EF01

EF18

1413 12 1110

5

1

2

3

4

6

7

8

9

J

L

K

I

G

D

C

B

E

F

A

86

86

30

87

85

86

86

87

87

87

30

30

30

85

85

85

2

2

3

3

5

5

1

1

1

2

5 3

1

2

5 3

86

87

30

1

1

2

5
3

2

5
3

85

EF01

EF21

EF18

EF25

EF20

EF29

EF06

EF02

EF30

EF17

EF19

EF23

EF22

EF26

EF24

EF08

EF27

EF28

EF05

EF07

EF16

EF04

EF03

EF15

EF12

EF10

EF1

1

EF09

EF13

EF14

EF32

EF31

FE02-5287b

(a)

Turn the ignition switch to "OFF" position.

(b)

Remove fuses EF01 and EF18.

(c)

Test continuity between the two fuses with a multimeter.

Conducted?

No

Check whether there is a short circuit.
Replace the fuse.

Yes

Step 2

Check ECM fuse IF12 in I/P fuse block.

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

FE02-5110b

(a)

Turn the ignition switch to "OFF" position.

(b)

Remove IF12 from I/P fuse block.

(c)

Test continuity between the two fuses with a multimeter.

Conducted?

No

Check whether there is a short circuit.
Replace the fuse.

Yes

Step 3

Check ECM power supply voltage.

1

17

33

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

ECM Harness Connector EO35

FE02-5288b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect ECM harness connector EN01.

(c)

Turn the ignition switch to "ON" position.

(d)

Measure voltage between ECM harness connector EO35
terminal No.1 and a reliable ground.

(e)

Measure voltage between ECM harness connector EO35
terminal No.3 and a reliable ground.

Standard Voltage: 11-14 V

Voltage normal?

No

Go to step 5

Engine

Control System JL4G15-D

2-755

Yes

Step 4

Check ECM grounding the circuit.

1

17

33

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

ECM Harness Connector EO35

FE02-5289b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect ECM harness connector EO35.

(c)

Measure resistance between ECM harness connector EO35
terminal No.73 of and a reliable ground.

Standard Resistance: Less than 1 Ω

Resistance normal?

No

ECM ground circuit malfunction. Repair the
faulty part.

Yes

Step 5

Check charging system.

(a)

Check the battery voltage.

Standard voltage: 11-14 V

(b)

Check voltage generator charging voltage.

Standard voltage: 11.5-14.5V

All normal?

No

Repair the faulty part.

Yes

Go to step 9

Step 6

Check fuse EF04 to ECM circuit.

2-756

Control System JL4G15-D

Engine

EF04

1

17

33

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

ECM Harness Connector EO35

1413 12 1110

5

1

2

3

4

6

7

8

9

J

L

K

I

G

D

C

B

E

F

A

86

86

30

87

85

86

86

87

87

87

30

30

30

85

85

85

2

2

3

3

5

5

1

1

1

2

5 3

1

2

5 3

86

87

30

1

1

2

5
3

2

5
3

85

EF01

EF21

EF18

EF25

EF20

EF29

EF06

EF02

EF30

EF17

EF19

EF23

EF22

EF26

EF24

EF08

EF27

EF28

EF05

EF07

EF16

EF04

EF03

EF15

EF12

EF10

EF1

1

EF09

EF13

EF14

EF32

EF31

FE02-5290b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect ECM harness connector EO35.

(c)

Test continuity between ECM harness connector EO35
terminal No.1 and fuse EF04.

(d)

Measure resistance between ECM harness connector EO35
terminal No.1 and a reliable ground.

Standard Value:

Test Items

Specified Value

Continuity Between EO35 (1) and EF04

Turn

Resistance Between EO35 (1) and A reliable
ground

10 kΩ or higher

Normal?

No

Circuit malfunction. repair or replace the
wiring harness.

Yes

Step 7

Check fuse IF12 to ECM circuit.

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

1

17

33

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

ECM Harness Connector EO35

FE02-5291b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect ECM harness connector EO35.

(c)

Test Continuity between ECM harness connector EO35 No.
3 terminal and fuse IF12.

(d)

Measure resistance between ECM harness connector EO35
terminal No.3 and a reliable ground.

Standard Value:

Test Items

Specified Value

Continuity Between EO35 (3) and IF12

Turn

Resistance Between EO35 (3) and A
reliable ground

10 kΩ or higher

All normal?

No

Circuit malfunction, repair or replace the
wiring harness.

Engine

Control System JL4G15-D

2-757

Yes

Step 8

Replace ECM.

(a)

Carry out crankshaft self learn after ECM replacement. Refer
to 

2.12.7.11

 

Crankshaft Position Sensor (CKP) Learn

.

Next

Step 9

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.

(f)

Read control system DTC code again to confirm that the
system has no DTC code.

No

Intermittent Fault. Refer to 

2.2.7.3

 

Intermittent

Fault Check

.

Yes

Step 10

Diagnostic completed.

2.12.7.44 DTC P0571

1. DTC Descriptor:

DTC

P0571

Brake Lamp Switch Status No Change During Braking

Disconnect the brake light switch signal. the vehicle braking, system enters the diagnostic window. After multiple braking, DTC code
appears. Engine running smooth, the vehicle can be driven.

2. Conditions For Setting DTC and The Fault Location:

DTC Code

DTC Detection Strategy

Conditions For Setting The DTC (Control

Strategy)

Fault Locations

P0571

ECM  receives  the  brake  light
switch signal.

1. Brake Light Switch Signal Disconnected.

2. Vehicle braking, system enters the

diagnostic window.

3. DTC codes appear after repeatedly braking.

1. Brake Light Switch Circuit

2. Brake Lights Switch

3. ECM

2-758

Control System JL4G15-D

Engine