Geely Emgrand X7. Manual part — 197

2.12.7.27 DTC P0222 P0223

1. DTC

description:

DTC P0222 Electronic Throttle Position Sensor #2 Circuit Low Voltage

DTC P0223 Electronic Throttle Position Sensor #2 Circuit High Voltage

TPS2 sensor sends signal through ECT harness connector EN27 terminal C to ECM through ECM
harness connector EN01 terminal No.27. If the TPS2 sensor signal is lost, but ECM is able to
receive the normal TPS1 sensor signal, then ECM controls the engine to enter reliability of
determining the driver's intention decline or no high power output mode. Engine's responding to
the pedal changes becomes slow and engine power output will be significantly weaker, although
the vehicle can still be able to drive 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

P0222

Hardware
Circuit
Malfunction

TPS signal end short to ground or
open, the input signal is less than
3.5%, DTC code set.

P0223

Hardware
Circuit
Malfunction

TPS signal end short to power supply,
input signal is greater than 96.5%,
DTC code set.

1. Electronic

Throttle Body

2. Electronic

Throttle Circuit

3. ECM

3. Circuit

sketch

Refer to 2.12.7.21 DTC P0122 P0123

4. Diagnostic

Steps:

Note: Before carrying out this diagnosis step, observe the data list on fault diagnosis tester and
analyze the accuracy of the data, as these will help with quick diagnosis.

Step 1

Inspect for DTC code P0641,P0651,P0122,P0123

(a) Connect fault diagnosis tester to the vehicle diagnostic interface.

(b) Turn ignition switch to ON position.

(c) Press the fault diagnosis tester power button.

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

(e) Read DTC codes.

Results

DTC Codes Shown

To Step

Only have P0222、P0223 Yes

787

oil P0222、P0223、P0641、P0651 No

Step 2

Check EN27 No . C terminal .

(a) Rotated ignition switch to OFF

position .

(b)

Disconnect ETC harness
connector EN27.

(c)

Disconnect ECM harness
connector EN01.

(d) Measure resistance between

EN27 terminal C and a reliable
ground.

(e) Measure voltage between EN27

terminal C and a reliable ground.

(f) Test continuity between EN27

terminal C and EN01 terminal
No.27.

NL02-2072b

D

H

G

F

E

A

B

C

EN27 节气门位置传感器线束连接器

C

NL02-2073b

EN01 发动机控制模块线束连接器

1

2

4

5

3

81

63

44

25

6

62

43

24 23 22 21 20 19 18 17 16 15 14 13 12 11 10

9

8

7

26

42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27

45

46

61 60 59 58

57 56 55

54 53 52 51 50 49 48 47

64

65

66

80 79 78 77 76 75 74 73 72 71 70 69 68 67

27

Results

Test Items

Standard Value

EN27(C)-reliable grounding resistance value

10 kΩ or higher

EN27(C)-Reliable grounding voltage value

0V

No

Refer to 2.12.7.46 DTC P0641 P0651

Yes

EN27 throttle position sensor harness

connector

EN01 engine control module harness

connector

788

EN27(C)-EN01(27)Continuity Less

than

1

Ω

Does it conform to the standard value?

Step 3

Inspect terminal C voltage output signal.

(a) Connect to ETC harness connector EN27.

(b) Connect ECM harness connector EN01.

(c) Measure ETC harness connector EM27 terminal C output voltage.

Standard Value: Refer to 2.12.7.12 Electronic Throttle Body (ETC) Inspection.

Is the output voltage value accorded with the standard value?

Step 4

Inspect ECM Power Supply Circuit and ground circuit.

Step 5

Replace ECM. Refer to 2.12.8.1 Replacement of Engine Control Module.

Step 6

Carry out the crankshaft position sensor learning, refer to 2.12.7.11 “Crankshaft
Position Sensor (CKP) Learning.

Step 7

Use fault diagnosis tester to confirm if DTC is stored again .

(a) Connect the fault diagnosis tester to the diagnostic interface.

(b) Turn 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) test the vehicle on the road for at least 10 min.

Next

Next

No

Power and ground circuits fault.

Yes

No

Circuit malfunction, repair circuit.

Yes

No

Circuit malfunction, repair circuit.

Yes

789

(f) Read control system DTC code again.

Verify that the system has no DTC code output.

Step 8

Troubleshooting

5. Maintenance

guide

:

Electronic throttle body (ETC) can only be replaced as an assembly. Do not disassemble it and
repair. Refer to 2.6.8.5 Replacement of Electronic Throttle Body for the replacement of ETC.

No

Refer to 2.2.7.3 Intermittent Fault
Inspection for intermittent fault.

Yes

790