Chery Tiggo 5 (T21). Manual — part 94

06–

218

06

Diagnosis Procedure

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

See page 08-11

).

Standard Fuel Pressure

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.

Difficult to start with cold engine

1

Check fuel pressure

Condition

Fuel System Pressure (kPa)

Key ON

400

Engine Idling

400

Key LOCK

400

Repair or replace fuel system

NG

2

Check spark

OK

Check and repair ignition system

NG

3

Disconnect coolant temperature sensor connector, start engine and observe if engine starts
successfully at this time

OK

Check and repair wire harness or replace
sensor

OK

4

Depress accelerator pedal slightly, and observe if it is easy to start

NG

Clean throttle

OK

NG

06–

219

06

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

a. Measure compression of misfiring cylinder (

See page 07-20

).

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

terminals.

5

Check injector for leakage or blockage

Clean or replace injector

NG

6

Check fuel condition

OK

Replace fuel

NG

7

Check pressure of cylinder

OK

Check engine to confirm cause of low
compression

NG

8

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–

220

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.

Engine speed is normal, but it is difficult to start at anytime

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 spark

OK

Check and repair ignition system

NG

OK

06–

221

06

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

a. Measure compression of misfiring cylinder (

See page 07-20

).

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

5

Disconnect coolant temperature sensor connector, start engine and observe if engine starts
successfully at this time

Check and repair wire harness or replace
sensor

OK

6

Depress accelerator pedal slightly, and observe if it is easy to start

NG

Clean throttle

OK

7

Check injector for leakage or blockage

NG

Clean or replace injector

NG

8

Check fuel condition

OK

Replace fuel

NG

9

Check pressure of cylinder

OK

Check engine to confirm cause of low
compression

NG

10

Check engine ignition sequence and ignition timing

OK

Check and repair ignition timing

NG

OK