Chery Tiggo 5 (T21). Service manual — part 99

06–

238

06

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

terminals.

10

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–

239

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.

a. Remove ignition coil and spark plug of one cylinder, and ground spark plug housing. Start the engine, and

check if spark is generated.
OK: Spark is generated.

Lack of power and poor performance when accelerating

1

Check if malfunctions that clutch slipping, low tire inflation pressure, brake dragging,
incorrect tire size, and incorrect four-wheel alignment are present

Check and repair malfunctioning
component

NG

2

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

OK

Check and repair intake system

NG

3

Check fuel pressure

OK

Condition

Fuel System Pressure (kPa)

Key ON

400

Engine Idling

400

Key LOCK

400

Repair or replace fuel system

NG

4

Check spark plug

OK

Replace spark plug

NG

5

Check spark

OK

06–

240

06

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

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

a. Check exhaust system for leakage or blockage.

Check and repair ignition system

NG

6

Check throttle for carbon deposits

OK

Clean throttle

NG

7

Check air flow meter and throttle position sensor and wire harness

OK

Check and repair wire harness or replace
sensor

NG

8

Check injector for leakage or blockage

OK

Clean or replace injector

NG

9

Check fuel condition

OK

Replace fuel

NG

10

Check engine ignition sequence and ignition timing

OK

Check and repair ignition timing

NG

11

Check exhaust system

OK

Repair or replace related exhaust system
components

NG

06–

241

06

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

terminals.

12

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