No

Intermittent Fault. Refer to 

2.2.7.3

 

Intermittent

Fault Check

Yes

Step 10

Diagnostic completed.

5. Repair Instructions:

Replace the engine coolant temperature sensor. Refer to 

2.2.8.6

 

Engine Coolant Temperature Sensor Replacement

.

2.12.7.21 DTC P0122 P0123

1. DTC Descriptor:

DTC

P0122

Electronic Throttle Position Sensor 1 Circuit Low Voltage

DTC

P0123

Electronic Throttle Position Sensor 1 Circuit High Voltage

TPS1 sensor sends signal through ECT harness connector EO27 terminal B to ECM through ECM harness connector EO01 terminal
No.39. If the TPS1 sensor signal is lost, but ECM is able to receive the normal TPS2 sensor signal, then ECM controls the engine
enter "reliability of determining the driver's intention decline or no high power output mode". Engine responds to the pedal changes
slow and engine power output will be significantly weaker, although the vehicle can still be able to driving in normal traffic.

2. Conditions For Setting DTC and The Fault Location:

DTC Code

DTC Detection

Strategy

Conditions For Setting The DTC (Control Strategy)

Fault Locations

P0122

Hardware Circuit
Malfunction

TPS signal is short to ground or open, the input signal is less
than 8%, DTC code set.

1. Electronic Throttle

Body

2. Electronic Throttle

Circuit

3. ECM

P0123

Hardware Circuit
Malfunction

TPS signal is short to power supply, input signal is greater than
92.7%, DTC code set.

Engine

Control System JL4G15-D

2-667

3. Schematic:

Electronic Throttle Body 

Engine 

Control 

Module

FE02-5209b

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

check for DTC code P0641, P0651, P0222, P0223.

(a)

Connect scan tool to the datalink connector.

(b)

Turn the ignition switch to "ON" position.

(c)

Press the scan tool power button.

(d)

Select the following menu items: Engine/Read DTC codes.

(e)

Read DTC codes.

Results:

DTC Codes Shown

To Step

P0122, P0123

Yes

P0222, P0223, P0641, P0651

No

No

Refer to 

2.12.7.46

 

DTC P0641 P0651

2-668

Control System JL4G15-D

Engine

Yes

Step 2

Check EO27 terminal B.

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

A

B

C

D

E

F

G

H

ECM Harness Connector EO01

Electronic Throttle Body Harness Connector EO27

FE02-5236b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect ETC harness connector EO27.

(c)

Disconnect ECM harness connector EO01.

(d)

Measure resistance between EO27 terminal B and a reliable
ground.

(e)

Measure voltage between EO27 terminal B and a reliable
ground.

(f)

Test continuity between EO27 terminal B and EO01 terminal
No.39.

Results:

Test Items

Standard Value

Resistance Between EO27 (B) and A Reliable
Ground

10 kΩ or higher

Voltage Between EO27 (B) and A Reliable
Ground

0 V

EO27 (B) and EO01 (39) Continuity

Less than 1 Ω

Is the value specified value?

No

Circuit malfunction, repair the circuit.

Yes

Step 3

Check terminal B voltage output signal.

(a)

Connect ETC harness connector EO27.

(b)

Connect ECM harness connector EO01.

(c)

Measure ETC harness connector EO27 terminal B output
voltage.
Standard Value: Refer to 

2.12.7.12

 

Electronic Throttle Body

(ETC) Check

.

Is the output voltage value specified value?

No

Replace the electronic throttle body (ETC).
Refer to 

2.16.3.2

 

Electronic Throttle Body

Replacement

.

Yes

Step 4

Check ECM power supply circuit and ground circuit.

(a)

Check ECM Power Supply Circuit and ground circuit. Refer to

2.12.7.43

 

DTC P0562 P0563

.

ECM power and ground circuits normal?

No

Repair power and ground fault circuits.

Engine

Control System JL4G15-D

2-669

Yes

Step 5

Replace ECM.

(a)

Replace ECM. Refer to 

2.2.8.8

 

Engine Control Module

Replacement

.

(b)

Carry out crankshaft position sensor self learn. Refer to

2.12.7.11

 

Crankshaft Position Sensor (CKP) Learn

.

Next

Step 6

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

Yes

Step 7

Diagnostic completed.

5. Repair Instructions:

Electronic throttle body (ETC) can only be replaced as an assembly. Do not disassemble it and repair. Refer to 

2.16.3.2

 

Electronic

Throttle Body Replacement

replacement.

2.12.7.22 DTC P0131 P0132 P0133 P0134

1. DTC Descriptor:

DTC

P0131

Pre-Catalytic Oxygen Sensor Circuit Short To Low Voltage

DTC

P0132

Pre-Catalytic Oxygen Sensor Circuit Short To High Voltage

DTC

P0133

Pre-Catalytic Oxygen Sensor Slow Response

DTC

P0134

Pre-Catalytic Oxygen Sensor Circuit Open

2-670

Control System JL4G15-D

Engine