Geely Emgrand X7. Manual part — 76

B. Rotated 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 exported.

4

Replace the electronic throttle body (ETC).

Refer to 2.6.8.5 Replacement of Electrical Throttle Body Assembly to replace the electrical
throttle body.

5

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

A. Connect fault diagnosis tester to the data link connector.

B. Rotated 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 exported.

6

Inspect ECM Power Supply Circuit and ground circuit.

A. Refer to 2.2.7.43 DTC P0562 P0563 to inspect ECM Power Supply Circuit and ground

circuit. ECM power and ground circuits normal?

7

Replace ECM. Refer to 2.2.8.1 Replacement of Engine Control Module.

8

Refer to 2.2.7.11 “Crankshaft Position Sensor (CKP) Learn” to carry out the
crankshaft position sensor learn.

9

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

Next

Next

No

Power and ground circuits fault.

Yes

No

Troubleshooting

Yes

Next

No

Troubleshooting

Yes

303

A. Connect fault diagnosis tester to the data link connector.

B. Rotated 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 10min.

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

10 Troubleshooting

No

Refer to 2.2.7.3 Intermittent Fault
Inspection for intermittent fault.

Yes

304

2.2.7.51 DTC P2122 P2123

1. DTC

description:

DTC P2122

Electronic Acceleration Pedal Position Sensor #1 Circuit Low Voltage

DTC P2123

Electronic Acceleration Pedal Position Sensor #1 Circuit High Voltage

In order to protect the security of the system, acceleration pedal position sensor (APP) uses a
dual-sensor setting, sliding resistive. APP sensor 1 output is IP51 terminal No.4, through ECM
wiring harness Connect EM01 terminal No.41 to ECM.

2. Conditions for Setting DTC and the Fault Location:

DTC Code

DTC Detection
Strategy

Set(Control Strategy) Conditions Fault

Locations

P2122

Hardware Circuit
Malfunction

1. APS1 signal terminal grounded

or open.

2. Input signal larger than 97.5%.

P2123

Hardware Circuit
Malfunction

1. APS1 signal terminal grounded

or open.

2. Input signal less than 3.5%

1. Acceleration

Pedal Position
Sensor

2. Acceleration

Pedal Position
Sensor Circuit

3. ECM

3. Circuit

figure

发

动
机

控
制

模

块

油门踏板位置传感器

70

EM01 V5REF1

2

41

EM01 PPS1

4

74

EM01 V5RTN1

3

66

EM01 V5REF2

1

42

EM01 PPS2

6

76

EM01 V5RTN2

5

NL02-0064c

4. Diagnostic

Steps:

Accelerator position sensor

Engi

ne

co

ntr

ol mo

dul

e

305

1

Inspect APP sensor harness connector IP51 terminal No.2 voltage.

A. Turn the ignition switch to the

OFF position.

B. Disconnect APP sensor harness

connector IP51.

C. Turn the ignition switch to the

ON position.

D. Measure voltage between IP51

terminal No.2 and a reliable
ground.

Standard Voltage: 4.8-5.2V

Does it conform to the standard value?

电子油门线束连接器

IP51

6

5

4

3

2

1

NL02-0030c

2

Inspect resistance between APP sensor harness connector IP51 terminal No.3 and
ground.

A. Turn the ignition switch to the OFF position.

B. Disconnect APP sensor harness connector IP51.

C. Turn the ignition switch to the ON position.

D. Measure resistance between IP51 terminal No.3 and a reliable ground.

Standard Resistance: Less than 3 Ω

Does it conform to the standard value?

3

Inspect APP sensor harness connector IP51 terminal No.4.

No

Go to step 5

Yes

No

If the voltage is higher than the Standard Value, the circuit
is short to power supply; if the voltage is lower than the
standard value, go to step 5.

Yes

Electronic accelerator harness

connectorIP51

306