2.4.5 Schematic
2.4.5.1 Schematic

Sensor

Air Intake 

Signal Voltage

Air Intake 

Emission Control Diagram

ECM

Fuel Injection

Engine

Exhaust 

Feedback 

Signal Voltage

FE02-5801b

Engine

Auxiliary Emission Control JL4G18-D

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2.4.6 Diagnostic Information and Procedures
2.4.6.1 Diagnostic Description

Refer to

2.4.2

 

Description and Operation

get familiar with the system functions and operations then start system diagnostics, so that

it will help with the correct diagnostic steps, more importantly, it will also help to determine whether the customer described the
situation is normal.

Canister solenoid valve repair notes:

1. Make sure airflow direction comply with specifications.

2. When particles inside the valve body causing the control valve failure, replace canister solenoid valve and check the canister

status.

3. During maintenance procedure, avoid water, oil and liquid entering into the valve.

2.4.6.2 Visual Inspection

–

Check installed after market equipment that may affect auxiliary emission control devices operation.

–

Check the easy to access system components to identify whether there is significant damage or the existence of an external
leakage.

–

Check whether the fuel is the recommended type and fill up the fuel tank.

2.4.6.3 Canister Solenoid Valve Inoperative

Schematic:

12

From Battery 

Main Relay 

Evaporative Canister Solenoid

Engine 

Control 

Module

FE02-5802b

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Auxiliary Emission Control JL4G18-D

Engine

Diagnostic Steps:

Step 1

Check engine emission malfunction warning lamp.

(a)

Start the engine.

Check whether the engine emission malfunction warning lamp is
lit.

No

Go to step 3

Yes

Step 2

Repair the engine control system fault.

(a)

Repair the engine control system fault. Refer to 

2.2.7.33

 

DTC

P0444 P0458 P0459

.

Is canister solenoid valve working properly?

Yes

System normal

No

Step 3

Check canister solenoid valve power supply circuit.

Evaporative Canister Solenoid Harness 
Connector EN24

1

2

FE02-5803b

(a)

Turn on the ignition switch.

(b)

Measure the canister solenoid valve EN24 terminal No.1
voltage with a multimeter.

Standard Voltage: 11-14 V

Yes

Go to step 5

No

Step 4

Repair the main relay.

(a)

Turn off the ignition switch.

(b)

Repair the main relay circuit. Refer to 

2.2.7.37

 

DTC P0560

P0562 P0563

.

Is canister solenoid valve working properly?

Yes

System normal

No

Step 5

Check canister solenoid valve wiring harness connector and ECM harness connector circuit.

Engine

Auxiliary Emission Control JL4G18-D

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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

Evaporative Canister Solenoid Harness Connector EN24

1

2

FE02-5804b

(a)

Turn off the ignition switch.

(b)

Check resistance between solenoid valve wiring harness
connector EN24 terminal 2 and ECM harness connector
EN01 terminal No.37 with the multimeter and confirm the
circuit continuity.

Standard Resistance Value: Less than 1 Ω

Is the resistance standard?

Yes

Go to step 7

No

Step 6

Repair Canister solenoid valve wiring harness connector and ECM harness connector.

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

Evaporative Canister Solenoid Harness Connector EN24

1

2

FE02-5804b

(a)

Turn off the ignition switch.

(b)

Repair open circuit fault between Canister solenoid valve
wiring harness connector EN24 terminal No.2 and ECM
harness connector EN01 terminal No.37.

Is canister solenoid valve working properly?

Yes

System normal

No

Step 7

Check canister solenoid valve.

Evaporative Canister Solenoid 

FE02-5805b

(a)

Turn off the ignition switch.

(b)

Check canister solenoid valve resistance.

Standard Resistance Value: 26 Ω/20°C(68 ºF)

Is the canister solenoid valve resistance standard?

Yes

System normal

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