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

Throttle Body Position Sensor 
Harness Connector EN27

1

2

3

FE02-5041b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect throttle position sensor wiring harness connector
EN27.

(c)

Disconnect ECM harness connector EN01.

(d)

Measure resistance between throttle position sensor wiring
harness connector EN27 terminal No.3 and ECM harness
connector terminal No.26. Check whether the circuit is open.
If there is no open circuit, repair the faulty part.

(e)

Measure resistance between throttle position sensor wiring
harness connector EN27 terminal No.3 and a reliable ground.
Check whether the circuit is short to ground. If there is no
short circuit, repair the faulty part.

(f)

Measure voltage between throttle position sensor wiring
harness connector EN27 terminal No.3 and a reliable ground.
Check whether the circuit is short to power supply. If there is
no short circuit, repair the faulty part.

Test Items

Standard Value

Resistance Between EN27 (3) and EN01 (26)

Less than 1 Ω

Resistance Between EN27 (3) and a Reliable
Ground

10 kΩ or higher

Voltage Between EN27 (3) and a Reliable
Ground

0 V

Normal

Go to step 9

Step 8

Check throttle position sensor ground circuit.

Engine

Control System JL4G18-D

2-107

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

Throttle Body Position Sensor 
Harness Connector EN27

1

2

3

FE02-5042b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect throttle position sensor wiring harness connector
EN27.

(c)

Disconnect ECM harness connector EN01.

(d)

Measure resistance between throttle position sensor wiring
harness connector EN27 terminal No.1 and ECM harness
connector terminal No.39. Check whether the circuit is open.
If there is no open circuit, repair the faulty part.

(e)

Measure voltage between throttle position sensor wiring
harness connector EN27 terminal No.1 and a reliable ground.
Check whether the circuit is short to power supply. If there is
no short circuit, repair the faulty part.

Test Items

Standard Value

Resistance Between EN27 (3) and EN01
(39)

Less than 1 Ω

Voltage Between EN27 (3) and a Reliable
Ground

0 V

Execute next step as per normal.

Next

Step 9

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 10

Replace ECM.

Next

Step 11

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)

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

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Control System JL4G18-D

Engine

Yes

Step 12

Diagnostic completed.

5. Repair Instructions:

Replace throttle position sensor. Refer to 

2.2.8.3

 

Throttle Position Sensor Replacement

.

2.2.7.21 DTC P0130 P0131 P0132 P0133 P0134 P2195 P2196

1. DTC Descriptor:

DTC

P0130

Pre-Catalytic Oxygen Sensor Signal Unreasonable

DTC

P0131

Pre-Catalytic Oxygen Sensor Circuit Voltage Too Low

DTC

P0132

Pre-Catalytic Oxygen Sensor Circuit Voltage Too High

DTC

P0133

Pre-Catalytic Oxygen Sensor Aging

DTC

P0134

Pre-Catalytic Oxygen Sensor Malfunction

DTC

P2195

Pre-Catalytic Oxygen Sensor Aging (Too Lean)

DTC

P2196

Pre-Catalytic Oxygen Sensor Aging (Too Rich)

After the vehicle is started, the control module works in the open-loop mode and ignores pre-catalytic oxygen sensor signal voltage
when calculating air-fuel ratio. The control module provides approximately 450mV reference voltage to the pre-catalytic oxygen
sensor. When the engine starts running, the pre-catalytic oxygen sensor will be heated and begin to generate a 0-0.1 V voltage.
This voltage fluctuates. Once the control module detects that the pre-catalytic oxygen sensor voltage exceeds a threshold voltage,
it will immediately enter into the closed-loop mode. Control module determines the Air-Fuel ratio using the received pre-catalytic
oxygen sensor voltage signal. If the pre-catalytic oxygen sensor voltage increases to over the reference voltage (tend to 1 V), it
indicates that the air fuel mixture is too rich. If the pre-catalytic oxygen sensor voltage decreases to below the reference voltage
(tend to 0 mV), it indicates that the air fuel mixture is too lean.
ECM  provides  a  signal  through  ECM  harness  connector  EN01  terminal  No.45  to  pre-catalytic  oxygen  sensor  wiring  harness
connector  EN02  terminal  No.4;  a  low  internal  reference  voltage  through  ECM  harness  connector  EN01  terminal  No.39  to  Pre-
Catalytic oxygen sensor wiring harness connector EN02 terminal No.3.

2. Conditions For Setting DTC and The Fault Location:

DTC

Code

DTC Detection Strategy

Conditions For Setting The DTC (Control Strategy)

Fault Locations

P0130

1. Pre-Catalytic Oxygen Sensor

Voltage Too Low In an Extended
Period of Time

2. Short to Ground When Cold

3. Pre-Catalytic Oxygen Sensor

Voltage Leakage

1. Pre-Catalytic oxygen sensor output voltage is

between 0.06-0.40 V.

2. Pre-Catalytic oxygen sensor output voltage is less

than 0.06 V.

3. Pre-Catalytic oxygen sensor output voltage is greater

than 0.611 V and less than 1.5 V and Post-Catalytic
oxygen sensor output voltage is 0.099 V.

1. Sensor Circuit

2. Sensor

3. ECM

Engine

Control System JL4G18-D

2-109

DTC

Code

DTC Detection Strategy

Conditions For Setting The DTC (Control Strategy)

Fault Locations

P0131
P0132

1. Pre-Catalytic Sensor Voltage

Too High

2. Pre-Catalytic Sensor Voltage

Too Low

1. Pre-Catalytic oxygen sensor output voltage is greater

than 1.5 V.

2. Pre-Catalytic oxygen sensor output voltage is less

than 0.06 V.

3. Battery voltage is greater than 10.98 V.

4. Engine speed is greater than 25 rpm.

5. Exhaust temperature is less than the upper limit 800°C

(1,472 ºF).

6. Exhaust is hot enough.

P0134

1. Signal circuit open.

2. Pre-Catalytic Oxygen Sensor

High Resistance At High
Temperature

1. Sensor voltage is between 0.401 V and 0.601 V.

2. Sensor resistance is greater than 20,000 Ω.

3. Oxygen sensor is hot enough, lasting for 100 s.

P0133
P2195
P2196

1. Post-Catalytic oxygen sensor

control integral value is over
maximum limit.

2. Post-Catalytic oxygen sensor

control integral value is lower
than minimum limit.

3. Filtered Pre-Catalytic oxygen

sensor signal is greater than
specified value.

1. Post-Catalytic oxygen sensor control integral value is

greater than 1.0 s.

2. Post-Catalytic oxygen sensor control integral value is

less than -1.0 s.

3. Diagnostic function is switched on.

4. Filtered pre-catalytic oxygen sensor signal cycle is

more than 3.3 s.

5. Effective cycle count value is greater than 20.

6. Target excess air coefficient is equal to 1.

7. No pressure sensor malfunction.

8. No coolant temperature sensor malfunction.

9. No intake air temperature sensor malfunction.

10. No diagnosis preventing conditions.

11. Speed is between 1,600 rpm and 2,600 rpm.

12. Load is between 25 and 50.

13. Exhaust temperature model value is greater than 500.

14. No pre-catalytic oxygen sensor malfunction.

15. No three-way catalytic converter malfunction.

1. Sensor Circuit

2. Sensor

3. Mixture Too

Rich

4. Mixture Too

Lean

5. ECM

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Control System JL4G18-D

Engine