Geely Emgrand X7. Manual part — 223

3. Circuit

figure

NL02-2146b

电子
油门
踏板

2 IP51

4 IP51

3 IP51

1 IP51

6 IP51

5 IP51

76 EN01

70 EN01 41 EN01 74 EN01

42 EN01

66 EN01

ECM

V5REF1

V5RTN1

V5B2

V5BRTN2

PPS1

PPS2

4. Diagnostic

Steps:

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.

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

pedal

Electronic accelerator harness

connectorIP51

891

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.

A. Turn the ignition switch to the

OFF position.

B. Disconnect APP sensor harness

connector IP51.

C.

Disconnect ECM harness
connector EN01.

D. Measure resistance between IP51

terminal No.4 and a reliable
ground.

E. Measure voltage between IP51

terminal No.4 and a reliable
ground.

NL02-2149b

6

5

4

3

2

1

IP51 电子油门踏板线束连接器

4

F. Test continuity between IP51

terminal No.4 and EN01 terminal
No.41.

NL02-2150b

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

41

Results

Test Items

Standard Value

Resistance Between IP51(4)and A Reliable 10 kΩ or higher

No

Go to step 5

Yes

IP51 electronic accelerator

pedalharness connector

EN01 engine control module harness

connector

892

Ground

Voltage Between IP51 (4) and A Reliable
Ground

0 V

Continuity Between IP51(4) and EM01(41)

Less than 1 Ω

Inspect whether according with the standard value?

4

Inspect APP sensor harness connector IP51terminal No.4 output voltage.

Inspect APP sensor #4 terminal output
voltage. Refer to 2.12.7.13
“Acceleration Pedal Position Sensor
(APP) Inspection” for the standard
values.

NL02-2149b

6

5

4

3

2

1

IP51 电子油门踏板线束连接器

4

5

Inspect APP sensor harness connector IP51 terminal No.2 and 3.

No

Refer to 2.2.8.4 “Replacement of
Acceleration Pedal” to replace the
APP sensor.

Yes

Go to step 7

No

Circuit fault, repair the faulty part.

Yes

IP51 electronic accelerator

pedalharness connector

893

A. Turn the ignition switch to the

OFF position.

B. Disconnect APP sensor harness

connector IP51.

C.

Disconnect ECM harness
connector EN01.

D. Turn the ignition switch to the

ON position.

E. Measure resistance between IP51

terminal No.2 and a reliable
ground.

F. Test continuity between IP51

terminal No.2 and EN01 terminal
No.70.

NL02-2151b

6

5

4

3

2

1

IP51 电子油门踏板线束连接器

2

3

G. Measure voltage between IP51

terminal No.3 and a reliable
ground.

H. Test continuity between IP51

terminal No.3 and EM01
terminal No.74.

NL02-2152b

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

74

70

Results

Test Items

Standard Value

Resistance Between IP51(2)and A Reliable
Ground

Lager than 10 kΩ

IP51(2)- EN01(70) continuity

Less than 1 Ω

Voltage Between IP51(3)and A Reliable
Ground

0 V

IP51(3)- EN01(74) continuity

Less than 1 Ω

Inspect whether according with the standard value?

IP51 electronic accelerator

pedalharness connector

EN01 engine control module harness

connector

894