Geely EC718, EC718RV, EC715, EC715RV. Manual part — 67

No

Replace idle speed control valve. Refer to

2.2.8.1

Idle Air Control Valve Replacement

.

Go to step 10

Yes

Step 4

Check idle speed control Valve terminal A circuit.

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36

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17

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19

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21

22

ECM Harness Connector EN01

A

B

C

D

Idle Control Valve Harness Connector EN17

FE02-5103b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect idle speed control valve wiring harness connector
EN17.

(c)

Disconnect ECM harness connector EN01.

(d)

Measure resistance between idle speed control valve wiring
harness connector EN17 terminal A and ECM harness
connector EN01 terminal No.22. The standard value
parameter is in the table below.

(e)

Measure resistance between idle speed control valve wiring
harness connector EN17 terminal A and a reliable ground.
The standard value parameter is in the table below.

(f)

Measure voltage between idle speed control valve wiring
harness connector EN17 terminal A and a reliable ground.
The standard value parameter is in the table below.

Test Items

Standard Value

Resistance Between EN17 (A) and EN01 (22)

Less than 1 Ω

Resistance Between EN17 (A) and a Reliable
Ground

10 kΩ or higher

Voltage Between EN17 (A) and a Reliable
Ground

0 V

Are the values specified values?

No

Repair or replace the wiring harness
connector. Go to step 10

Yes

Step 5

Check idle speed control valve terminal B circuit.

Engine

Control System JL4G18-D

2-183

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64

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34

35

36

14

15

16

17

18

19

20

21

22

ECM Harness Connector EN01

A

B

C

D

Idle Control Valve Harness Connector EN17

FE02-5104b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect idle speed control valve wiring harness connector
EN17.

(c)

Disconnect ECM harness connector EN01.

(d)

Measure resistance between idle speed control valve wiring
harness connector EN17 terminal B and ECM harness
connector EN01 terminal No.21. The standard value
parameter is in the table below.

(e)

Measure resistance between idle speed control valve wiring
harness connector EN17 terminal B and a reliable ground.
The standard value parameter is in the table below.

(f)

Measure voltage between idle speed control valve wiring
harness connector EN17 terminal B and a reliable ground.
The standard value parameter is in the table below.

Test Items

Standard Value

Resistance Between EN17 (B) and EN01
(21)

Less than 1 Ω

Resistance Between EN17 (B) and a
Reliable Ground

10 kΩ or higher

Voltage Between EN17 (B) and a Reliable
Ground

0 V

Are the values specified values?

No

Repair or replace the wiring harness
connector. Go to step 10

Yes

Step 6

Check idle speed control valve terminal C circuit.

2-184

Control System JL4G18-D

Engine

1

3

5

7

8

6

4

2

9

10

11

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23

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30

37

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63

64

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50

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33

34

35

36

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15

16

17

18

19

20

21

22

ECM Harness Connector EN01

A

B

C

D

Idle Control Valve Harness Connector EN17

FE02-5105b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect idle speed control valve wiring harness connector
EN17.

(c)

Disconnect ECM harness connector EN01.

(d)

Measure resistance between idle speed control valve wiring
harness connector EN17 terminal C and ECM harness
connector EN01 terminal No.35. The standard value
parameter is in the table below.

(e)

Measure resistance between idle speed control valve wiring
harness connector EN17 terminal C and a reliable ground.
The standard value parameter is in the table below.

(f)

Measure voltage between idle speed control valve wiring
harness connector EN17 terminal C and a reliable ground.
The standard value parameter is in the table below.

Test Items

Standard Value

Resistance Between EN17 (C) and EN01 (35)

Less than 1 Ω

Resistance Between EN17 (C) and a Reliable
Ground

10 kΩ or higher

Voltage Between EN17 (C) and a Reliable
Ground

0 V

Are the values specified values?

No

Repair or replace the wiring harness
connector. Go to step 10

Yes

Step 7

Check idle speed control valve terminal D circuit.

Engine

Control System JL4G18-D

2-185

1

3

5

7

8

6

4

2

9

10

11

12

13

23

24

25

26

27

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29

30

37

51

52

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54

55

56

57

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59

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61

62

63

64

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41

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50

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32

33

34

35

36

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15

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17

18

19

20

21

22

ECM Harness Connector EN01

A

B

C

D

Idle Control Valve Harness Connector EN17

FE02-5106b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect idle speed control valve wiring harness connector
EN17.

(c)

Disconnect ECM harness connector EN01.

(d)

Measure resistance between idle speed control valve wiring
harness connector EN17 terminal D and ECM harness
connector EN01 terminal No.36. The standard value
parameter is in the table below.

(e)

Measure resistance between idle speed control valve wiring
harness connector EN17 terminal D and a reliable ground.
The standard value parameter is in the table below.

(f)

Measure voltage between idle speed control valve wiring
harness connector EN17 terminal D and a reliable ground.
The standard value parameter is in the table below.

Test Items

Standard Value

Resistance Between EN17 (D) and EN01
(36)

Less than 1 Ω

Resistance Between EN17 (D) and a
Reliable Ground

10 kΩ or higher

Voltage Between EN17 (D) and a Reliable
Ground

0 V

Are the values specified values?

No

Repair or replace the wiring harness
connector. Go to step 10

Yes

Step 8

Check ECM power supply circuit.

(a)

Check whether ECM power supply circuit is normal.

(b)

Check whether ECM ground circuit is normal.

No

Repair the faulty part.

Yes

Step 9

Replace ECM.

Next

Step 10

Use scan tool to confirm whether the DTC code is stored again.

(a)

Connect scan tool to the datalink connector.

(b)

Turn the ignition switch to "ON" position.

(c)

Clear DTC code.

(d)

Start and run the engine at idle speed to warm up the engine
for at least 5 min.

(e)

Road test the vehicle for at least 10 min.

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Control System JL4G18-D

Engine