. Disconnect ECM connector E-033.
c. Check wire harness between connector terminals.

Check for Open

Check for Short

Repair or replace connector

NG

3

Check A/C pressure sensor power supply voltage

OK

E-041

3

2

1

-

+

V

RT21065060

Multimeter

Connection

Condition

Specified

Condition

E-041 (3) - Body

ground

Ignition switch ON

5 V

Go to step 5

OK

4

Check A/C pressure sensor power supply circuit

NG

E-033

49 50 51

63

64

15

16

31

32

47

48

33 34 35

17 18 19

1 2 3

52 53 54 55 56 57 58 59 60 61 62

36 37 38 39 40 41 42 43 44 45 46

20 21 22 23 24 25 26 27 28 29 30

4 5 6 7 8 9 10 11 12 13 14

E-041

3

2

1

-

+

RT21065061

Multimeter

Connection

Condition

Specified

Condition

E-041 (3) -

E-033 (19)

Always

Continuity

Multimeter

Connection

Condition

Specified

Condition

E-041 (3) or

E-033 (19) - Body

ground

Always

No continuity

E-041 (3) or
E-033 (19) -

Battery positive

Always

No continuity

06–

167

06

a. Disconnect ECM connector E-033.
b. Check wire harness between A/C pressure sensor

connector terminals and ECM connector terminals.
Check for Open

Check for Short

a. Use X-431 3G diagnostic tester to read the ECM DTC.
b. Refer to "DTC Confirmation Procedure".
c. Check if DTC P0531-00 still exists.

Repair or replace wire harness or
connector (A/C pressure sensor - ECM)

NG

5

Check A/C pressure sensor signal circuit and ground circuit

OK

E-033

49 50 51

63

64

15

16

31

32

47

48

33 34 35

17 18 19

1 2 3

52 53 54 55 56 57 58 59 60 61 62

36 37 38 39 40 41 42 43 44 45 46

20 21 22 23 24 25 26 27 28 29 30

4 5 6 7 8 9 10 11 12 13 14

E-041

3

2

1

-

+

RT21065062

Multimeter

Connection

Condition

Specified

Condition

E-041 (2) -

E-033 (24)

Always

Continuity

E-041 (1) -

E-033 (47)

Always

Continuity

Multimeter

Connection

Condition

Specified

Condition

E-041 (2) or

E-033 (24) - Body

ground

Always

No continuity

E-041 (2) or
E-033 (24) -

Battery positive

Always

No continuity

E-041 (1) or

E-033 (47) - Body

ground

Always

No continuity

E-041 (1) or
E-033 (47) -

Battery positive

Always

No continuity

Repair or replace wire harness or
connector (A/C pressure sensor - ECM)

NG

6

Replace A/C pressure sensor, and check for DTCs

OK

Replace ECM

NG

06–

168

06

System is operating normally.
Reassemble vehicle and perform a road test to confirm that malfunction reported by customer has
been repaired.

OK

06–

169

06

SQR484F ENGINE MANAGEMENT SYSTEM

DTC

U0101-87 Lost Communication With TCM (CVT only)

ET21065019

29 30 31 32 33 34 35 36 37 38 39 40 41 42

1 2 3 4 5 6 7 8 9 10 11 12 13 14

43 44 45 46 47 48 49 50 51 52 53 54 55 56

15 16 17 18 19 20 21 22 23 24 25 26 27 28

TCU

2-1

2-17

41

CAN H1

CAN L1

CAN H1

CAN L1

42

OB

O

OB

O

E-030

B

E-030

ECM-2

ECM-1

E-033

E-035

2-63

2-64

1-47

Br

Br

B

B

Br

B

1-48

E-026

E-028

37 38 39 40 41 42 43 44 45 46

47

48

25 26 27 28 29 30 31 32 33 34

35

36

13 14 15 16 17 18 19 20 21 22

23

24

1

2

3

4

5

6

7

8

9 10

11

12

B

E-033

B

E-035

49 50 51

63

64

15

16

31

32

47

48

33 34 35

17 18 19

1

2

3

52 53 54 55 56 57 58 59 60 61 62

36 37 38 39 40 41 42 43 44 45 46

20 21 22 23 24 25 26 27 28 29 30

4

5

6

7

8

9 10 11 12 13 14