Chery Tiggo 5 (T21). Service manual - part 97

06–

230

06

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

terminals.

6

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–

231

06

Diagnosis Procedure

a. Check if engine ignition timing is as specified.

Engine starts normally, but idle speed is too high

1

Check if accelerator pedal is stuck

Adjust or replace accelerator pedal

NG

2

Check intake system and connected vacuum pipe for air leakage

OK

Check and repair intake system

NG

3

Check throttle for carbon deposits

OK

Clean throttle

NG

4

Disconnect coolant temperature sensor connector, start engine and observe if engine idles 
normally at this time

OK

Check and repair wire harness or replace 
sensor

OK

5

Check engine ignition timing

NG

Check and repair ignition timing

NG

OK

06–

232

06

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

terminals.

6

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–

233

06

Diagnosis Procedure

a. Using a fuel pressure gauge, check fuel pressure (

See page 08-11

).

Standard Fuel Pressure

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

Low engine speed or stalls when accelerating

1

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

Check and repair intake system

NG

2

Check fuel pressure

OK

Condition

Fuel System Pressure (kPa)

Key ON

400

Engine Idling

400

Key LOCK

400

Repair or replace fuel system

NG

3

Check spark plug

OK

Replace spark plug

NG

4

Check throttle for carbon deposits

OK

Clean throttle

NG

5

Check air flow meter and throttle position sensor and wire harness

OK

Check and repair wire harness or replace 
sensor

NG