Geely EC718, EC718RV, EC715, EC715RV. Manual part — 81

No

Step 15

Replace the fuel pump.

(a)

Replace the fuel pump. Refer to

2.3.8.3

Fuel Pump Assembly

Replacement

.

Confirm repair completed.

Next

Step 16

System normal.

2.3.7.4 All Fuel Injectors Inoperative

Schematic:

12

From Battery

Main Relay

To Ignition Switch

Engine

Control

Module

Fuel Injector 1

Fuel Injector 2

Fuel Injector 3

Fuel Injector 4

FE02-5411b

Diagnostic Steps:

Step 1

Check whether the engine anti-theft system is activated.

Does the engine warning lamp flash?

No

Go to step 3

Engine

Fuel System JL4G18-D

2-239

Yes

Step 2

Repair the engine anti-theft system.

(a)

Repair the engine anti-theft system. Refer to

2.5.7.12

Engine

Anti-theft Warning Lamp Flashing, Vehicle Can Not Start

.

Is fuel injector working properly?

Yes

System normal

No

Step 3

Check ECM fuse.

IF14

IF2

IF1

IF5

IF7

IF3

IF16

IF27

IF25

IF26

IF28

IF30

IF24

IF20

IF19

IF23

IF18

IF21

IF13

IF12

IF15

IF9

IF10

IF8

F17

F22

M

FE02-5412b

Is ECM fuse IF12 blown?

No

Go to step 6

Yes

Step 4

Repair ECM power supply circuit.

2-240

Fuel System JL4G18-D

Engine

FE02-5413b

1

3

5

7

8

6

4

2

9

10

11

12

13

23

24

25

26

27

28

29

30

37

51

52

53

54

55

56

57

58

59

60

61

62

63

64

38

39

40

41

42

43

44

45

46

47

48

49

50

31

32

33

34

35

36

14

15

16

17

18

19

20

21

22

ECM Harness Connector EN01

(a)

Repair ECM power supply short to body ground fault.

(b)

Replace fuse IF12.

Is fuel injector working properly?

Yes

System normal

No

Step 5

Inspect and repair ECM ground circuit.

FE02-5414b

1

3

5

7

8

6

4

2

9

10

11

12

13

23

24

25

26

27

28

29

30

37

51

52

53

54

55

56

57

58

59

60

61

62

63

64

38

39

40

41

42

43

44

45

46

47

48

49

50

31

32

33

34

35

36

14

15

16

17

18

19

20

21

22

ECM Harness Connector EN01

(a)

Check ECM ground circuit.

(b)

Repair ECM EN01 terminals 5,43,48 to the body open circuit
fault.

Is fuel injector working properly?

Yes

System normal

Engine

Fuel System JL4G18-D

2-241

No

Step 6

Check the fuel injector wiring harness connector terminal 1 voltage.

Cylinder No.1 Fuel Injector Harness Connector EN11

1

2

FE02-5415b

(a)

Turn on point switch.

(b)

Measure fuel injectors wiring harness connector terminal 1
voltage with a multimeter .

Standard Voltage: 11-14 V

Is voltage the Standard Value?

Yes

Go to step 8

No

Step 7

Repair the main relay circuit.

(a)

Repair the main relay circuit. Refer to this
section

2.2.7.37

DTC P0560 P0562 P0563

.

Is fuel injector working properly?

Yes

System normal

No

Step 8

Check the fuel injector wiring harness connector terminal 2 low voltage periodic waveform.

Cylinder No.1 Fuel Injector Harness Connector EN11

1

2

FE02-5416b

(a)

Turn on the ignition switch and try to start the engine.

(b)

At the same time, check the fuel injectors harness connector
terminal 2 low-voltage periodic waveform with an
oscilloscope.

Does it produce a low-voltage periodic waveform?

Yes

Go to step 10

No

Step 9

Replace ECM.

(a)

Replace ECM. Refer to

2.2.8.8

Engine Control Module

Replacement

.

Is fuel injector working properly?

2-242

Fuel System JL4G18-D

Engine