Chery Tiggo 5 (T21). Manual — part 95

06–

222

06

a. Disconnect ECM connector E-033.
b. Turn ignition switch to ON and check ECM connector

terminals.

11

Check ECM power supply and ground

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

-

+

V

RT21065069

Multimeter

Connection

Condition

Specified

Condition

E-033 (35, 20) -

E-033 (63 or 64)

Ignition switch ON

11 to 14 V

Repair or replace related wire harness

NG

Go to Diagnostic Help

OK

06–

223

06

Diagnosis Procedure

a. Check spark plug of each cylinder, and observe if the type and gap are as specified.

a. Observe if trouble occurs just after fuel is filled.

Engine starts normally, but idles roughly at anytime

1

Check air filter for blockage, and intake pipe for air leakage

Check and repair intake system

NG

2

Check if throttle is stuck

OK

Repair or replace throttle

NG

3

Check spark plug

OK

Replace spark plug

NG

4

Check throttle for carbon deposits

OK

Clean throttle

NG

5

Check injector for leakage or blockage

OK

Clean or replace injector

NG

6

Check fuel condition

OK

Replace fuel

NG

OK

06–

224

06

a. Measure compression of misfiring cylinder (

See page 07-20

).

a. Check if engine ignition sequence and ignition timing are as specified.

a. Disconnect ECM connector E-033.
b. Turn ignition switch to ON and check ECM connector

terminals.

7

Check pressure of cylinder

Check engine to confirm cause of low
compression

NG

8

Check engine ignition sequence and ignition timing

OK

Check and repair ignition timing

NG

9

Check ECM power supply and ground

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

-

+

V

RT21065069

Multimeter

Connection

Condition

Specified

Condition

E-033 (35, 20) -

E-033 (63 or 64)

Ignition switch ON

11 to 14 V

Repair or replace related wire harness

NG

Go to Diagnostic Help

OK

06–

225

06

Diagnosis Procedure

a. Check spark plug of each cylinder, and observe if the type and gap are as specified.

a. Observe if trouble occurs just after fuel is filled.

Engine starts normally, but idles roughly during warming up

1

Check air filter for blockage, and intake pipe for air leakage

Check and repair intake system

NG

2

Check spark plug

OK

Replace spark plug

NG

3

Check throttle for carbon deposits

OK

Clean throttle

NG

4

Unplug coolant temperature sensor connector, start engine and observe if engine idles
normally during warming up

OK

Check and repair wire harness or replace
sensor

OK

5

Check injector for leakage or blockage

NG

Clean or replace injector

NG

6

Check fuel condition

OK

Replace fuel

NG