Geely Emgrand X7. Manual part — 199

No.B and a reliable ground.

(f) Install the engine main relay.

(g) Connect cylinder No.1 fuel

injector harness connector EN11.

Exclude the fuel injector power supply
circuit fault.

ER03

85

86

87

30

30

87

86

85

ER05

30

87

86

85

ER06

30

87

87a

86

85

ER11

ER08

ER0

9

85

86

87

30

ER10

2

1

5

3

2

1

5

3

2

1

5

3

ER04

ER02

2

1

5

3

2

1

5

3

ER01

ER07

2

1

5

3

1

2

3

4

11

12

13

14

15

16

5

6

7

8

9

10

EF0

8

EF0

7

EF2

7

EF2

6

EF2

2

EF2

9

EF0

3

EF0

6

EF0

9

EF2

5

EF1

7

EF1

6

EF1

5

EF3

5

EF2

1

EF

1

4

EF

0

1

EF

0

2

EF

0

4

EF

1

0

EF

1

1

EF

1

8

EF

2

4

NL02-0045c

Test Items

Standard Value

EN11(b) and main relay No,30 terminal

Less than 1 Ω

EN11(b) and reliable grounding

10 kΩ or higher

Step 6

Inspect the Cylinder #1 fuel injector control circuit.

(a) Rotated ignition switch to OFF

position .

(b) Disconnect cylinder No.1 fuel

injector harness connector EN11.

(c)

Disconnect ECM harness
connector EN01.

(d) Measure resistance between

cylinder No.1 fuel injector wiring
harness connector EN01 terminal
No.A and ECM harness
connector terminal No.6. Inspect
whether the circuit is open. If
there is no open circuit, repair the
faulty part.

NL02-2079b

A

B

EN11 1缸燃油喷射器线束连接器

B

Go to step 9

Next

EN11 1st cylinderfuel injector harness

connector

795

(e) Measure resistance between

cylinder No.1 fuel injector wiring
harness connector EN11 terminal
No.A and a reliable ground.
Inspect whether the circuit is
short to ground. Otherwise,
repair the faulty part.

(f)

Measure voltage between
cylinder No.1 fuel injector
harness connector EN11 terminal
No.A and a reliable ground.
Inspect whether the circuit is
short to power supply. Otherwise,
repair the faulty part.

NL02-2080b

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

6

Test Items

Standard Value

EN11(A)-EN01(6)Resistance value

Less than 1 Ω

EN11(A)-reliable grounding resistance value

10 kΩ or higher

EN11(A)-Reliable grounding voltage value

0V

Execute next step as per normal.

Step 7

Inspect the ECM Power Supply Circuits.

(a) Inspect whether ECM power supply circuit is normal.

(b) Inspect whether ECM ground circuit is normal.

Step 8

Replace ECM

Refer to 2.12.7.11 Crankshaft Position Sensor (CKP) Learn to carry out the crankshaft position
sensor learn after replacing the ECM.

Step 9

Use a fault diagnosis tester to confirm whether the DTC Code is stored again.

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

Next

No

Repair the faulty part.

Yes

Next

EN01 engine control module harness

connector

796

(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) Road test the vehicle for at least 10 min.

(f) Read control system DTC code again to confirm that the system has no DTC code.

Step 10

Troubleshooting

5. Maintenance

guide

:

Refer to 2.3.8.5 “Replacement of Fuel Injectors” to replace the fuel injectors

No

Refer to 2.12.7.3 Intermittent Fault
Inspection for intermittent fault.

Yes

797

2.12.7.30 DTC P0264 P0265

1. DTC

description:

DTC P0264

Cylinder No.2 Fuel Injector Circuit Low Voltage Fault

DTC P0265

Cylinder No.2 Fuel Injector Circuit High Voltage Fault

Fuel injectors operating voltage is provided by The Main Relay controlled by ECM. Battery
voltage passes through the main relay terminal No.3 to all fuel injector wiring harness connectors
terminal No.A. ECM controls fuel injector ground circuit by ECM harness connector EN01
terminal No.8. ECM monitors all fuel injector driver circuits status, if ECM detects driving circuit
status corresponding voltage is incorrect, ECM will set a fuel injector control circuit fault DTC
code.

2. Conditions For Setting DTC and The Fault Location:

DTC Code

DTC Detection
Strategy

Conditions For Setting The DTC
(Control Strategy)

Fault Locations

P0264

Hardware
Circuit
Inspection

Injector Signal Circuit Open or
Short To Ground

P0265

Hardware
Circuit
Inspection

Injector Signal Circuit Short To
Power Supply

1. Sensor

Circuit

2. Sensor

3. ECM.

3. Circuit

sketch

NL02-2081b

44

EN01

ECM

BAT

15

A

E

F2

1

MPR

86

87

30

85

发动机主继电器

8

EN01

A

EN12

B

EN12

INJD

2缸燃油喷射器

Engine main
relay

2nd cylinderfuel

injector

798