3. Schematic:

CPS HI

CPS LO

21

20

EO01

EO01

A

B

B

A

C

EO01

EO01

EO01

18

56

23

V5RTN2

CAM1

V5REF2

Crankshaft Position Sensor

Camshaft Position Sensor

Engine 

Control 

Module

FE02-5297b

4. Diagnostic Steps:

Note

Before carrying out this diagnosis step, observe the data list on scan tool and analyze the accuracy of the data, as
these will help with quick diagnosis.

Step 1

Initial Inspection

(a)

Check the sensor wiring harness connector EN26 whether
there is loose or poor connection and so on.

(b)

Check whether the sensor is installed correctly.

(c)

Check whether the sensor gap is normal.

No

Repair the faulty part. Go to step 10

Yes

Step 2

Read the engine data (engine speed) on the scan tool.

(a)

Connect scan tool to datalink connector.

(b)

Turn the ignition switch to "ON" position.

(c)

Select "Engine"/"Reading Data"/"Engine Speed."

(d)

Start the engine.

(e)

With the engine running, read the engine data on the scan
tool

Engine

Control System JL4G15-D

2-727

Standard Value: Normal data. Refer to 

2.12.7.9

 

Data Stream List

.

(f)

If the engine does not start, check the data with the engine
running.

(g)

If the engine speed is shown as "0", it indicates the circuit
between the crankshaft position sensor and ECM wiring
harness open or short.

Yes

Go to step 4

No

Step 3

Intermittent Fault. Refer to 

2.12.7.4

 

Symptoms Table

.

Step 4

Check the crankshaft position sensor.

C

B

A

Crankshaft Position Sensor

FE02-5278b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect the crankshaft position sensor wiring harness
connector EO26.

(c)

Measure crankshaft position sensor resistance.

Standard Resistance: 504-616 Ω at 25°C(77 ºF)

(d)

Connect the crankshaft position sensor wiring harness
connector EN26.

Is resistance normal?

No

Replace the crankshaft position sensor. Refer
to 

2.10.8.2

 

Crankshaft Position Sensor

Replacement

.

Yes

Step 5

Check sensor terminal No.A circuit.

2-728

Control System JL4G15-D

Engine

21

A

B

C

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

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

Crankshaft Position Sensor Harness 
Connector EO26

ECM Harness Connector EO01

FE02-5279b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect the crankshaft position sensor wiring harness
connector EO26.

(c)

Disconnect ECM harness connector EO01.

(d)

Measure resistance between crankshaft position sensor
wiring harness connector EN26 terminal A and ECM harness
connector EN01 terminal No.21. Check whether the circuit is
open.

(e)

Measure resistance between crankshaft position sensor
wiring harness connector EN26 terminal A and a reliable
ground. Check whether the circuit is short to ground.

(f)

Measure resistance between crankshaft position sensor
wiring harness connector EN26 terminal A and power supply.
Check whether the circuit is short to power supply.

Test Items

Standard Value

Resistance Between EN26 (A) and EN01 (21)

Less than 1 Ω

Resistance Between EN26 (A) and A Reliable
Ground

10 kΩ or higher

Voltage Between EN26 (A) and A Reliable
Ground

0 V

Are the values specified values?

No

Repair the faulty part. Go to step 10

Yes

Step 6

Check sensor terminal B circuit.

Engine

Control System JL4G15-D

2-729

Crankshaft Position Sensor Harness 
Connector EO26

ECM Harness Connector EO01

B

21

A

C

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

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

FE02-5280b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect the crankshaft position sensor wiring harness
connector EO26.

(c)

Disconnect ECM harness connector EO01.

(d)

Measure resistance between crankshaft position sensor
wiring harness connector EN26 terminal B and ECM harness
connector EN01 terminal No.20. Check whether the circuit is
open.

(e)

Measure resistance between crankshaft position sensor
wiring harness connector EN26 terminal B and a reliable
ground. Check whether the circuit is short to ground.

(f)

Measure resistance between crankshaft position sensor
wiring harness connector EN26 terminal B and power supply.
Check whether the circuit is short to power supply.

Test Items

Standard Value

Resistance Between EN26 (B) and
EN01 (20)

Less than 1 Ω

Resistance Between EN26 (B) and A
Reliable Ground

10 kΩ or higher

Voltage Between EN26 (B) and A
Reliable Ground

0 V

Are the values the specified values?

No

Repair the faulty part. Go to step 10

Yes

Step 7

Check sensor signal plate.

(a)

Check whether the sensor signal plate is damaged, missing
and so on.

(b)

Check whether the sensor signal plate is installed correctly.

No

Repair the faulty part. 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.

(a)

Carry out crankshaft self learn after ECM replacement. Refer
to 

2.12.7.11

 

Crankshaft Position Sensor (CKP) Learn

.

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Control System JL4G15-D

Engine